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Journal articles on the topic 'Thermal streams'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Mishra, Niti B., Michael J. Siepker, and Greg Simmons. "Applying High-Resolution Satellite and UAS Imagery for Detecting Coldwater Inputs in Temperate Streams of the Iowa Driftless Region." Remote Sensing 15, no. 18 (2023): 4445. http://dx.doi.org/10.3390/rs15184445.

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Coldwater streams are crucial habitats for many biota including Salmonidae and Cottidae species that are unable to tolerate warmer water temperatures. Accurate classification of coldwater streams is essential for their conservation, restoration, and management, especially in light of increasing human disturbance and climate change. Coldwater streams receive cooler groundwater inputs and, as a result, typically remain ice-free during the winter. Based on this empirical thermal evidence, we examined the potential of very high-resolution (VHR) satellite and uncrewed aerial system (UAS) imagery to

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Kristensen, P. B., E. A. Kristensen, T. Riis, et al. "Riparian forest as a management tool for moderating future thermal conditions of lowland temperate streams." Hydrology and Earth System Sciences Discussions 10, no. 5 (2013): 6081–106. http://dx.doi.org/10.5194/hessd-10-6081-2013.

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Abstract. Predictions of the future climate infer that stream water temperatures may increase in temperate lowland areas and that streams without riparian forest will be particularly prone to elevated stream water temperature. Planting of riparian forest is a potential mitigation measure to reduce water temperatures for the benefit of stream organisms. However, no studies have yet determined the length of a forested reach required to obtain a significant temperature decrease. To investigate this we measured the temperature in five small Danish lowland streams from June 2010 to July 2011, all s

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French, W. E., B. Vondracek, L. C. Ferrington, J. C. Finlay, and D. J. Dieterman. "Brown trout (Salmo trutta) growth and condition along a winter thermal gradient in temperate streams." Canadian Journal of Fisheries and Aquatic Sciences 74, no. 1 (2017): 56–64. http://dx.doi.org/10.1139/cjfas-2016-0005.

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Winter harshness and the degree to which it can impact stream-dwelling salmonid populations has received considerable attention from fisheries biologists, although some debate exists regarding the importance of winter severity for local populations. Groundwater input may buffer stream water temperature and benefit fish in buffered versus unbuffered streams. Overwinter growth and condition of individual brown trout were measured in 24 groundwater-dominated streams, and the relations between winter growth and condition to stream thermal regime (quantified by regressions of air and water temperat

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Bykanov, Serhii, Babak Tetiana Babak, and Roman Stotskyi. "THERMAL INTEGRATION OF COMPRESSION REFRIGERATION UNITS IN DAIRY FACILITIES." Bulletin of the National Technical University "KhPI". Series: Chemistry, Chemical Technology and Ecology, no. 1(5) (May 15, 2021): 92–98. http://dx.doi.org/10.20998/2079-0821.2021.01.14.

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The heat integration of an ammonia compression refrigeration unit, that is used in different dairy facilities, was carried out by the pinch analysis methods. The schematic diagram of such unit with a cooling capacity of 1000 kW was taken as a basis. The main cycle temperatures, refrigerant consumption and its specific heat capacity were calculated for a given refrigerating capacity. Based on these data, a stream table was formed, that included a hot stream of a refrigerant – ammonia – and also two cold streams: water for chemical water treatment and water for technology. The hot stream of ammo

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Pépino, Marc, Marco A. Rodríguez, and Pierre Magnan. "Incorporating lakes in stream fish habitat models: are we missing a key landscape attribute?" Canadian Journal of Fisheries and Aquatic Sciences 74, no. 5 (2017): 629–35. http://dx.doi.org/10.1139/cjfas-2016-0221.

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Although lakes and rivers are intimately connected, more effort is needed to develop conceptual approaches accounting for lake–stream interactions within the drainage network. Lakes can buffer the impacts of environmental variability in streams and facilitate stream fish recolonization processes. However, lakes have rarely been incorporated in habitat models for stream fish. We examine whether including the presence of lakes in habitat models can improve our understanding of brook trout (Salvelinus fontinalis) abundance in streams. We quantified brook trout relative abundance in 36 streams ove

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Curry, R. Allen, David A. Scruton, and Keith D. Clarke. "The thermal regimes of brook trout incubation habitats and evidence of changes during forestry operations." Canadian Journal of Forest Research 32, no. 7 (2002): 1200–1207. http://dx.doi.org/10.1139/x02-046.

