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Artigos de revistas sobre o tema "Dune cord"

Autor: Grafiati

Publicado: 7 de junho de 2025

Última modificação: 2 de agosto de 2025

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1

Senni Rachida, De Belair Gérard, Abdelkrim Hacene, and Benabdeli Kheloufi. "Contribution to the phytoecological study of the biodiversity of the dune cord of El-Mesrane in the Wilaya (Province) of Djelfa in Algeria." South Asian Journal of Experimental Biology 11, no. 5 (2021): 588–99. http://dx.doi.org/10.38150/sajeb.11(5).p588-599.

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The various dune fixation actions began in 1982 in the study area (El Mesrane –Djelfa) at the level of the dune ridge with very interesting results, on the one hand for the control of desertification through the creation of a microclimate that ensures the ecological sustainability of fragile ecosystems. This work was carried out in the two projects (1) and (2) in the study area. The objective of the study is summarized in the floristic and ecological char-acterization of the vegetation subject to fixation and other left without fixa-tion or natural regeneration. These dunes have a poorer flori

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2

Hountondji, Babilas, Lambert K. Ayitchéhou, François De Paule Codo, and Martin P. Aina. "Innovative Method of Carrying Out Coastal Protection Works: Monitoring Coastal Risks and Soft Solutions in Benin." European Journal of Applied Sciences 13, no. 02 (2025): 176–83. https://doi.org/10.14738/aivp.1302.18325.

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Coastal erosion is a phenomenon of natural or anthropogenic origin that affects many coastal regions around the world. In response to its worsening over time, adaptation strategies have been developed: construction of dikes, operations to re-silt beaches, rock structures, etc. Among these strategies, the establishment of sand dunes is a territorial entity which fluctuates in space and time depending on natural (tide, erosion, sedimentation, etc.) and human factors (dams, etc.). The Beninese dune cord in the sector of the mouth of the Mono River in the commune of Grand Popo is in a state of lam

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Mehrtens, Björn, Oliver Lojek, Lukas Ahrenbeck, et al. "AN EXPERIMENTAL BENCHMARKING STUDY ON HYBRID COASTAL DUNE REINFORCEMENT VARIANTS." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 42. https://doi.org/10.9753/icce.v38.structures.42.

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Besides the natural protection of coastal dunes against storm surges (Mehrtens et al., 2023), blue-grey-hybrid dune structures play a key role in strengthening the protective mechanism of dunes against erosion, while imitating their natural landform appearance and function (Nordstrom 2019). Although artificial dunes with hybrid core enhancements are widespreadly implemented along many coasts worldwide (Winters et al., 2020), limited work addressed the effectiveness and potential enhancement of specific dune reinforcement strategies in a comparative fashion. An exception to this statement is th

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4

Ekaykin, A., L. Eberlein, V. Lipenkov, et al. "Non-climatic signal in ice core records: lessons from Antarctic mega-dunes." Cryosphere Discussions 9, no. 6 (2015): 6909–36. http://dx.doi.org/10.5194/tcd-9-6909-2015.

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Abstract. We present the results of glaciological investigations in the mega-dune area located 30 km to the east from Vostok Station (central East Antarctica) implemented during the 58th, 59th and 60th Russian Antarctic Expedition (January 2013–January 2015). Snow accumulation rate and isotope content (δD, δ18O and δ17O) were measured along the 2 km profile across the mega-dune ridge accompanied by precise GPS altitude measurements and GPR survey. It is shown that the spatial variability of snow accumulation and isotope content covaries with the surface slope. The accumulation rate regularly c

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Winters, Maria A., Margit Maple, and Timu W. Gallien. "OBSERVATIONS AND MODELING OF A HYBRID-DUNE LIVING SHORELINE OVERWASH EVENT AT A LONG-PERIOD SWELL DOMINATED BEACH." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 103. https://doi.org/10.9753/icce.v38.sediment.103.

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Sea level rise will significantly increase the need for building and upgrading coastal protection such as coastal dunes and living shorelines. (Morris et al., 2020). Even if emission goals are reached, most coastlines will experience an increase in mean sea levels and energetic wave events and storms (Morris et al., 2020). Coastal protection measures, such as dune restorations and engineered dunes, are crucial in adaptation efforts worldwide (Temmerman et al., 2013; Morris et al., 2022) and hold many advantages over traditional hard engineering structures such as sea walls. However, at sites w

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Manzolli, Rogério Portantiolo, Luana Carla Portz, Angela Fontán-Bouzas, Volney Junior Borges Bitencourt, and Javier Alcántara-Carrió. "Contribution of Reverse Dune Migration to Stabilization of a Transgressive Coastal Dune Field at Lagoa do Peixe National Park Dune Field (South of Brazil)." Remote Sensing 15, no. 14 (2023): 3470. http://dx.doi.org/10.3390/rs15143470.

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Coastal dunes that transgress typically move landward, while their reverse movement is not well understood. The article discusses the study of barchan and barchanoid dunes in the Lagoa do Peixe National Park in the coastal plain of Rio Grande do Sul, Brazil. The aim of the study is to analyze seasonal patterns and long-term trends in the direction and migration rates of these dunes, which can pose a threat to the lagoon if they invade its space. The crest migration of 12 dunes was monitored by satellite images between July 2003 and December 2018, and DGPS topographic surveys were performed on

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Maximiliano-Cordova, Carmelo, Rodolfo Silva, Edgar Mendoza, Valeria Chávez, M. Luisa Martínez, and Rusty A. Feagin. "Morphological Performance of Vegetated and Non-Vegetated Coastal Dunes with Rocky and Geotextile Tube Cores under Storm Conditions." Journal of Marine Science and Engineering 11, no. 11 (2023): 2061. http://dx.doi.org/10.3390/jmse11112061.

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Coastal dune restoration projects are increasingly seen as a means of protecting the coast against storms, especially with the use of natural (plants), artificial (geotextile tube cores) and hybrid (plants and geotextile tube) elements. As geotextile tube cores have been found to negatively affect dune and beach natural morphodynamics, rocky cores are thus seen as a potential alternative. We carried out laboratory experiments to compare the performance of dunes with rocky cores, geotextile cores, and both types when coupled with planted vegetation. We investigated these elements in the context

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Razjigaeva, N. G., L. A. