Journal articles on the topic 'Intervalles temporels flous'

We consider oscillatory flows between concentric co-rotating cylinders at angular velocity Ω(t) = Ωm + Ωo cos ωt as a prototype to investigate the competing effects of centrifugal and Coriolis forces on the flow stability. We first study by flow visualization the effect of the mean rotation Ωm on the centrifugal destabilization due to the temporal modulation. We show that increasing the mean rotation first destabilizes and then restabilizes the flow. The instability of the purely azimuthal basic flow is then analysed by investigating the dynamics of the axial velocity component of the vortex structures. Velocity measurements performed in the rotating frame of the cylinders using ultrasound Doppler velocimetry show that secondary flow appears and disappears several times during a flow period. Based on a finite-gap expression for the basic flow, linear stability analysis is performed with a quasi-steady approach, providing the times of appearance and disappearance of secondary flow in a cycle as well as the effect on the instability threshold of the mean rotation. The theoretical and numerical results are in agreement with experimental results up to intermediate values of the frequency. Notably, the flow periodically undergoes restabilization at particular time intervals.

Abstract. The aim of this study is to investigate the relative contributions of dayside and nightside processes to the spatial and temporal structure of polar cap plasma convection. The central parameter is the cross-polar cap potential (CPCP). Selecting a 10-h-long interval of stable interplanetary driving by an interplanetary CME (ICME), we are able to distinguish between the dayside and nightside sources of the convection. The event was initiated by an abrupt enhancement of the magnetopause (MP) reconnection rate triggered by a southward turning of the ICME magnetic field. This was followed by a long interval (10 h) of steady and strong driving. Under the latter condition a long series of electrojet intensifications was observed which recurred at 50 min intervals. The detailed temporal structure of polar cap convection in relation to polar cap contraction events is obtained by combining continuous ground observations of convection-related magnetic deflections (including polar cap magnetic indices in the Northern and Southern Hemispheres, PCN and PCS) and the more direct, but lower-resolution ion drift data obtained from a satellite (DMSP F13) in polar orbit. The observed PCN enhancements combined with DMSP satellite observations (F13 and F15 data) of polar cap contractions during the evolution of selected substorm expansions allowed us to estimate the CPCP enhancements (25%) associated with individual events in the series. Ground-satellite conjunctions are further used to investigate the spatial structure of polar cap convection, i.e., the homogeneous plasma flow in the centre (Vi ≤ 1 km s−1) versus channels of enhanced antisunward flows (Vi ≥ 1 km s−1) along the periphery of the polar cap. We emphasise the temporal structure of these polar cap flow phenomena in relation to the prevailing solar wind forcing and the repetitive substorm activity.

AbstractArgo float trajectories are simulated in the southwest Pacific basin (25°–45°S, 170°E–165°W) using velocity fields from a 1/12° Southern Ocean model and a Lagrangian particle tracking model programmed to represent the vertical motions of profiling Argo floats. The system is applied to simulate both core Argo floats (typically parked at 1000-m depth and profiling to 2000-m depth) and Deep Argo floats (parked 500 m above the seafloor). The goal is to estimate probability density functions (PDFs) predicting future float positions. Differences are expected in the trajectory statistics, largely because of limitations in the temporal and spatial resolution of the model fields and uncertainties associated with a random walk component included in the particle advection scheme to represent this unresolved variability. Nonetheless, the core Argo float displacements over ~100-day time intervals are mostly consistent with the derived PDFs, particularly in regions with stable midlayer flows. For the Deep Argo floats, which are released into the open ocean and parked near the bottom, the simulations predict an average total displacement of less than 50 km within 100 days, in good agreement with the Deep Argo floats deployed as part of a pilot study. The study explores both the representativeness and the predictability of float displacements, with an aim to contribute to planning for the float observing system.

The nonlinear stability of a two-fluid system consisting of a viscous film bounded above by a heavier and thicker layer, between two horizontal plates, with one of the plates oscillating horizontally about a fixed position, is investigated. An evolution equation governing the thickness of the viscous film is derived. Numerical simulations of this equation on extended spatial intervals demonstrate nonlinear small-amplitude saturation of the Rayleigh–Taylor instability in certain parametric regimes. In the low-frequency time-asymptotic regimes, the averaged properties of the extensive spatio-temporal chaos are not steady, but rather oscillate in time. A quasi-equilibrium theory is proposed in which the low-frequency results are interpreted by building upon the notions developed earlier for the simpler case of a non-oscillatory film governed by the classical, constant-coefficient Kuramoto–Sivashinsky equation. In contrast, the higher-frequency solutions exhibit piecewise linear profiles that have never been encountered in simulations of non-oscillatory films. The amplitude as a function of frequency has a single minimum point which is of order one. Also, preliminary results of numerical simulations of film evolution are given for the large-amplitude parametric regimes. At some parameter values, rupture is observed, similar to the case with no base flow; in other regimes the basic flows succeeds in preventing rupture. The complete characterization of the factors responsible for the particular asymptotic fate of the film, rupture or no rupture, remains an open question.

A nonhydrostatic, regional climate limited-area model (LAM) was used to analyze lateral boundary condition (LBC) errors and their influence on the uncertainties of regional models. Simulations using the fully compressible nonhydrostatic LAM (D-NICAM) were compared against the corresponding global quasi-uniform-grid Nonhydrostatic Icosahedral Atmospheric Model (NICAM) and a stretched-grid counterpart (S-NICAM). By this approach of sharing the same dynamical core and physical schemes, possible causes of model bias and LBC errors are isolated. The simulations were performed for a 395-day period from March 2011 through March 2012 with horizontal grid intervals of 14, 28, and 56 km in the region of interest. The resulting temporal mean statistics of the temperatures at 500 hPa were generally well correlated between the global and regional simulations, indicating that LBC errors had a minor impact on the large-scale flows. However, the time-varying statistics of the surface precipitation showed that the LBC errors lead to the unpredictability of convective precipitation, which affected the mean statistics of the precipitation distributions but induced only minor influences on the large-scale systems. Specifically, extratropical cyclones and orographic precipitation are not severely affected. It was concluded that the errors of the precipitation distribution are not due to the difference of the model configurations but rather to the uncertainty of the system itself. This study suggests that applications of ensemble runs, internal nudging, or simulations with longer time scales are needed to obtain more statistically significant results of the precipitation distribution in regional climate models.

When passengers are oversaturated in the urban rail transit system and a further increase of train frequency is impossible, passenger flow control strategy is an indispensable approach to avoid congestion and ensure safety. To make the best use of train capacity and reduce the passenger waiting time, coordinative flow control is necessary at each station on a line. In most published studies, the equilibrium of passenger distributions among different stations and periods is not considered. As a result, two issues occur making it hard to implement in practical. First, a large number of passengers are held up outside a small number of stations for very long time. Second, there is a large variation of controlled flows for successive time intervals. To alleviate this problem, a single-line equilibrium passenger flow control model is constructed, which minimizes the total passenger delay. By applying different forms of the delay penalty function (constant and linear), flow control strategies such as independent flow control and equilibrium flow control can be reproduced. An improved simulated annealing algorithm is proposed to solve the model. A numerical case is studied to analyze the sensitivity of the functions, and the best parameter relationship in different functions could be confirmed. A real-world case from Batong Line corridor in Beijing subway is used to test the applicability of the model and algorithm, and the result shows that the solution with linear delay penalty functions can not only reduce the total passenger delay but also equilibrate the number of flow control passengers on spatial and temporal.

The new plant for the treatment of water from the Wahnbach-reservoir went into operation at Siegburg, Germany in 2001. It will have a capacity of 3,600 to 4,800 m3/h and is intended for drinking water supply of the Bonn region. The relatively simple water treatment process achieves its high performance and safety from the sophisticated process layout and control developed from 40 years of research and experience at the Wahnbach Reservoir Association. According to temporal needs permanganate and/or powdered activated carbon can be applied for pretreatment. Flocculation is either possible with Al3+- or Fe3+-salt solutions introduced by optimized flash-mixing and destabilization. Immediately afterwards at the inlet into the 12 aggregation and filtration trains it is possible to inactivate motile planktonic organisms by means of cavitation fields generated by ultrasound at 40 kHz. In the following aggregation step flocs are generated tailored to optimum retention in the double media filters which are regenerated via high speed build-up backwashing. Release of plankton and microorganisms accumulated in the filter bed by motile plankton is inhibited by the ultrasound treatment. A continuously high filtrate quality is achieved by stacked filter-runs of the 12 filters adapted to the water quality with backwashes graded at equal time intervals after identical filter-run times, a filter to waste period after backwash first filtrate separation and permanent turbidity monitoring at the individual filtrate outlets. Disinfection is achieved with 3 closed UV-systems equipped, performance tested and certified according to the DVGW technical standard W 294 and is followed by conventional. de-acidification with addition of lime water. The paper will describe and explain the process concept which has been worked out and validated by WTV within the framework of several research projects.

Seismic acquisition is a trade-off between economy and quality. In conventional acquisition the time intervals between successive records are large enough to avoid interference in time. To obtain an efficient survey, the spatial source sampling is therefore often (too) large. However, in blending, or simultaneous acquisition, temporal overlap between shot records is allowed. This additional degree of freedom in survey design significantly improves the quality or the economics or both. Deblending is the procedure of recovering the data as if they were acquired in the conventional, unblended way. A simple least-squares procedure, however, does not remove the interference due to other sources, or blending noise. Fortunately, the character of this noise is different in different domains, e.g., it is coherent in the common source domain, but incoherent in the common receiver domain. This property is used to obtain a considerable improvement. We propose to estimate the blending noise and subtract it from the blended data. The estimate does not need to be perfect because our procedure is iterative. Starting with the least-squares deblended data, the estimate of the blending noise is obtained via the following steps: sort the data to a domain where the blending noise is incoherent; apply a noise suppression filter; apply a threshold to remove the remaining noise, ending up with (part of) the signal; compute an estimate of the blending noise from this signal. At each iteration, the threshold can be lowered and more of the signal is recovered. Promising results were obtained with a simple implementation of this method for both impulsive and vibratory sources. Undoubtedly, in the future algorithms will be developed for the direct processing of blended data. However, currently a high-quality deblending procedure is an important step allowing the application of contemporary processing flows.

Delivery of neurotransmitter produces on a synapse a current that flows through the membrane and gets transmitted into the soma of the neuron, where it is integrated. The decay time of the current depends on the synaptic receptor's type and ranges from a few (e.g., AMPA receptors) to a few hundred milliseconds (e.g., NMDA receptors). The role of the variety of synaptic timescales, several of them coexisting in the same neuron, is at present not understood. A prime question to answer is which is the effect of temporal filtering at different timescales of the incoming spike trains on the neuron's response. Here, based on our previous work on linear synaptic filtering, we build a general theory for the stationary firing response of integrate-and-fire (IF) neurons receiving stochastic inputs filtered by one, two, or multiple synaptic channels, each characterized by an arbitrary timescale. The formalism applies to arbitrary IF model neurons and arbitrary forms of input noise (i.e., not required to be gaussian or to have small amplitude), as well as to any form of synaptic filtering (linear or nonlinear). The theory determines with exact analytical expressions the firing rate of an IF neuron for long synaptic time constants using the adiabatic approach. The correlated spiking (cross-correlations function) of two neurons receiving common as well as independent sources of noise is also described. The theory is illustrated using leaky, quadratic, and noise-thresholded IF neurons. Although the adiabatic approach is exact when at least one of the synaptic timescales is long, it provides a good prediction of the firing rate even when the timescales of the synapses are comparable to that of the leak of the neuron; it is not required that the synaptic time constants are longer than the mean interspike intervals or that the noise has small variance. The distribution of the potential for general IF neurons is also characterized. Our results provide powerful analytical tools that can allow a quantitative description of the dynamics of neuronal networks with realistic synaptic dynamics.

Abstract. In 2015 large parts of Europe were affected by drought. In this paper, we analyze the hydrological footprint (dynamic development over space and time) of the drought of 2015 in terms of both severity (magnitude) and spatial extent and compare it to the extreme drought of 2003. Analyses are based on a range of low flow and hydrological drought indices derived for about 800 streamflow records across Europe, collected in a community effort based on a common protocol. We compare the hydrological footprints of both events with the meteorological footprints, in order to learn from similarities and differences of both perspectives and to draw conclusions for drought management. The region affected by hydrological drought in 2015 differed somewhat from the drought of 2003, with its center located more towards eastern Europe. In terms of low flow magnitude, a region surrounding the Czech Republic was the most affected, with summer low flows that exhibited return intervals of 100 years and more. In terms of deficit volumes, the geographical center of the event was in southern Germany, where the drought lasted a particularly long time. A detailed spatial and temporal assessment of the 2015 event showed that the particular behavior in these regions was partly a result of diverging wetness preconditions in the studied catchments. Extreme droughts emerged where preconditions were particularly dry. In regions with wet preconditions, low flow events developed later and tended to be less severe. For both the 2003 and 2015 events, the onset of the hydrological drought was well correlated with the lowest flow recorded during the event (low flow magnitude), pointing towards a potential for early warning of the severity of streamflow drought. Time series of monthly drought indices (both streamflow- and climate-based indices) showed that meteorological and hydrological events developed differently in space and time, both in terms of extent and severity (magnitude). These results emphasize that drought is a hazard which leaves different footprints on the various components of the water cycle at different spatial and temporal scales. The difference in the dynamic development of meteorological and hydrological drought also implies that impacts on various water-use sectors and river ecology cannot be informed by climate indices alone. Thus, an assessment of drought impacts on water resources requires hydrological data in addition to drought indices based solely on climate data. The transboundary scale of the event also suggests that additional efforts need to be undertaken to make timely pan-European hydrological assessments more operational in the future.

Abstract. We document the detailed spatio-temporal structure of the dayside aurora during intervals of ongoing dayside magnetopause reconnection, primarily during interplanetary magnetic field (IMF) Bz≤0 conditions. The present study is based on ground auroral observations in combination with particle precipitation data from a DMSP spacecraft. We describe auroral forms corresponding to the following particle precipitation regimes identified by Newell and Meng (1994): (i) central plasma sheet (CPS), (ii) precipitation void, (iii) dayside boundary plasma sheet (BPS), and (iv) cusp (LLBL/cusp/mantle). Two distinctly different auroral configurations are observed, corresponding to different regimes of the IMF clock angle (θ) and the ∣By∣/∣Bz∣ ratio. Two regimes are defined. In regime (I) θ lies within ∼ 90–135° and ∣By∣/∣Bz∣>1 (By-dominated), while in regime (II) θ is in the range 135°–180° and ∣By∣/∣Bz∣<1 (Bz-dominated). Within regime (I) the auroral response to reconnection events typically progresses from lower to higher latitudes in stages as indicated below: (A) equatorward boundary intensifications (EBIs): sequential brightenings of closely spaced, fragmented, rayed bands (BPS aurora) within the ∼08:00–15:00 MLT sector, each of which are moving noonward/sunward, (B) poleward moving auroral forms (PMAFs): forms expanding westward from the postnoon side (By>0) and later appearing as a poleward expanding form in the convection throat in the ∼09:00–12:00 MLT sector, with a fading phase in the regime of mantle precipitation. During strongly southward IMF conditions (regime II), the intense PMAF activity is replaced by a more latitudinally restricted, but longitudinally wide aurora of moderate intensity. The latter auroral state is accompanied by a 2-cell convection pattern which is rather symmetrical about noon. This state is very different from the convection/FAC configuration present during IMF regime (I), with its strong zonal flows (convection current), more intense FAC sheets and PMAF activity in the midday sector. The strong IMF regulation of the dayside BPS aurora, consisting of keV electrons, and its location with respect to the green line auroral gap (precipitation void), indicate that it is an important signature of the reconnection process, located on open boundary layer field lines. The observed longitudinal bifurcation of the auroral brightenings (EBIs) preceding PMAFs is consistent with antiparallel magnetopause reconnection. Key words. Magnetospheric physics (auroral phenomena magnetopause, cusp, and boundary layers: solar windmagnetosphere interactions) – Ionosphere (particle precipitation)

Abstract This paper presents a method which allows for a reduced portion of a particle image velocimetry (PIV) image to be analysed, without introducing numerical artefacts near the edges of the reduced region. Based on confidence intervals of statistics of interest, such a region can be determined automatically depending on user-imposed confidence requirements, allowing for already satisfactorily converged regions of the field of view to be neglected in further analysis, offering significant computational benefits. Temporal fluctuations of the flow are unavoidable even for very steady flows, and the magnitude of such fluctuations will naturally vary over the domain. Moreover, the non-linear modulation effects of the cross-correlation operator exacerbate the perceived temporal fluctuations in regions of strong spatial displacement gradients. It follows, therefore, that steady, uniform, flow regions will require fewer contributing images than their less steady, spatially fluctuating, counterparts within the same field of view, and hence the further analysis of image pairs may be solely driven by small, isolated, non-converged regions. In this paper, a methodology is presented which allows these non-converged regions to be identified and subsequently analysed in isolation from the rest of the image, while ensuring that such localised analysis is not adversely affected by the reduced analysis region, i.e. does not introduce boundary effects, thus accelerating the analysis procedure considerably. Via experimental analysis, it is shown that under typical conditions a 44% reduction in the required number of correlations for an ensemble solution is achieved, compared to conventional image processing routines while maintaining a specified level of confidence over the domain. Graphic abstract