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The thermal regimes in streambed substrates used by brook trout, Salvelinus fontinalis Mitchell, for incubation of embryos were examined in reference and treatment (0- and 20-m riparian buffer strips) streams in a clear-cut harvested, northern temperate forest of western Newfoundland. In these streams, incubation habitats (redds) were primarily composed of downwelling surface waters with variable but minor mixing of upwelling groundwater. The resulting incubation temperatures were cold (<1°C) and surface water temperatures were accurate predictors of redd temperatures. Both treatment stream

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Murphy, Robert D., John A. Hagan, Bradley P. Harris, Suresh A. Sethi, T. Scott Smeltz, and Felipe Restrepo. "Can Landsat Thermal Imagery and Environmental Data Accurately Estimate Water Temperatures in Small Streams?" Journal of Fish and Wildlife Management 12, no. 1 (2021): 12–26. http://dx.doi.org/10.3996/jfwm-20-048.

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Abstract The ability to monitor water temperature is important for assessing changes in riverine ecosystems resulting from climate warming. Direct in situ water temperature collection efforts provide point samples but are cost-prohibitive for characterizing stream temperatures across large spatial scales, especially for small, remote streams. In contrast, satellite thermal infrared imagery may provide a spatially extensive means of monitoring riverine water temperatures; however, researchers do not have a good understanding of the accuracy of these remotely sensed temperatures for small stream

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Mandelker, Nir, Daisuke Nagai, Han Aung, Avishai Dekel, Yuval Birnboim, and Frank C. van den Bosch. "Instability of supersonic cold streams feeding galaxies – IV. Survival of radiatively cooling streams." Monthly Notices of the Royal Astronomical Society 494, no. 2 (2020): 2641–63. http://dx.doi.org/10.1093/mnras/staa812.

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ABSTRACT We study the effects of Kelvin–Helmholtz Instability (KHI) on the cold streams that feed massive haloes at high redshift, generalizing our earlier results to include the effects of radiative cooling and heating from a UV background, using analytic models and high resolution idealized simulations. We currently do not consider self-shielding, thermal conduction, or gravity. A key parameter in determining the fate of the streams is the ratio of the cooling time in the turbulent mixing layer which forms between the stream and the background following the onset of the instability, $t_{\rm

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Hunter, Pierce, Colin Meyer, Brent Minchew, Marianne Haseloff, and Alan Rempel. "Thermal controls on ice stream shear margins." Journal of Glaciology 67, no. 263 (2021): 435–49. http://dx.doi.org/10.1017/jog.2020.118.

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AbstractIce stream discharge responds to a balance between gravity, basal friction and lateral drag. Appreciable viscous heating occurs in shear margins between ice streams and adjacent slow-moving ice ridges, altering the temperature-dependent viscosity distribution that connects lateral drag to marginal strain rates and ice stream velocity. Warmer ice deforms more easily and accommodates faster flow, whereas cold ice supplied from ice ridges drives advective cooling that counteracts viscous heating. Here, we present a two-dimensional (three velocity component), steady-state model designed to

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Rahel, Frank J., and Nathan P. Nibbelink. "Spatial patterns in relations among brown trout (Salmo trutta) distribution, summer air temperature, and stream size in Rocky Mountain streams." Canadian Journal of Fisheries and Aquatic Sciences 56, S1 (1999): 43–51. http://dx.doi.org/10.1139/f99-210.

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Stream size interacted with mean July air temperature to influence the distribution of brown trout (Salmo trutta) in southeastern Wyoming streams. The geographic range of brown trout was positively associated with mean July air temperatures of 19-22°C. Within this thermal zone, brown trout were more likely to occur in large streams (>4 m wetted width) than in small streams. We used a geographic information system to examine spatial patterns in the distribution of anomalous sites (i.e., sites predicted to have brown trout but which lacked this species). Sites that lacked brown trout but cont

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Parizek, Byron R., Richard B. Alley, and Christina L. Hulbe. "Subglacial thermal balance permits ongoing grounding-line retreat along the Siple Coast of West Antarctica." Annals of Glaciology 36 (2003): 251–56. http://dx.doi.org/10.3189/172756403781816167.

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AbstractChanges in the discharge of West Antarctic ice streams are of potential concern with respect to global sea level. The six relatively thin, fast-flowing Ross ice streams are of interest as low-slope end-members among Antarctic ice streams. Extensive research has demonstrated that these “rivers of ice” have a history of relatively high-frequency , asynchronous discharge variations with evolving lateral boundaries. Amidst this variability, a ∼1300 km grounding-line retreat has occurred since the Last Glacial Maximum. Numerical studies of Ice Stream D (Parizek and others, 2002) indicate th

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McGill, Lillian M., E. Ashley Steel, and Aimee H. Fullerton. "Empirical stream thermal sensitivity cluster on the landscape according to geology and climate." Hydrology and Earth System Sciences 28, no. 6 (2024): 1351–71. http://dx.doi.org/10.5194/hess-28-1351-2024.

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Abstract. Climate change is modifying river temperature regimes across the world. To apply management interventions in an effective and efficient fashion, it is critical to both understand the underlying processes causing stream warming and identify the streams most and least sensitive to environmental change. Empirical stream thermal sensitivity, defined as the change in water temperature with a single degree change in air temperature, is a useful tool to characterize historical stream temperature conditions and to predict how streams might respond to future climate warming. We measured air a

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Campbell, Mel, Donna Delparte, Matthew Belt, Zhongqi Chen, Christopher C. Caudill, and Trevor Caughlin. "Diel Variation in Summer Stream Temperature in an Idaho Desert Stream and Implications for Identifying Thermal Refuges." Climate 13, no. 3 (2025): 44. https://doi.org/10.3390/cli13030044.

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Thermal refuges in streams are essential for the survival of coldwater fish species such as Redband trout (Oncorhynchus mykiss) in landscapes with stressful or lethal stream temperatures. We utilized an uncrewed aerial system (UAS) mounted with thermal and natural color sensors to conduct hourly flights over a 24 h period in the desert stream Little Jacks Creek during late summer when temperatures were near seasonal maximums and streamflow was near seasonal minimums. We used fine-resolution imagery to map stream temperatures and characterize how our thermal sensor exhibits variability across a

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Snyder, Craig D., John A. Young, David P. Lemarié, and David R. Smith. "Influence of eastern hemlock (Tsuga canadensis) forests on aquatic invertebrate assemblages in headwater streams." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 2 (2002): 262–75. http://dx.doi.org/10.1139/f02-003.

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We conducted a comparative study in the Delaware Water Gap National Recreation Area to determine the potential long-term impacts of hemlock forest decline on stream benthic macroinvertebrate assemblages. Hemlock forests throughout eastern North America have been declining because of the hemlock woolly adelgid, an exotic insect pest. We found aquatic invertebrate community structure to be strongly correlated with forest composition. Streams draining hemlock forests supported significantly more total taxa than streams draining mixed hardwood forests, and over 8% of the taxa were strongly associa

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Wilch, Ellen, and Terence J. Hughes. "Calculating basal thermal zones beneath the Antarctic ice sheet." Journal of Glaciology 46, no. 153 (2000): 297–310. http://dx.doi.org/10.3189/172756500781832927.

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AbstractA procedure is presented for using a simple flowline model to calculate the fraction of the bed that is thawed beneath present-day ice sheets, and therefore for mapping thawed, frozen, melting and freezing basal thermal zones. The procedure is based on the proposition, easily demonstrated, that variations in surface slope along ice flowlines are due primarily to variations in bed topography and ice–bed coupling, where ice–bed coupling for sheet flow is represented by the basal thawed fraction. This procedure is then applied to the central flowlines of flow bands on the Antarctic ice sh

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16

Ahmad, Mateen, Waseem Saeed, and Khaqan Javed. "Temperature Distribution Analysis along the Length of Floating Head Multi Stream Heat Exchanger." International Journal of Chemical Engineering and Applications 12, no. 3 (2021): 17–21. http://dx.doi.org/10.18178/ijcea.2021.12.3.790.

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Heat transfer between two streams is common and simple and well established and perfectly commercialized. Normally, the exchanger that is used for this purpose is shell and tube heat exchanger but in some industrial production unit where more than one reactant is to be preheated or pre-cooled for chemical reaction and same as post heating and post cooling required of multiple streams at same or different temperatures, Problem that is associated with such type shell and tube heat exchanger is that it can’t handle the multiple stream and for handling multiple streams we required more number of e

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Tronstad, Lusha M., J. Joseph Giersch, Scott Hotaling, et al. "Assessing thermal tolerance of vulnerable alpine stream insects as part of a long-term monitoring project in the Teton Range, Wyoming." UW National Parks Service Research Station Annual Reports 41 (December 15, 2018): 98–104. http://dx.doi.org/10.13001/uwnpsrc.2018.5661.

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Alpine streams are predicted to decline as air temperatures warm and their water sources dry. Stream temperatures are expected to increase as glaciers and permanent snowfields decrease in size. For aquatic insects that are cold-adapted and restricted to small, high elevation streams fed by glaciers or snowfields, warmer water temperatures could be lethal. Conversely, less water in streams may increase the likelihood of insects freezing during winter months. We measured the critical thermal maximum (CTMAX) – the highest non-lethal temperature an insect can survive, and supercooling temperature

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18

Venslauskas, Kęstutis, Kęstutis Navickas, Marja Nappa, et al. "Energetic and Economic Evaluation of Zero-Waste Fish Co-Stream Processing." International Journal of Environmental Research and Public Health 18, no. 5 (2021): 2358. http://dx.doi.org/10.3390/ijerph18052358.