Dynamic topography refers to the vertical deflection (i.e., uplift and subsidence) of the Earth’s surface generated in response to mantle flow. Although dynamic subsidence has been increasingly invoked to explain the subsidence and migration of depocenters in the Late Cretaceous North American Cordilleran foreland basin (CFB), it remains a challenging task to discriminate the effects of dynamic mantle processes from other subsidence mechanisms, and the spatial and temporal scales of dynamic topography is not well known. To unravel the relationship between sedimentary systems, accommodation, and subsidence mechanisms of the CFB through time and space, a high-resolution chronostratigraphic framework was developed for the Upper Cretaceous strata based on a dense data set integrating >600 well logs from multiple basins/regions in Wyoming, Utah, Colorado, and New Mexico, USA. The newly developed stratigraphic framework divides the Upper Cretaceous strata into four chronostratigraphic packages separated by chronostratigraphic surfaces that can be correlated regionally and constrained by ammonite biozones. Regional isopach patterns and shoreline trends constructed for successive time intervals suggest that dynamic subsidence influenced accommodation creation in the CFB starting from ca. 85 Ma, and this wave of subsidence increasingly affected the CFB by ca. 80 Ma as subsidence migrated from the southwest to northeast. During 100−75 Ma, the depocenter migrated from central Utah (dominantly flexural subsidence) to north-central Colorado (dominantly dynamic subsidence). Subsidence within the CFB during 75−66 Ma was controlled by the combined effects of flexural subsidence induced by local Laramide uplifts and dynamic subsidence. Results from this study provide new constraints on the spatio-temporal footprint and migration of large-scale (>400 km × 400 km) dynamic topography at an average rate ranging from ∼120 to 60 km/m.y. in the CFB through the Late Cretaceous. The wavelength and location of dynamic topography (subsidence and uplift) generated in response to the subduction of the conjugate Shatsky Rise highly varied through both space and time, probably depending on the evolution of the oceanic plateau (e.g., changes in its location, subduction angle and depth, and buoyancy). Careful, high-resolution reconstruction of regional stratigraphic frameworks using three-dimensional data sets is critical to constrain the influence of dynamic topography. The highly transitory effects of dynamic topography need to be incorporated into future foreland basin models to better reconstruct and predict the formation of foreland basins that may have formed under the combined influence of upper crustal flexural loading and dynamic subcrustal loading associated with large-scale mantle flows.