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This study evaluates the possibility of recovery of high-quality valuable fish oil and proteins from fish co-streams by traditional means or a combination of several technologies. A techno-economically feasible and sustainable zero-waste process is needed for full utilisation of this co-stream’s potential. This study aims to determine the energy efficiency and economic feasibility of four different zero-waste bio-refineries based on salmon filleting co-streams. The study covers four concepts: (I) biogas and fertiliser production from salmon co-streams, (II) fish silage production, (III) therma

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Stanimirović, Snežana, Samantha Hoffman, Carl Heiles, Kevin A. Douglas, Mary Putman, and Joshua E. G. Peek. "The many streams of the Magellanic Stream." Proceedings of the International Astronomical Union 4, S256 (2008): 129–34. http://dx.doi.org/10.1017/s1743921308028354.

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AbstractAs a part of the ongoing H i survey by the consortium for Galactic studies with the Arecibo L-band Feed Array (GALFA-HI), we have recently imaged the tip of the MS and found several long filamentary structures. This demonstrates that the northern portion of the MS, which has been interacting with the Galactic halo for a long time, is more extended than previously thought and in the form of highly organized H i structures. The observed filaments, and especially the kinematic dichotomy of H i clouds observed for the first time, agree with predictions by the Connors, Kawata & Gibson (

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20

Malard, Florian, Alain Mangin, Urs Uehlinger, and J. V. Ward. "Thermal heterogeneity in the hyporheic zone of a glacial floodplain." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 7 (2001): 1319–35. http://dx.doi.org/10.1139/f01-079.

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We examined the thermal regime of surface and hyporheic waters at three kryal sites and four krenal streams within the channel network of a glacial floodplain. Temperature was continuously measured for 1 year in the surface stream and at sediment depths of 30 and 80 cm. The vertical pattern of water temperature was strongly influenced by the direction and intensity of surface water groundwater exchanges. At sites characterized by strong downwelling of surface waters, the thermal regimes of surface and hyporheic waters were virtually identical. In contrast, inputs of groundwater substantially

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Shawky, Y., A. Nada, and F. Abdel haleem. "THERMAL CONCENTRATION IN LOW FLOW STREAMS." Egyptian Journal for Engineering Sciences and Technology 17, no. 1 (2014): 36–47. http://dx.doi.org/10.21608/eijest.2014.96845.

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22

Schütz, Stefan Andreas, John E. Brittain, and Leopold Füreder. "Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard." Polar Biology 45, no. 2 (2021): 285–96. http://dx.doi.org/10.1007/s00300-021-02987-1.

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AbstractThe fauna of streams in the High Arctic, dominated by chironomids, is shaped by extreme environmental conditions that represent the physiological limits for benthic invertebrates. Despite their ecological importance, little is known of chironomid life histories, development strategies and the key abiotic drivers limiting larval growth in High Arctic streams. We investigated the larval development and growth in three High Arctic rivers with contrasting water sources, thermal regimes and nutrient characteristics. Populations of the larvae of Diamesa bohemani (Goetghebuer 1932) and Diames

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Ebersole, Joseph L., William J. Liss, and Christopher A. Frissell. "Thermal heterogeneity, stream channel morphology, and salmonid abundance in northeastern Oregon streams." Canadian Journal of Fisheries and Aquatic Sciences 60, no. 10 (2003): 1266–80. http://dx.doi.org/10.1139/f03-107.

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Heterogeneity in stream water temperatures created by local influx of cooler subsurface waters into geomorphically complex stream channels was associated with increased abundance of rainbow trout (Oncorhynchus mykiss) and chinook salmon (Oncorhynchus tshawytscha) in northeastern Oregon. The addition of cold water patch frequency and area as explanatory variables in salmonid habitat models indicated that doubling of cold water patch frequency was associated with increases in rainbow trout and chinook salmon abundances of 31% and 59%, respectively. Doubling of cold water patch area was associate

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Fuller, Matthew R., Joseph L. Ebersole, Naomi E. Detenbeck, Rochelle Labiosa, Peter Leinenbach, and Christian E. Torgersen. "Integrating thermal infrared stream temperature imagery and spatial stream network models to understand natural spatial thermal variability in streams." Journal of Thermal Biology 100 (August 2021): 103028. http://dx.doi.org/10.1016/j.jtherbio.2021.103028.

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McCann, Erin L., Nicholas S. Johnson, and Kevin L. Pangle. "Corresponding long-term shifts in stream temperature and invasive fish migration." Canadian Journal of Fisheries and Aquatic Sciences 75, no. 5 (2018): 772–78. http://dx.doi.org/10.1139/cjfas-2017-0195.

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By investigating historic trapping records of invasive sea lamprey (Petromyzon marinus) throughout tributaries to the Laurentian Great Lakes, we found that upstream spawning migration timing was highly correlated with stream temperatures over large spatial and temporal scales. Furthermore, several streams in our study exceeded a critical spring thermal threshold (i.e., 15 °C) and experienced peak spawning migration up to 30 days earlier than in the 1980s, whereas others were relatively unchanged. Streams exhibiting warming trends and earlier migration were spatially clustered and generally fou

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Mauger, Sue, Rebecca Shaftel, Jason C. Leppi, and Daniel J. Rinella. "Summer temperature regimes in southcentral Alaska streams: watershed drivers of variation and potential implications for Pacific salmon." Canadian Journal of Fisheries and Aquatic Sciences 74, no. 5 (2017): 702–15. http://dx.doi.org/10.1139/cjfas-2016-0076.

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Climate is changing fastest in high-latitude regions, focusing our research on understanding rates and drivers of changing temperature regimes in southcentral Alaska streams and implications for salmon populations. We collected continuous water and air temperature data during open-water periods from 2008 to 2012 in 48 nonglacial salmon streams across the Cook Inlet basin spanning a range of watershed characteristics. The most important predictors of maximum temperatures, expressed as mean July temperature, maximum weekly average temperature, and maximum weekly maximum temperature (MWMT), were

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Arismendi, I., S. L. Johnson, and J. B. Dunham. "Technical Note: Higher-order statistical moments and a procedure that detects potentially anomalous years as two alternative methods describing alterations in continuous environmental data." Hydrology and Earth System Sciences 19, no. 3 (2015): 1169–80. http://dx.doi.org/10.5194/hess-19-1169-2015.

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Abstract. Statistics of central tendency and dispersion may not capture relevant or desired characteristics of the distribution of continuous phenomena and, thus, they may not adequately describe temporal patterns of change. Here, we present two methodological approaches that can help to identify temporal changes in environmental regimes. First, we use higher-order statistical moments (skewness and kurtosis) to examine potential changes of empirical distributions at decadal extents. Second, we adapt a statistical procedure combining a non-metric multidimensional scaling technique and higher de

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Arismendi, I., S. L. Johnson, and J. B. Dunham. "Higher statistical moments and an outlier detection technique as two alternative methods that capture long-term changes in continuous environmental data." Hydrology and Earth System Sciences Discussions 11, no. 5 (2014): 4729–51. http://dx.doi.org/10.5194/hessd-11-4729-2014.

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Abstract. Central tendency statistics may not capture relevant or desired characteristics about the variability of continuous phenomena and thus, they may not completely track temporal patterns of change. Here, we present two methodological approaches to identify long-term changes in environmental regimes. First, we use higher statistical moments (skewness and kurtosis) to examine potential changes of empirical distributions at decadal scale. Second, we adapt an outlier detection procedure combining a non-metric multidimensional scaling technique and higher density region plots to detect anoma

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Martí, Eugènia, Paula Fonollà, Daniel von Schiller, et al. "Variation in stream C, N and P uptake along an altitudinal gradient: a space-for-time analogue to assess potential impacts of climate change." Hydrology Research 40, no. 2-3 (2009): 123–37. http://dx.doi.org/10.2166/nh.2009.090.

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A space-for-time substitution approach was used to evaluate potential effects of climate change on stream nutrient uptake by examining the relationship between stream environmental parameters and carbon (C), nitrogen (N) and phosphorus (P) uptake along an altitudinal gradient. The study was carried out in 14 streams located in the Central Pyrenees (NE Spain) draining calcareous catchments that cover an altitudinal range of 700–2,100 m a.s.l. In these streams, uptake of inorganic (soluble reactive phosphorus (SRP), ammonium and nitrate) and organic (acetate and glycine) nutrients was estimated.

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Wilkerson, Ethel, John M. Hagan, Darlene Siegel, and Andrew A. Whitman. "The Effectiveness of Different Buffer Widths for Protecting Headwater Stream Temperature in Maine." Forest Science 52, no. 3 (2006): 221–31. http://dx.doi.org/10.1093/forestscience/52.3.221.

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Abstract We evaluated the effect of timber harvesting on summer water temperature in first-order headwater streams in western Maine. Fifteen streams were assigned to one of five treatments: (1) clearcutting with no stream buffer; (2) clearcutting with 11-m, partially harvested buffers, both sides; (3) clearcutting with 23-m, partially harvested buffers; (4) partial cuts with no designated buffer; and (5) unharvested controls. Over a 3-year period we measured summer water temperature hourly before and after harvesting, above and below the harvest zone. Streams without a buffer showed the greate

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MacDonald, Ryan J., Sarah Boon, James M. Byrne, Mike D. Robinson, and Joseph B. Rasmussen. "Potential future climate effects on mountain hydrology, stream temperature, and native salmonid life history." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 2 (2014): 189–202. http://dx.doi.org/10.1139/cjfas-2013-0221.

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Native salmonids of western North America are subject to many environmental pressures, most notably the effects of introduced species and environmental degradation. To better understand how native salmonids on the eastern slopes of the Canadian Rocky Mountains may respond to future changes in climate, we applied a process-based approach to hydrologic and stream temperature modelling. This study demonstrates that stream thermal regimes in western Alberta, Canada, may only warm during the summer period, while colder thermal regimes during spring, fall, and winter could result from response to ea

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Kohil, Ahmed, Hassan Farag, and Mona Ossman. "Mathematical modeling of a multi-stream brazed aluminum plate fin heat exchanger." Thermal Science 14, no. 1 (2010): 103–14. http://dx.doi.org/10.2298/tsci1001103k.