IntroductionIn the contemporary West, experiences of time are shaped by—and inextricably linked to—the nature of media production and consumption. In Derrida and Steigler’s estimation, teletechnologies bring time “into play” and thus produce time as an “artifact”, that is, a knowable product (3). How and why time becomes “artifactually” produced, according to these thinkers, is a result of the various properties of media production; media ensure that “gestures” (which can be understood here as the cultural moments marked as significant in some way, especially public ones) are registered. Being so, time is constrained, “formatted, initialised” by the matrix of the media system (3). Subsequently, because the media apparatus undergirds the Western imaginary, so too, the media apparatus undergirds the Western concept of time. We can say, in the radically changing global mediascape then, digital culture performs and generates ontological shifts that rewrite the relationship between media, time, and experience. This point lends itself to the significance of the role of both new media platforms and new media texts in reconfiguring understandings between past, present, and future timescapes.There are various ways in which new media texts and platforms work upon experiences of time. In the following, I will focus on just one of these ways: narrativity. By examining a ‘new media’ text, I elucidate how new media narratives imagine timescapes that are constructed through metaphors of ‘confetti’ or ‘snow’, as opposed to more traditional lineal metaphors like ‘rivers’ or ‘streams’ (see Augustine Sedgewick’s “Against Flows” for more critical thinking on the relationship between history, narrative, and the ‘flows’ metaphor). I focus on the revisioning of narrative structure in the Netflix series The Haunting of Hill House (2018) from its original form in the 1959 novel by Shirley Jackson. The narrative revisioning from the novel to the televisual both demonstrates and manifests emergent conceptualisations of time through the creative play of temporal multi-flows, which are contemporaneous yet fragmented.The first consideration is the shift in textual format. However, the translocation of the narrative from a novel to a televisual text is important, but not the focus here. Added to this, I deliberately move toward a “general narrative analysis” (Cobley 28), which has the advantage of focusing onmechanisms which may be integral to linguistically or visually-based genres without becoming embroiled in parochial questions to do with the ‘effectiveness’ of given modes, or the relative ‘value’ of different genres. This also allows narrative analysis to track the development of a specified process as well as its embodiment in a range of generic and technological forms. (Cobley 28)It should be also be noted from the outset that I am not suggesting that fragmented narrative constructions and representations were never imagined or explored prior to this new media age. Quite the contrary if we think of Modernist writers such as Virginia Woolf (Lodwick; Haggland). Rather, it is to claim that this abstraction is emerging in the mainstream entertainment media in greater contest with the dominant and more historically entrenched version of ‘time as a construct’ that is characterised through Realist narratology as linear and flowing only one way. As I will explore below, the reasons for this are largely related to shifts in everyday media consumption brought about by digital culture. There are two reasons why I specifically utilise Netflix’s series The Haunting of Hill House as a fulcrum from which to lever arguments about new media and the contemporary experience of time. First, as a web series, it embodies some of the pertinent conventions of the digital media landscape, both diegetically and also through practices of production and consumption by way of new time-shifting paradigms (see Leaver). I focus on the former in this article, but the latter is fruitful ground for critical consideration. For example, Netflix itself, as a platform, has somewhat destabilised normative temporal routines, such as in the case of ‘binge-watching’ where audiences ‘lose’ time similarly to gamblers in the casino space. Second, the fact that there are two iterations of the same story—one a novel and one a televisual text—provide us with a comparative benchmark from which to make further assertions about the changing nature of media and time from the mid-century to a post-millennium digital mediascape. Though it should be noted, my discussion will focus on the nature and quality of the contemporary framework, and I use the 1959 novel as a frame of reference only rather than examining its rich tapestry in its own right (for critique on the novel itself, see Wilson; see Roberts).Media and the Production of Time-SenseThere is a remarkable canon of literature detailing the relationship between media and the production of time, which can help us place this discussion in a theoretical framework. I am limited by space, but I will engage with some of the most pertinent material to set out a conceptual map. Markedly, from here, I refer to the Western experience of time as a “time-sense” following E.P. Thompson’s work (80). Following Thompson’s language, I use the term “time-sense” to refer to “our inward notation of time”, characterised by the rhythms of our “technological conditioning” systems, whether those be the forces of labour, media, or otherwise (80). Through the textual analysis of Hill House to follow, I will offer ways in which the technological conditioning of the new media system both constructs and shapes time-sense in terms related to a constellation of moments, or, to use a metaphor from the Netflix series itself, like “confetti” or “snow” (“Silence Lay Steadily”).However, in discussing the production of time-sense through new media mechanisms, note that time-sense is not an abstraction but is still linked to our understandings of the literal nature of time-space. For example, Alvin Toffler explains that, in its most simple construction, “Time can be conceived as the intervals during which events occur” (21). However, we must be reminded that events must first occur within the paradigm of experience. That is to say that matters of ‘duration’ cannot be unhinged from the experiential or phenomenological accounts of those durations, or in Toffler’s words, in an echo of Thompson, “Man’s [sic] perception of time is closely linked with his internal rhythms” (71). In the 1970s, Toffler commented upon the radical expansion of global systems of communications that produces the “twin forces of acceleration and transience”, which “alter the texture of existence, hammering our lives and psyches into new and unfamiliar shapes” (18). This simultaneous ‘speeding up’ (which he calls acceleration) and sense of ‘skipping’ (which he calls transience) manifest in a range of modern experiences which disrupt temporal contingencies. Nearly two decades after Toffler, David Harvey commented upon the Postmodern’s “total acceptance of ephemerality, fragmentation, discontinuity, and the chaotic” (44). Only a decade ago, Terry Smith emphasised that time-sense had become even more characterised by the “insistent presentness of multiple, often incompatible temporalities” (196). Netflix had not even launched in Australia and New Zealand until 2015, as well as a host of other time-shifting media technologies which have emerged in the past five years. As a result, it behooves us to revaluate time-sense with this emergent field of production.That being said, entertainment media have always impressed itself upon our understanding of temporal flows. Since the dawn of cinema in the late 19th century, entertainment media have been pivotal in constructing, manifesting, and illustrating time-sense. This has largely (but not exclusively) been in relation to the changing nature of narratology and the ways that narrative produces a sense of temporality. Helen Powell points out that the very earliest cinema, such as the Lumière Brothers’ short films screened in Paris, did not embed narrative, rather, “the Lumières’ actualities captured life as it happened with all its contingencies” (2). It is really only with the emergence of classical mainstream Hollywood that narrative became central, and with it new representations of “temporal flow” (2). Powell tells us that “the classical Hollywood narrative embodies a specific representation of temporal flow, rational and linear in its construction” reflecting “the standardised view of time introduced by the onset of industrialisation” (Powell 2). Of course, as media production and trends change, so does narrative structure. By the late 20th century, new approaches to narrative structure manifest in tropes such as ‘the puzzle film,’ as an example, which “play with audiences” expectations of conventional roles and storytelling through the use of the unreliable narrator and the fracturing of linearity. In doing so, they open up wider questions of belief, truth and reliability” (Powell 4). Puzzle films which might be familiar to the reader are Memento (2001) and Run Lola Run (1999), each playing with the relationship between time and memory, and thus experiences of contemporaneity. The issue of narrative in the construction of temporal flow is therefore critically linked to the ways that mediatic production of narrative, in various ways, reorganises time-sense more broadly. To examine this more closely, I now turn to Netflix’s The Haunting of Hill House.Narratology and Temporal FlowNetflix’s revision of The Haunting of Hill House reveals critical insights into the ways in which media manifest the nature and quality of time-sense. Of course, the main difference between the 1959 novel and the Netflix web series is the change of the textual format from a print text to a televisual text distributed on an Internet streaming platform. This change performs what Marie-Laure Ryan calls “transfictionality across media” (385). There are several models through which transfictionality might occur and thus transmogrify textual and narratival parametres of a text. In the case of The Haunting of Hill House, the Netflix series follows the “displacement” model, which means it “constructs essentially different versions of the protoworld, redesigning its structure and reinventing its story” (Doležel 206). For example, in the 2018 television remake, the protoworld from the original novel retains integrity in that it conveys the story of a group of people who are brought to a mansion called Hill House. In both versions of the protoworld, the discombobulating effects of the mansion work upon the group dynamics until a final break down reveals the supernatural nature of the house. However, in ‘displacing’ the original narrative for adaptation to the web series, the nature of the group is radically reshaped (from a research contingent to a nuclear family unit) and the events follow radically different temporal contingencies.More specifically, the original 1959 novel utilises third-person limited narration and follows a conventional linear temporal flow through which events occur in chronological order. This style of storytelling is often thought about in metaphorical terms by way of ‘rivers’ or ‘streams,’ that is, flowing one-way and never repeating the same configuration (very much unlike the televisual text, in which some scenes are repeated to punctuate various time-streams). Sean Cubitt has examined the relationship between this conventional narrative structure and time sensibility, stating thatthe chronological narrative proposes to us a protagonist who always occupies a perpetual present … as a point moving along a line whose dimensions have however already been mapped: the protagonist of the chronological narrative is caught in a story whose beginning and end have already been determined, and which therefore constructs story time as the unfolding of destiny rather than the passage from past certainty into an uncertain future. (4)I would map Cubitt’s characterisation onto the original Hill House novel as representative of a mid-century textual artifact. Although Modernist literature (by way of Joyce, Woolf, Eliot, and so forth) certainly ‘played’ with non-linear or multi-linear narrative structures, in relation to time-sense, Christina Chau reminds us that Modernity, as a general mood, was very much still caught up in the idea that “time that moves in a linear fashion with the future moving through the present and into the past” (26). Additionally, even though flashbacks are utilised in the original novel, they are revealed using the narrative convention of ‘memories’ through the inner dialogue of the central character, thus still occurring in the ‘present’ of the novel’s timescape and still in keeping with a ‘one-way’ trajectory. Most importantly, the original novel follows what I will call one ‘time-stream’, in that events unfold, and are conveyed through, one temporal flow.In the Netflix series, there are obvious (and even cardinal) changes which reorganise the entire cast of characters as well as the narrative structure. In fact, the very process of returning to the original novel in order to produce a televisual remake says something about the nature of time-sense in itself, which is further sophisticated by the recognition of Netflix as a ‘streaming service’. That is, Netflix encapsulates this notion of ‘rivers-on-demand’ which overlap with each other in the context of the contemporaneous and persistent ‘now’ of digital culture. Marie-Laure Ryan suggests that “the proliferation of rewrites … is easily explained by the sense of pastness that pervades Postmodern culture and by the fixation of contemporary thought with the textual nature of reality” (386). While the Netflix series remains loyal to the mood and basic premise (i.e., that there is a haunted house in which characters endure strange happenings and enter into psycho-drama), the series instead uses fractured narrative convention through which three time-streams are simultaneously at work (although one time-stream is embedded in another and therefore its significance is ‘hidden’ to the viewer until the final episode), which we will examine now.The Time-Streams of Hill HouseIn the Netflix series, the central time-stream is, at first, ostensibly located in the characters’ ‘present’. I will call this time-stream A. (As a note to the reader here, there are spoilers for those who have not watched the Netflix series.) The viewer assumes they are, from the very first scene, following the ‘present’ time-stream in which the characters are adults. This is the time-stream in which the series opens, however, only for the first minute of