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The need for small size and lightweight heat exchangers in many applications has resulted in the development of many heat transfer surfaces. This type of heat exchanger is much more compact than can be practically realized with circular tubes. In this work a steady-state mathematical model that representing one of the plate fin heat exchangers enclosed in cold box of an ethylene plant has been developed. This model could evaluate the performance of the heat exchanger by predicting the outlet temperatures of the hot and cold streams when the inlet conditions are known. The model has been valida

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Hnytka, Sarah, Jordan Rosenfeld, and Eva C. Enders. "Determining the upper thermal tolerance of Athabasca Rainbow Trout (Oncorhynchus mykiss) across naturally varying stream temperatures." FACETS 10 (January 1, 2025): 1–11. https://doi.org/10.1139/facets-2023-0241.

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Stream temperature is a key driver of physiological function in ectothermic fish, and fish have clear upper and lower limits to thermal habitat use. Stream temperature increases from climate change are a major threat to coldwater taxa like Athabasca Rainbow Trout ( Oncorhynchus mykiss), listed as Endangered under Canada's Species at Risk Act. To better understand their vulnerability to climate change and prioritize recovery locations, Athabasca Rainbow Trout were collected in August 2021 from three streams in the upper Athabasca River, Alberta, Canada, across a gradient of thermal regimes rang

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Červenka, Bystrík, Michal Holubčík, Juraj Drga, and Milan Malcho. "Modular Spiral Heat Exchanger Thermal Modelling." Applied Sciences 12, no. 12 (2022): 5805. http://dx.doi.org/10.3390/app12125805.

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Spiral plate heat exchangers (SPHEs) are used in industrial applications due to their enhanced thermal performance and tolerance to a soiled stream. The coupling of several SPHEs in series might further improve performance in terms of the effectiveness parameter. In the present study, a compact connection of several SPHE modules is proposed and investigated. For this purpose, a numerical model for the prediction of the effectiveness parameter of a modular SPHE was developed. The model predicted a 2.9% increase in the maximal effectiveness for a two-module SPHE in comparison to a conventional s

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Haseloff, Marianne, Christian Schoof, and Olivier Gagliardini. "The role of subtemperate slip in thermally driven ice stream margin migration." Cryosphere 12, no. 8 (2018): 2545–68. http://dx.doi.org/10.5194/tc-12-2545-2018.

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Abstract. The amount of ice discharged by an ice stream depends on its width, and the widths of unconfined ice streams such as the Siple Coast ice streams in West Antarctica have been observed to evolve on decadal to centennial timescales. Thermally driven widening of ice streams provides a mechanism for this observed variability through melting of the frozen beds of adjacent ice ridges. This widening is driven by the heat dissipation in the ice stream margin, where strain rates are high, and at the bed of the ice ridge, where subtemperate sliding is possible. The inflow of cold ice from the n

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Quist, Michael C., Wayne A. Hubert, and Daniel J. Isaak. "Fish assemblage structure and relations with environmental conditions in a Rocky Mountain watershed." Canadian Journal of Zoology 82, no. 10 (2004): 1554–65. http://dx.doi.org/10.1139/z04-134.

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Fish and habitat were sampled from 110 reaches in the Salt River basin (Idaho and Wyoming) during 1996 and 1997 to assess patterns in fish assemblage structure across a Rocky Mountain watershed. We identified four distinct fish assemblages using cluster analysis: (1) allopatric cutthroat trout (Oncorhynchus clarki (Richardson, 1836)); (2) cutthroat trout – brook trout (Salvelinus fontinalis (Mitchell, 1814)) – Paiute sculpin (Cottus beldingi Eigenmann and Eigenmann, 1891); (3) cutthroat trout – brown trout (Salmo trutta L., 1758) – mottled sculpin (Cottus bairdi Girard, 1850); and (4) Cyprinid

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Chu, Cindy, Nicholas E. Jones, Nicholas E. Mandrak, Andrew R. Piggott, and Charles K. Minns. "The influence of air temperature, groundwater discharge, and climate change on the thermal diversity of stream fishes in southern Ontario watersheds." Canadian Journal of Fisheries and Aquatic Sciences 65, no. 2 (2008): 297–308. http://dx.doi.org/10.1139/f08-007.

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The availability of suitable thermal habitat for fishes in streams is influenced by several factors, including flow, channel morphology, riparian vegetation, and land use. This study examined the influence of air temperature and groundwater discharge, predictors of stream temperature, on the thermal diversity (cold-, cool-, and warm-water preferences) of stream fish communities in southern Ontario watersheds. Site-level fish sampling data were used to assess the thermal diversity of 43 quaternary watersheds using three metrics, the proportion of sites within a watershed having (i) cold-, (ii)

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Knight, Jasper, G. McCarron Stephen, and A. Marshall McCabe. "Landform modification by palaeo-ice streams in east-central Ireland." Annals of Glaciology 28 (1999): 161–67. http://dx.doi.org/10.3189/172756499781821616.

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AbstractIn eastern Ireland, subglacial bedforms including drumlins and Rogen moraines were modified by headward erosion along two ice streams which had overlapping flow tracks. The ice streams, which had tidewater termini, are dated by geochronometric and morphostratigraphic methods to <15.014 C kyr BP (Castleblaney ice stream) and ~13.814C kyr BP (Armagh ice stream). Bedforms along ice-stream tracks show a morphological continuum which reflects a down-ice increase in the degree of modification by ice-stream activity (i.e. resulting in unmodified →remoulded/overprinted →crosscut →streamline

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Tronstad, Lusha M., Scott Hotaling, Karen Jorgenson, et al. "Understanding food web structure in high-elevation streams of the Teton Range." UW-National Park Service Research Station Annual Reports 43 (December 15, 2020): 56–62. http://dx.doi.org/10.13001/uwnps.2020.8079.

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Climate change is dramatically altering high-elevation streams around the world through the recession of glaciers and other meltwater sources. Rapidly changing hydrological regimes imperil entire communities of mountain stream biodiversity. We have monitored high-elevation streams in the Teton Range since 2015, with a specific focus on understanding how hydrological source variation affects the susceptibility of downstream communities, and the stoneflies Zapada glacier and Lednia tetonica, to climate-induced impacts. We monitor streams fed by three sources – glaciers, snowfields, and subterran

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Bois, Paul, Jean-Nicolas Beisel, Alban Cairault, Nicolas Flipo, Corentin Leprince, and Agnès Rivière. "Water temperature dynamics in a headwater forest stream: Contrasting climatic, anthropic and geological conditions create thermal mosaic of aquatic habitats." PLOS ONE 18, no. 2 (2023): e0281096. http://dx.doi.org/10.1371/journal.pone.0281096.

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The thermal regime of streams is a relevant driver of their ecological functioning. As this regime is presently submitted to numerous alterations (among others, impoundments, and climate change), it seems important to study both their effects and potential recovery from the latter. Thus, we investigated the surface and hyporheic water temperature along a small headwater stream with contrasting environmental contexts: forest landscape, open grassland landscape without riparian vegetation, several artificial run-of-the-river impoundments and one discharge point of a by-pass impoundment. The main

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Warnock, Will G., and Joseph B. Rasmussen. "Abiotic and biotic factors associated with brook trout invasiveness into bull trout streams of the Canadian Rockies." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 6 (2013): 905–14. http://dx.doi.org/10.1139/cjfas-2012-0387.

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An information-theoretic approach was used to determine the association between brook trout (Salvelinus fontinalis) invasiveness and a suite of abiotic and biotic factors, measured at 80 sites from 51 streams in the Canadian Rockies. The streams selected had confirmed brook trout invasions and were identified as current or historical nursery habitat for native bull trout (Salvelinus confluentus). The biomass at most sites was strongly or completely dominated (95%–100%) by one species or the other, and sites were classified as having high brook trout invasiveness (>60% of the biomass of the

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Valoppi, Fabio, Yu-Jie Wang, Giulia Alt, Leena J. Peltonen, and Kirsi S. Mikkonen. "Valorization of Native Soluble and Insoluble Oat Side Streams for Stable Suspensions and Emulsions." Food and Bioprocess Technology 14, no. 4 (2021): 751–64. http://dx.doi.org/10.1007/s11947-021-02602-5.

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AbstractAmong different cereals, oat is becoming more popular due to its unique composition and health benefits. The increase in oat production is associated with an increase in related side streams, comprising unutilized biomass that is rich in valuable components, such as polysaccharides, proteins, and antioxidants. To valorize such biomass, it is fundamental that side streams enter back into the food production chain, in respect of the circular economy model. Here, we propose the use of soluble and insoluble oat-production side-stream in suspensions and emulsions, avoiding any further extra

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Cao, Zhiwei, Huihua Yang, Juan Zhao, Shuhong Guo, and Lingqiao Li. "Attention Fusion for One-Stage Multispectral Pedestrian Detection." Sensors 21, no. 12 (2021): 4184. http://dx.doi.org/10.3390/s21124184.