viewing. After around one minute of viewing time, we already enter into a second time-stream. Even though both the original novel and the TV series begin with the same dialogue, the original novel continues to follow one time-stream, while the TV series begins to play with contemporaneous action by manifesting a second time-stream (following a series of events from the characters past) running in parallel action to the first time-stream. This narrative revisioning resonates with Toffler’s estimation of shifting nature of time-sense in the later twentieth century, in which he cites thatindeed, not only do contemporary events radiate instantaneously—now we can be said to be feeling the impact of all past events in a new way. For the past is doubling back on us. We are caught in what might be called a ‘time skip’. (16)In its ‘displacement’ model, the Hill House televisual remake points to this ongoing fascination with, and re-actualisation of, the exaggerated temporal discrepancies in the experience of contemporary everyday life. The Netflix Hill House series constructs a dimensional timescape in which the timeline ‘skips’ back and forth (not only for the viewer but also the characters), and certain spaces (such as the Red Room) are only permeable to some characters at certain times.If we think about Toffler’s words here—a doubling back, or, a time-skip—we might be pulled toward ever more recent incarnations of this effect. In Helen Powell’s investigation of the relationship between narrative and time-sense, she insists that “new media’s temporalities offer up the potential to challenge the chronological mode of temporal experience” (152). Sean Cubitt proposes that with the intensification of new media “we enter a certain, as yet inchoate, mode of time. For all the boasts of instantaneity, our actual relations with one another are mediated and as such subject to delays: slow downloads, periodic crashes, cache clearances and software uploads” (10). Resultingly, we have myriad temporal contingencies running at any one time—some slow, frustrating, mundane, in ‘real-time’ and others rapid to the point of instantaneous, or even able to pull the past into the present (through the endless trove of archived media on the web) and again into other mediatic dimensions such as virtual reality. To wit, Powell writes that “narrative, in mirroring these new temporal relations must embody fragmentation, discontinuity and incomplete resolution” (153). Fragmentation, discontinuity, and incompleteness are appropriate ways to think through the Hill House’s narrative revision and the ways in which it manifests some of these time-sensibilities.The notion of a ‘time-skip’ is an appropriate way to describe the transitions between the three temporal flows occurring simultaneously in the Hill House televisual remake. Before being comfortably seated in any one time-stream, the viewer is translocated into a second time-stream that runs parallel to it (almost suggesting a kind of parallel dimension). So, we begin with the characters as adults and then almost immediately, we are also watching them as children with the rapid emergence of this second time-stream. This ‘second time-stream’ conveys the events of ‘the past’ in which the central characters are children, so I will call this time-stream B. While time-stream B conveys the scenes in which the characters are children, the scenes are not necessarily in chronological order.The third time-stream is the spectral-stream, or time-stream C. However, the viewer is not fully aware that there is a totally separate time stream at play (the audience is made to think that this time-stream is the product of mere ghost-sightings). This is until the final episode, which completes the narrative ‘puzzle’. That is, the third time-stream conveys the events which are occurring simultaneously in both of the two other time-streams. In a sense, time-stream C, the spectral stream, is used to collapse the ontological boundaries of the former two time-streams. Throughout the early episodes, this time-stream C weaves in and out of time-streams A and B, like an intrusive time-stream (intruding upon the two others until it manifests on its own in the final episode). Time-stream C is used to create a 'puzzle' for the viewer in that the viewer does not fully understand its total significance until the puzzle is completed in the final episode. This convention, too, says something about the nature of time-sense as it shifts and mutates with mediatic production. This echoes back to Powell’s discussion of the ‘puzzle’ trend, which, as I note earlier, plays with “audiences’ expectations of conventional roles and storytelling through the use of the unreliable narrator and the fracturing of linearity” which serves to “open up wider questions of belief, truth and reliability” (4). Similarly, the skipping between three time-streams to build the Hill House puzzle manifests the ever-complicating relationships of time-management experiences in everyday life, in which pasts, presents, and futures impinge upon one another and interfere with each other.Critically, in terms of plot, time-stream B (in which the characters are little children) opens with the character Nell as a small child of 5 or 6 years of age. She appears to have woken up from a nightmare about The Bent Neck Lady. This vision traumatises Nell, and she is duly comforted in this scene by the characters of the eldest son and the father. This provides crucial exposition for the viewer: We are told that these ‘visitations’ from The Bent Neck Lady are a recurring trauma for the child-Nell character. It is important to note that, while these scenes may be mistaken for simple memory flashbacks, it becomes clearer throughout the series that this time-stream is not tied to any one character’s memory but is a separate storyline, though critical to the functioning of the other two. Moreover, the Bent Neck Lady recurs as both (apparent) nightmares and waking visions throughout the course of Nell’s life. It is in Episode Five that we realise why.The reason why The Bent Neck Lady always appears to Nell is that she is Nell. We learn this at the end of Episode Five when the storyline finally conveys how Nell dies in the House, which is by hanging from a noose tied to the mezzanine in the Hill House foyer. As Nell drops from the mezzanine attached to this noose, her neck snaps—she is The Bent Neck Lady. However, Nell does not just drop to the end of the noose. She continues to drop five more times back into the other two time streams. Each time Nell drops, she drops into a different moment in time (and each time the neck snapping is emphasised). The first drop she appears to herself in a basement. The second drop she appears to herself on the road outside the car while she is with her brother. The third is during (what we have been told) is a kind of sleep paralysis. The fourth and fifth drops she appears to herself as the small child on two separate occasions—both of which we witness with her in the first episode. So not only is Nell journeying through time, the audience is too. The viewer follows Nell’s journey through her ‘time-skip’. The result of the staggered but now conjoined time-streams is that we come to realise that Nell is, in fact, haunting herself—and the audience now understands they have followed this throughout not as a ghost-sighting but as a ‘future’ time-stream impinging on another.In the final episode of season one, the siblings are confronted by Ghost-Nell in the Red Room. This is important because it is in this Red Room through which all time-streams coalesce. The Red Room exists dimensionally, cutting across disparate spaces and times—it is the spatial representation of the spectral time-stream C. It is in this final episode, and in this spectral dimension, that all the three time-streams collapse upon each other and complete the narrative ‘puzzle’ for the viewer. The temporal flow of the spectral dimension, time-stream C, interrupts and interferes with the temporal flow of the former two—for both the characters in the text and viewing audience.The collapse of time-streams is produced through a strategic dialogic structure. When Ghost-Nell appears to the siblings in the Red Room, her first line of dialogue is a non-sequitur. Luke emerges from his near-death experience and points to Nell, to which Nell replies: “I feel a little clearer just now. We have. All of us have” ("Silence Lay Steadily"). Nell’s dialogue continues but, eventually, she returns to the same statement, almost like she is running through a cyclic piece of text. She states again, “We have. All of us have.” However, this time around, the phrase is pre-punctuated by Shirley’s claim that she feels as though she had been in the Red Room before. Nell’s dialogue and the dialogue of the other characters suddenly align in synchronicity. The audience now understands that Nell’s very first statement, “We have. All of us have” is actually a response to the statement that Shirley had not yet made. This narrative convention emphasises the ‘confetti-like’ nature of the construction of time here. Confetti is, after all, sheets of paper that have been cut into pieces, thrown into the air, and then fallen out of place. Similarly, the narrative makes sense as a whole but feels cut into pieces and realigned, if only momentarily. When Nell then loops back through the same dialogue, it finally appears in synch and thus makes sense. This signifies that the time-streams are now merged.The Ghost of Nell has travelled through (and in and out of) each separate time-stream. As a result, Ghost-Nell understands the nature of the Red Room—it manifests a slippage of timespace that each of the siblings had entered during their stay at the Hill House mansion. It is with this realisation that Ghost-Nell explains:Everything’s been out of order. Time, I mean. I thought for so long that time was like a line, that ... our moments were laid out like dominoes, and that they ... fell, one into another and on it went, just days tipping, one into the next, into the next, in a long line between the beginning ... and the end.But I was wrong. It’s not like that at all. Our moments fall around us like rain. Or... snow. Or confetti. (“Silence Lay Steadily”)This brings me to the titular concern: The emerging abstraction of time as a mode of layering and fracturing, a mode performed through this analogy of ‘confetti’ or ‘snow’. The Netflix Hill House revision rearranges time constructs so that any one moment of time may be accessed, much like scrolling back and forth (and in and out) of social media feeds, Internet forums, virtual reality programs and so forth. Each moment, like a flake of ‘snow’ or ‘confetti’ litters the timespace matrix, making an infinite tapestry that exists dimensionally. In the Hill House narrative, all moments exist simultaneously and accessing each moment at any point in the time-stream is merely a process of perception.ConclusionNetflix is optimised as a ‘streaming platform’ which has all but ushered in the era of ‘time-shifting’ predicated on geospatial politics (see Leaver). The current media landscape offers instantaneity, contemporaneity, as well as, arbitrary boundedness on the basis of geopolitics, which Tama Leaver refers to as the “tyranny of digital distance”. Therefore, it is fitting that Netflix’s revision of the Hill House narrative is preoccupied with time as well as spectrality. Above, I have explored just some of the ways that the televisual remake plays with notions of time through a diegetic analysis.However, we should take note that even in its production and consumption, this series, to quote Graham Meikle and Sherman Young, is embedded within “the current phase of television [that] suggests contested continuities” (67). Powell problematises the time-sense of this media apparatus further by reminding us that “there are three layers of temporality contained within any film image: the time of registration (production); the time of narration (storytelling); and the time of its consumption (viewing)” (3-4). Each of these aspects produces what Althusser and Balibar have called a “peculiar time”, that is, “different levels of the whole as developing ‘in the same historical time’ … relatively autonomous and hence relatively independent, even in its dependence, of the ‘times’ of the other levels” (99). When we think of the layers upon layers of different time ‘signatures’ which converge in Hill House as a textual artifact—in its production, consumption, distribution, and diegesis—the nature of contemporary time reveals itself as complex but also fleeting—hard to hold onto—much like snow or confetti.ReferencesAlthusser, Louis, and Étienne Balibar. Reading Capital. London: NLB, 1970.Cobley, Paul. Narrative. Hoboken: Taylor and Francis, 2013.Cubitt, S. “Spreadsheets, Sitemaps and Search Engines.” New Screen Media: Cinema/Art/Narrative. Eds. Martin Rieser and Andrea Zapp. London: BFI, 2002. 3-13.Derrida, Jacques, and Bernard Stiegler. Echographies of Television: Filmed Interviews. Massachusetts: Polity Press, 2002.Doležel, Lubomir. Heterocosmica: Fiction and Possible Worlds. Baltimore: Johns Hopkins UP, 1999.Hägglund, Martin. Dying for Time: Proust, Woolf, Nabokov. Cambridge: Harvard UP, 2012.Hartley, Lodwick. “Of Time and Mrs. Woolf.” The Sewanee Review 47.2 (1939): 235-241.Harvey, David. Condition of Postmodernity: An Enquiry into the Origins of Cultural Change. Oxford: Blackwell, 1989.Jackson, Shirley. The Haunting of Hill House. New York: Viking, 1959.Laurie-Ryan Marie. “Transfictionality across Media.” Theorizing Narrativity. Eds. John Pier, García Landa, and José Angel. Berlin: Walter de Gruyter, 2008. 385-418.Leaver, Tama. “Watching Battlestar Galactica in Australia and the Tyranny of Digital Distance.” Media International Australia 126 (2008): 145-154.Meikle, George, and Sherman Young. “Beyond Broadcasting? TV For the Twenty-First Century.” Media International Australia 126 (2008): 67-70.Powell, Helen. Stop the Clocks! Time and Narrative in Cinema. London: I.B. Tauris, 2012.Roberts, Brittany. “Helping Eleanor Come Home: A Reassessment of Shirley Jackson’s The Haunting of Hill House.” The Irish Journal of Gothic and Horror Studies 16 (2017): 67-93.Smith, Terry. What Is Contemporary Art? Chicago: U of Chicago P, 2009.The Haunting of Hill House. Mike Flanagan. Amblin Entertainment, 2018.Thompson, E.P. “Time, Work-Discipline, and Industrial Capitalism.” Past and Present 38.1 (1967): 56-97.Toffler, Alvin. Future Shock. New York: Bantam Books, 1971.Wilson, Michael T. “‘Absolute Reality’ and the Role of the Ineffable in Shirley Jackson’s The Haunting of Hill House.” Journal of Popular Culture 48.1 (2015): 114-123.

Nearly 50 years on from Alvin Toffler’s Future Shock (1971), contemporary society finds itself navigating the Fourth Industrial Revolution. This era has been described as the convergence of digitisation, robotics, artificial intelligence, globalisation—and speed (Johannessen). As such, temporality is taking on a turbulent and elusive edge. In the previous century, Toffler highlighted that technological change accelerated perceptions of time, and he predicted that by the 21st century, people would find it “increasingly painful to keep up with the incessant demand for change that characterises our time”, where change would come about “with waves of ever accelerating speed and unprecedented impact” (18). While Toffler could not have predicted the exact nature and detail of the specificities of day-to-day life in 2019, we suggest Toffler’s characterisation marks an insightful ‘jumping off’ point for further introspection. With Toffler’s concerns in mind, this issue of M/C Journal is interested in multiple ways that digital media influences and expresses conceptions of temporality in this historical period, the final weeks of 2019. On the basis of the pieces that comprise this issue, we take this concern further to politicise the temporal figurations of media, which we propose permeate all aspects of contemporary experience. Theoretically, this position pays homage to the work performed by Jay Bolter and Richard Grusin more than two decades ago. In 1996, Bolter and Grusin ruminated on the “the wire”, a fictional device that was the central focus of the film Strange Days (1995), a media gadget that could mediate experience from one subject to another, “pure and uncut, straight from the cerebral cortex” (311). For Bolter and Grusin, ‘the wire’ epitomised contemporary culture’s movement toward virtual reality, “with its goal of unmediated visual and aural experience” and they suggested that the film provided a critique of the historical mode “in which digital technologies are proliferating faster than our cultural, legal, or educational institutions can keep up with them” (313). For us, perhaps even more urgently, the wire epitomises the colonisation, infiltration and permeation of the production of temporal layers through media systems and devices into the subject’s direct experience. The wire symbolises, among many things, a simulation of the terrain of time according to the Jorge Luis Borges fable, that is, one-for-one.Contingent upon new shifts, and the academic literature which has sought to critique them thus far, in this editorial, we raise the contention that the technologies and operations of power brought about through the Fourth Industrial Revolution, and its media apparatus, have exposed the subject to a multiplicity of timescapes. In doing so, these configurations have finally colonised subjective experience of time and temporality.Consequently, we have specifically featured a broad selection of articles that explore and discuss the presence of online, mobile, or streamed media as the primary means through which culture understands, expresses, and communicates the world, and ideas around temporality. The articles featured herein explore the ways in which constructs of time organise (and are organised by) other constructs such as; neoliberalism (Bianchino), relaxation (Pont), clocks (Cambpell), surveillance, biopower, narrative (Glitsos), monetisation (Grandinetti), memorialising (Wishart), time travel (Michael), utopias and dystopias (Herb). Through the spectrum of topics, we hope to elucidate to the reader the ways in which digital culture performs and generates ontological shifts that rewrite the relationship between media, time, and experience.ContemporaneityA key concern for us in this issue is the idea of ‘contemporaneity,’ which has been discussed more recently in art theory and criticism by Terry Smith, and Peter Osborne, amongst others. Both Smith and Osborne use the term to articulate the effects of contemporary globalisation, transnationalism, and post-conceptual art. Smith reminds us that in contemporary society there isthe insistent presentness of multiple, often incompatible temporalities accompanied by the failure of all candidates that seek to provide the overriding temporal framework – be it modern, historical, spiritual, evolutionary, geological, scientific, globalizing, planetary. (196)As a result, artists are negotiating and critiquing multiple intersecting and contradictory time codes that pervade contemporary society in order to grapple with contemporaneity today. Yet, concerns with overlayed temporalities enter our everyday more and more, as explored through Justin Grandinetti’s piece, “A Question of Time: HQ Trivia and Mobile Streaming Temporality”, in which he interrogates mobile streaming practices and the ways in which new devices seek out every possible moment that might be monetised and ‘made productive.’Grandinetti’s concern, like the others featured in this issue, attends to the notion of time as evasive, contradictory and antonymous while forming a sense of urgency around the changing present, and also reconciling a multiplicity of time codes at play through technology today. The present is immediately written and archived through news media live feeds, GPS tracking and bio data in apps used for fitness and entertainment amongst others, while the pace of national television, print media, and local radio is folded through our daily experiences. Consequently, we’re interested in the multiple, and sometimes incompatible temporalities that emerge through the varied ways in which digital media is used to express, explore, and communicate in the world today beyond the arenas of contemporary art and art history that Smith and Osborne are primarily concerned with. ExperienceExperience is key. Experience may in fact be the key that unlocks these following conversations about time and the subject, after all, time is nothing if not experiential. Empirically, we might claim that, time is “conceived as the intervals during which events occur” (Toffler 21). However, of course one can only be if one is being in time. Through Bergson we might say that the individual’s perception of time manifests “rightly or wrongly, to be inside and outside us at one and the same time … . To each moment of our inner life there thus corresponds a moment of our body and of all environing matter that is ‘simultaneous’ with it” (205). Time is the platform through which experience of consciousness is mediated, thus the varying manipulations of time through media apparatuses are therefore inextricable with our lived ‘everyday’.E.P. Thompson might call this our “time-sense”, a kind of “inward notation of time” (58), however this rationalisation of time is amplified and complicated by digital media, as warned by Campbell in this issue. Campbell explores the performativity of publicly writing the self on social media that commodifies experience. An inward notion of time therefore becomes inverted and publicly performed through digital media, which is a key source of anxiety and control for individuals. In Toffler’s estimation, even by as early as the 1970s the technoscience of Western culture had “released a totally new social force” and he contends that this had reshaped the collective psyche witha stream of change so accelerated that it influences our sense of time, revolutionizes the tempo of daily life, and affects the very way we “feel” the world around us. We no longer “feel” life as men [sic] did in the past. And this is the ultimate difference, the distinction that separates the truly contemporary man [sic] from all others. (17)While Toffler was referring to a different technological context, he serves as a reminder that digital media amplifies pre-existing effects of technology. Therefore, while autofiction and the public writing of the self is not necessarily new, it is nevertheless key to contemporary feelings of acceleration and the temporal vernacular of contemporaneity – one that exacerbates the experiences of acceleration, inertia, and how we ‘feel’ the present and our presence in the world.In this issue we also wish to note the ways in which digital culture, and perhaps in particular new media platforms and narratives that permeate our homes, appear to be directing the Western “time-sense” (Thompson 80) away from metaphors constructed through the linear trope of ‘rivers’ or ‘streams’ and toward the more complex arrangements that we suggest are more suited to metaphors of ‘confetti’ or ‘snow’, as Laura Glitsos elucidates in her piece “From Rivers to Confetti: Reconfigurations of Time through New Media Landscapes”.As just one example, we might think of the multiplicity of ‘peculiar times’ built upon each other in the production, distribution, consumption and convergence of so many levels of digital media. In one sense, we might approach ‘peculiar times’ as the peculiarity of temporality in any given context. However, in another sense, we might also recognise the layering of standardisation which is then peculiar to each of the modes of production, consumption, and distribution (as laid out by Althusser and Balibar). As just one example, in the context of streaming services, we find the “flattening of historical frames” (Kaplan 144) in the scrolling back and forward on social media timelines (Powell 2). So perhaps our peculiar time speaks of the collapsing between ontological boundaries of past, present, and future—a kind of contemporaneity that splits between the peculiarities of production and consumption of digital media.StandardisationHistoriographies of time-sense in the Western tradition have been covered by thinkers as diverse as E.P. Thompson, Graeme Davidson, Bernard Stiegler, and Henri Lefebvre. While it is not our aim to repeat those narratives here, we concede some markers are crucial to note in order to set the context for our selected pieces. Beginning in the early- to mid- middle ages in Europe, up until the spread of clocks in the 14th century, time was largely related to processes, tasks or stages of light during the day, and time does still continues to exist in this way for some communities (Thompson 58). During this era, and of even back to the third century BCE, there were time-keeping technologies which could measure smaller increments of the day, such as the water-clock, the sun-dial, and the hour-glass, but everyday activities for the working people were largely regulated by natural or circadian rhythms (Thompson). It is perhaps these rhythms which served to shape the ‘inward notation of time’, in Thompson’s words, through the discourses of nature, that is through the language of streams and rivers—or ‘flows’.The 13th century saw the advent of mechanical time-keeping technology utilising what is called a “verge escapement mechanism”, that is, a “feedback regulator that controls the speed of a mechanical clock” (Headrick 42). About a century later, coupled with the emergence of puritanism, Thompson tells us that we start to see a shift in the construction of time which more and more depends on the synchronisation of labour (Thompson 70). Even so, working rhythms remain fairly irregular, still more suited to what Thompson describes as “a natural human rhythm” (71). This changes suddenly in the 19th century when, with the explosion of the Industrial Age, we witness the dominance of factory-time and, of course, the adoption and standardisation of railway-time across Britain, Europe, India and North America (Schivelbusch). The trend toward standardisation continues into the mid-20th century with what George Ritzer has famously called “McDonaldization” (2008). Thus, through the blanketing nature of 20th century “industrial capitalism” (Thompson 80), everyday experience became predicated on standardisation. Thompson tells us that these “changes in manufacturing technique … demand greater synchronization of labour and a greater exactitude in time-routines in society” (80). For Thompson, the “technological conditioning” of “time-sense” ushers in the model of “time-measurement as a means of labour exploitation” (80). This historical point is central to Giacomo Bianchino’s argument in “Afterwork and Overtime: The Social Reproduction of Human Capital”, in his discussion of the fundamental nature of capitalism in shaping time-sense. However, what we suggest is that this theme of ‘time-sense’ as shaped by the broader political economy of media is found within each of the pieces in the issue.A discussion of standardisation is problematic, however, in the wider conceptualisation of time as elusive, multi-dynamic and fractured. Surely, standardisation should at least come with the ability of certainty, in some respects. However, this is the paradox of the digital and new media age: That standardisation is both arbitrary and, in echo of Balibar and Althusser, ‘peculiar’ to an endless layering of separate time-streams. It is, perhaps, the jumping between them, which has become a necessary function of living in the digital age, that produces the sense of fracture, the loss of standard.This issue of M/C Journal explores the various ways in which the constellation of current media practices that are online, offline, embodied, and networked, collectively inform and express concepts of time. The feature article "With This Body, I Subtract Myself from Neoliberalised Time: Sub-Habituality & Relaxation after Deleuze", written by Antonia Pont, keenly asks how relaxation might be used to evade neoliberal machinations around organising time, efficiency, and productivity, all of which endanger a diversity of temporalities. While all media have their own unique limitations and affordances regarding influencing and expressing relationships to time, they are also impacted by current perceptions of uncertainty and neoliberal agendas that underlie the working relationships between people, the media that they engage in, and representations of the world.The feelings of inertia expressed by Toffler nearly 50 years ago has not only been accelerated through technological expansion, but by a layering of multiple time codes which reflect the wide range of media practices that permeate the contemporary vernacular. In 2019, concepts from the current post-Internet stage are beginning to emerge and we are finding that digital media fragments as much as it connects and unites. An ‘inward notion of time’ becomes brokered through automated processes, issues around surveillance, affect, standardisation, norms, nostalgia, and the minutiae of digital time.ReferencesAlthusser, Louis, and Etienne Balibar. Reading Capital. London: NBL, 1970.Ansell-Pearson, Keith, John Ó Maoilearca, and Melissa McMahon. Henri Bergson: Key Writings. New York: Continuum, 2002.Bolter, Jay, and Richard Grusin. “Remediation.” Configurations 4.3 (1996): 311-358.Davison, Graeme. The Unforgiving Minute: How Australia Learned to Tell the Time. Melbourne: Oxford UP, 1993.Headrick, M.V. “Origin and Evolution of the Anchor Clock Escapement.” IEEE Control Systems 22.2 (2002): 41-52.Johannessen, Jon-Arild. Automation, Innovation and Economic Crisis: Surviving the Fourth Industrial Revolution. Milton: Routledge, 2018.Kaplan, E. Ann. Rocking around the Clock: Music Television, Postmodernism, and Consumer Culture. New York: Methuen, 1987.Powell, Helen. Stop the Clocks! Time and Narrative in Cinema. London: I.B. Tauris, 2012.Ritzer, George. The McDonaldization of Society. Los Angeles: Pine Forge P, 2008.Schivelbusch, Wolfgang. The Railway Journey: The Industrialization of Time and Space in the Nineteenth Century. Oakland: U of California P, 2014.Smith, Terry. What Is Contemporary Art? Chicago: U of Chicago P, 2009.Thompson, E.P. “Time, Work-Discipline, and Industrial Capitalism.” Past and Present 38.1 (1967): 56-97.Toffler, Alvin. Future Shock. London: Bodley Head, 1970.