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Multispectral pedestrian detection, which consists of a color stream and thermal stream, is essential under conditions of insufficient illumination because the fusion of the two streams can provide complementary information for detecting pedestrians based on deep convolutional neural networks (CNNs). In this paper, we introduced and adapted a simple and efficient one-stage YOLOv4 to replace the current state-of-the-art two-stage fast-RCNN for multispectral pedestrian detection and to directly predict bounding boxes with confidence scores. To further improve the detection performance, we analyz

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Crialesi, Alfredo, Barbara Mazzarotta, Marco Santalucia, et al. "Exploiting Olive Mill Wastewater via Thermal Conversion of the Organic Matter into Gaseous Biofuel—A Case Study." Energies 15, no. 8 (2022): 2901. http://dx.doi.org/10.3390/en15082901.

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Olive oil is one excellence of the Italian food industry: around 300 kt yr−1 are produced, creating roughly the same amount of olive mill wastewater (OMW) to be disposed of. The present work describes a process to exploit OMW by converting its organic compounds to valuable gaseous biofuel. A sample OMW was characterized (COD, TOC, solids, and polyphenols) and submitted to membrane filtration tests to concentrate the organic compounds. Based on the results of the experiments, a treatment process was outlined: the retentate streams from microfiltration and ultrafiltration steps were fed to a cra

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Gadaleta, Giovanni, Sabino De Gisi, Andrea Sorrentino, et al. "Effect of Cellulose-Based Bioplastics on Current LDPE Recycling." Materials 16, no. 13 (2023): 4869. http://dx.doi.org/10.3390/ma16134869.

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The increased use of bioplastics in the market has led to their presence in municipal solid waste streams alongside traditional fossil-based polymers, particularly low-density polyethylene (LDPE), which bioplastics often end up mixed with. This study aimed to assess the impact of cellulose acetate plasticized with triacetin (CAT) on the mechanical recycling of LDPE. LDPE–CAT blends with varying CAT content (0%, 1%, 5%, 7.5%, and 10% by weight) were prepared by melt extrusion and analyzed using scanning electron microscopy, Fourier-transform infrared spectroscopy, thermal analysis (thermogravim

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Hughes, T. "Thermal convection and the origin of ice streams." Journal of Glaciology 55, no. 191 (2009): 524–36. http://dx.doi.org/10.3189/002214309788816722.

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AbstractIce streams are a fact of ice-sheet dynamics, draining up to 90% of the ice. Thermal convection in ice below the density inversion is a speculation. An attempt is made to meld the two in such a way that the speculation becomes an explanation for the fact.

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Danehy, Robert J., Christopher G. Colson, and Steven D. Duke. "Winter Longitudinal Thermal Regime in Four Mountain Streams." Northwest Science 84, no. 2 (2010): 151–58. http://dx.doi.org/10.3955/046.084.0204.

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Campbell, Emily Y., Jason B. Dunham, Gordon H. Reeves, and Steve M. Wondzell. "Phenology of hatching, emergence, and end-of-season body size in young-of-year coho salmon in thermally contrasting streams draining the Copper River Delta, Alaska." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 2 (2019): 185–91. http://dx.doi.org/10.1139/cjfas-2018-0003.

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Phenology can be linked to individual fitness, particularly in strongly seasonal environments where the timing of events has important consequences for growth, condition, and survival. We studied the phenology of coho salmon (Oncorhynchus kisutch) hatching and emergence in streams with contrasting thermal variability but in close geographic proximity. Following emergence, we tracked body sizes of cohorts of young-of-year fish until the end of the growing season. Hatch and emergence occurred at the same time among streams with marked variability in thermal regimes. We demonstrate that this can

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Engelhardt, Hermann. "Thermal regime and dynamics of the West Antarctic ice sheet." Annals of Glaciology 39 (2004): 85–92. http://dx.doi.org/10.3189/172756404781814203.

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AbstractThe temperature–depth profiles measured in 22 boreholes drilled on the West Antarctic ice sheet exhibit two distinctly different thermal states of its basal ice. The warm state shows on Siple Dome and on Whillans Ice Stream. A relatively colder state, found at the Unicorn, Kamb Ice Stream (former Ice Stream C) and Bindschadler Ice Stream (former Ice Stream D), has basal temperature gradients greater than 50 K km–1. A large block of cold ice stranded and frozen to the bed at the Unicorn and simultaneously much warmer ice existing only a few kilometers across the Dragon shear margin in f

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Pignotti, A. "Linear Matrix Operator Formalism for Basic Heat Exchanger Thermal Design." Journal of Heat Transfer 110, no. 2 (1988): 297–303. http://dx.doi.org/10.1115/1.3250483.

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The matrix formalism used for the thermal description of heat exchangers is extended to include streams with variable temperature distributions. In this approach, a heat exchanger is described by a temperature-independent matrix operator, which, acting on the inlet temperature distributions, generates the outlet ones. This formalism is particularly useful for the evaluation of the thermal effectiveness of complex heat exchanger configurations that can be broken into simple constitutive parts, linked to each other by unmixed streams. Applications to crossflow configurations of practical interes

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