IntroductionIn this article, I discuss the potential of sound to construct fictional spaces and build relations between bodies using two performance installations as case studies. The first is Invisible Flock’s 105+dB, a site-specific sound work which transports crowd recordings of a soccer match to alternative geographical locations. The second is Atelier Bildraum’s Bildraum, an installation performance using live photography, architectural models, and ambient sound. By writing through these two works, I question how sound builds relations between bodies and across space as well as questioning the role of site within sound installation works. The potential for sound to create shared space and foster relationships between bodies, objects, and the surrounding environment is evident in recent contemporary art exhibitions. For MOMA’s Soundings: A Contemporary Score, curator Barbara London, sought to create a series of “tuned environments” rather than use headphones, emphasising the potential of sound works to envelop the gallery goer. Similarly, Sam Belinafante’s Listening, aimed to capture a sense of how sound can influence attention by choreographing the visitors’ experience towards the artworks. By using motorised technology to stagger each installation, gallery goers were led by their ears. Both London’s and Belinafante’s curatorial approaches highlight the current awareness and interest in aural space and its influence on bodies, an area I aim to contribute to with this article.Audio-based performance works consisting of narration or instructions received through headphones feature as a dominant trend within the field of theatre and performance studies. Well-known examples from the past decade include: Janet Cardiff’s The Missing Case Study B; Graeme Miller’s Linked; and Lavinia Greenlaw’s Audio Obscura. The use of sound in these works offers several possibilities: the layering of fiction onto site, the intensification, or contradiction of existing atmospheres and, in most cases, the direction of audience attention. Misha Myers uses the term ‘percipient’ to articulate this mode of engagement that relies on the active attendance of the participant to their surroundings. She states that it is the participant “whose active, embodied and sensorial engagement alters and determines [an artistic] process and its outcomes” (172-23). Indeed, audio-based works provide invaluable ways of considering how the body of the audience member might be engaged, raising important issues in relation to sound, embodiment and presence. Yet the question remains, outside of individual acoustic environments, how does sound build physical relations between bodies and across space? Within sound studies the World Soundscape Project, founded in the 1970s by R. Murray Schafer, documents the acoustic properties of cities, nature, technology and work. Collaborations between sound engineers and musicians indicated the musicality inherent in the world encouraging attunement to the acoustic characteristics of our environment. Gernot Böhme indicates the importance of personal and emotional impressions of space, experienced as atmosphere. Atmosphere, rather than being an accumulation of individual acoustic characteristics, is a total experience. In relation to sound, sensitivity to this mode of engagement is understood as a need to shift from hearing in “an instrumental sense—hearing something—into a way of taking part in the world” (221). Böhme highlights the importance of the less tangible, emotional consistency of our surrounding environment. Brandon Labelle further indicates the social potential of sound by foregrounding the emotional and psychological charges which support “event-architecture, participatory productions, and related performative aspects of space” (Acoustic Spatiality 2) these, Labelle claims enable sound to catalyse both the material world and our imaginations. Sound as felt experience and the emotional construction of space form the key focus here. Within architectural discourse, both Juhani Pallasmaa and Peter Zumthor point to atmospheric nuances and flows of energy which can cause events to furnish the more rigid physical constructs we exist between, influencing spatial quality. However, it is sensorial experience Jean-Paul Thibaud claims, including attention to light, sound, smell and texture that informs much of how we situate ourselves, contributing to the way we imaginatively construct the world we inhabit, even if only of temporary duration. To expand on this, Thibaud locates the sensorial appreciation of site between “the lived experience of people as well as the built environment of the place” (Three Dynamics 37) hinting at the presence of energetic flows. Such insights into how relations are built between bodies and objects inform the approach taken in this article, as I focus on sensorial modes of engagement to write through my own experience as listener-spectator. George Home-Cook uses the term listener-spectator to describe “an ongoing, intersensorial bodily engagement with the affordances of the theatrical environment” (147) and a mode of attending that privileges phenomenal engagement. Here, I occupy the position of the listener-spectator to attend to two installations, Invisible Flock’s 105+dB and Atelier Bildraum’s Bildraum. The first is a large-scale sound installation produced for Hull UK city of culture, 2017. The piece uses audio recordings from 16 shotgun microphones positioned at the periphery of Hull City’s soccer pitch during a match on 28 November 2016. The piece relocates the recordings in public space, replaying a twenty-minute edited version through 36 speakers. The second, Bildraum, is an installation performance consisting of photographer Charlotte Bouckaert, architect Steve Salembier with sound by Duncan Speakman. The piece, with a running time of 40-minutes uses architectural models, live photography, sound and lighting to explore narrative, memory, and space. In writing through these two case studies, I aim to emphasise sensorial engagement. To do so I recognise, as Salomé Voegelin does, the limits of critical discourse to account for relations built through sound. Voegelin indicates the rift critical discourse creates between what is described and its description. In her own writing, Voegelin attempts to counteract this by using the subjective “I” to foreground the experience of a sound work as a writer-listener. Similarly, here I foreground my position as a listener-spectator and aim to evidence the criticality within the work by writing through my experience of attending thereby bringing out mood, texture, atmosphere to foreground how relations are built across space and between bodies.105+dB Invisible Flock January 2017, I arrive in Hull for Invisible Flock’s 105+dB programmed as part of Made in Hull, a series of cultural activities happening across the city. The piece takes place in Zebedee’s Yard, a pedestrianised area located between Princes Dock Street and Whitefriargate in the grounds of the former Trinity House School. From several streets, I can already hear a crowd. Sound, porous in its very nature, flows through the city expanding beyond its immediate geography bringing the notion of a fictional event into being. I look in pub windows to see which teams are playing, yet the visual clues defy what my ears tell me. Listening, as Labelle suggests is relational, it brings us into proximity with nearby occurrences, bodies and objects. Sound and in turn listening, by both an intended and unsuspecting public, lures bodies into proximity aurally bound by the promise of an event. The use of sound, combined with the physical sensation implied by the surrounding architecture serves to construct us as a group of attendees to a soccer match. This is evident as I continue my approach, passing through an archway with cobbled stones underfoot. The narrow entrance rapidly fills up with bodies and objects; push chairs, wheelchairs, umbrellas, and thick winter coats bringing us into close physical contact with one another. Individuals are reduced to a sea of heads bobbing towards the bright stadium lights now visible in the distance. The title 105+dB, refers to the volume at which the sound of an individual voice is lost amongst a crowd, accordingly my experience of being at the site of the piece further echoes this theme. The physical structure of the archway combined with the volume of bodies contributes to what Pallasmaa describes as “atmospheric perception” (231), a mode of attending to experience that engages all the senses as well as time, memory and imagination. Sound here contributes to the atmosphere provoking a shift in my listening. The importance of the listener-spectator experience is underscored by the absence of architectural structures habitually found in stadiums. The piece is staged using the bare minimum: four metal scaffolding structures on each side of the Yard support stadium lights and a high-visibility clad figure patrols the periphery. These trappings serve to evoke an essence of the original site of the recordings, the rest is furnished by the audio track played through 36 speakers situated at intervals around the space as well as the movement of other bodies. As Böhme notes: “Space is genuinely experienced by being in it, through physical presence” (179) similarly, here, it is necessary to be in the space, aurally immersed in sound and in physical proximity to other bodies moving across the Yard. Image 1: The piece is staged using the bare minimum, the rest is furnished by the audio track and movement of bodies. Image courtesy of the artists.The absence of visual clues draws attention to the importance of presence and mood, as Böhme claims: “By feeling our own presence, we feel the space in which we are present” (179). Listening-spectators actively contribute to the event-architecture as physical sensations build and are tangibly felt amongst those present, influenced by the dramaturgical structure of the audio recording. Sounds of jeering, applause and the referees’ whistle combine with occasional chants such as “come on city, come on city” marking a shared rhythm. Specific moments, such as the sound of a leather ball hitting a foot creates a sense of expectation amongst the crowd, and disappointed “ohhs” make a near-miss audibly palpable. Yet, more important than a singular sound event is the sustained sensation of being in a situation, a distinction Pallasmaa makes, foregrounding the “ephemeral and dynamic experiential fields” (235) offered by music, an argument I wish to consider in relation to this sound installation.The detail of the recording makes it possible to imagine, and almost accurately chart, the movement of the ball around the pitch. A “yeah” erupts, making it acoustically evident that a goal is scored as the sound of elation erupts through the speakers. In turn, this sensation much like Thibaud’s concept of intercorporeality, spreads amongst the bodies of the listening-spectators who fist bump, smile, clap, jeer and jump about sharing and occupying Zebedee’s Yard with physical manifestations of triumph. Through sound comes an invitation to be both physically and emotionally in the space, indicating the potential to understand, as Pallasmaa suggests, how “spaces and true architectural experiences are verbs” (231). By physically engaging with the peaks and troughs of the game, a temporary community of sorts forms. After twenty minutes, the main lights dim creating an amber glow in the space, sound is reduced to shuffling noises as the stadium fills up, or empties out (it is impossible to tell). Accordingly, Zebedee’s Yard also begins to empty. It is unclear if I am listening to the sounds in the space around me, or those on the recording as they overlap. People turn to leave, or stand and shuffle evidencing an attitude of receptiveness towards their surrounding environment and underscoring what Thibaud describes as “tuned ambiance” where a resemblance emerges “between what is felt and what is produced” (Three Dynamics 44). The piece, by replaying the crowd sounds of a soccer match across the space of Zebedee’s Yard, stages atmospheric perception. In the absence of further architectural structures, it is the sound of the crowd in the stadium and in turn an attention to our hearing and physical presence that constitutes the event. Bildraum Atelier BildraumAugust 2016, I am in Edinburgh to see Bildraum. The German word “bildraum” roughly translates as image room, and specifically relates to the part of the camera where the image is constructed. Bouckaert takes high definition images live onstage that project immediately onto the screen at the back of the space. The audience see the architectural model, the taking of the photograph, the projected image and hear both pre-recorded ambient sounds by Speakman, and live music played by Salembier generating the sensation that they are inhabiting a bildraum. Here I explore how both sound and image projection can encourage the listener-spectator to construct multiple narratives of possible events and engage their spatial imagination. Image 2: The audience see the architectural model, the taking of the photograph, the projected image and hear both live and pre-recorded sounds. Image courtesy of the artists.In Bildraum, the combination of elements (photographic, acoustic, architectural) serve to create provocative scenes which (quite literally) build multiple spaces for potential narratives. As Bouckaert asserts, “when we speak with people after the performance, they all have a different story”. The piece always begins with a scale model of the actual space. It then evolves to show other spaces such as a ‘social’ scene located in a restaurant, a ‘relaxation’ scene featuring sun loungers, an oversize palm tree and a pool as well as a ‘domestic’ scene with a staircase to another room. The use of architectural models makes the spaces presented appear as homogenous, neutral containers yet layers of sound including footsteps, people chatting, doors opening and closing, objects dropping, and an eerie soundscape serve to expand and incite the construction of imaginative possibilities. In relation to spatial imagination, Pallasmaa discusses the novel and our ability, when reading, to build all the settings of the story, as though they already existed in pre-formed realities. These imagined scenes are not experienced in two dimensions, as pictures, but in three dimensions and include both atmosphere and a sense of spatiality (239). Here, the clean, slick lines of the rooms, devoid of colour and personal clutter become personalised, yet also troubled through the sounds and shadows which appear in the photographs, adding ambiance and serving to highlight the pluralisation of space. As the piece progresses, these neat lines suffer disruption giving insight into the relations between bodies and across space. As Martin Heidegger notes, space and our occupation of space are not mutually exclusive but intertwined. Pallasmaa further reminds us that when we enter a space, space enters us and the experience is a reciprocal exchange and fusion of both subject and object (232).One image shows a table with several chairs neatly arranged around the outside. The distance between the chairs and the table is sufficient to imagine the presence of several bodies. The first image, though visually devoid of any living presence is layered with chattering sounds suggesting the presence of bodies. In the following image, the chairs have shifted position and there is a light haze, I envisage familiar social scenes where conversations with friends last long into the night. In the next image, one chair appears on top of the table, another lies tilted on the floor with raucous noise to accompany the image. Despite the absence of bodies, the minimal audio-visual provocations activate my spatial imagination and serve to suggest a correlation between physical behaviour and ambiance in everyday settings. As discussed in the previous paragraph, this highlights how space is far from a disinterested, or separate container for physical relations, rather, it underscores how social energy, sound and mood can build a dynamic presence within the built environment, one that is not in isolation but indeed in dialogue with surrounding structures. In a further scene, the seemingly fixed, stable nature of the models undergoes a sudden influx of materials as a barrage of tiny polystyrene balls appears. The image, combined with the sound suggests a large-scale disaster, or freak weather incident. The ambiguity created by the combination of sound and image indicates a hidden mobility beneath what is seen. Sound here does not announce the presence of an object, or indicate the taking place of a specific event, instead it acts as an invitation, as Voegelin notes, “not to confirm and preserve actuality but to explore possibilities” (Sonic 13). The use of sound which accompanies the image helps to underscore an exchange between the material and immaterial elements occurring within everyday life, leaving a gap for the listener-spectator to build their own narrative whilst also indicating further on goings in the depth of the visual. Image 3: The minimal audio-visual provocations serve to activate my spatial imagination. Image courtesy of the artists.The piece advances at a slow pace as each model is adjusted while lighting and objects are arranged. The previous image lingers on the projector screen, animated by the sound track which uses simple but evocative chords. This lulls me into an attentive, almost meditative state as I tune into and construct my own memories prompted by the spaces shown. The pace and rhythm that this establishes in Summerhall’s Old Lab creates a productive imaginative space. Böhme argues that atmosphere is a combination of both subjective and objective perceptions of space (16). Here, stimulated by the shifting arrangements Bouckaert and Salembier propose, I create short-lived geographies charting my lived experience and memories across a plurality of possible environments. As listener-spectator I am individually implicated as the producer of a series of invisible maps. The invitation to engage with the process of the work over 40-minutes as the building and dismantling of models and objects takes place draws attention to the sensorial flows and what Voegelin denotes as a “semantic materiality” (Sonic 53), one that might penetrate our sensibility and accompany us beyond the immediate timeframe of the work itself. The timeframe and rhythm of the piece encourages me, as listener-spectator to focus on the ambient sound track, not just as sound, but to consider the material realities of the here and now, to attend to vibrational milieus which operate beyond the surface of the visible. In doing so, I become aware of constructed actualities and of sound as a medium to get me beyond what is merely presented. ConclusionThe dynamic experiential potential of sound installations discussed from the perspective of a listener-spectator indicate how emotion is a key composite of spatial construction. Beyond the closed acoustic environments of audio-based performance works, aural space, physical proximity, and the importance of ambiance are foregrounded. Such intangible, ephemeral experiences can benefit from a writing practice that attends to these aesthetic concerns. By writing through both case studies from the position of listener-spectator, my lived experience of each work, manifested through attention to sensorial experience, have indicated how relations are built between bodies and across space. In Invisible Flock´s 105+dB sound featured as a social material binding listener-spectators to each other and catalysing a fictional relation to space. Here, sound formed temporal communities bringing bodies into contact to share in constructing and further shaping the parameters of a fictional event.In Atelier Bildraum’s Bildraum the construction of architectural models combined with ambient and live sound indicated a depth of engagement to the visual, one not confined to how things might appear on the surface. The seemingly given, stable nature of familiar environments can be questioned hinting at the presence of further layers within the vibrational or atmospheric properties operating across space that might bring new or alternative realities to the forefront.In both, the correlation between the environment and emotional impressions of bodies that occupy it emerged as key in underscoring and engaging in a dialogue between ambiance and lived experience.ReferencesBildraum, Atelier. Bildraum. Old Lab, Summer Hall, Edinburgh. 18 Aug. 2016.Böhme, Gernot, and Jean-Paul Thibaud (eds.). The Aesthetics of Atmospheres. 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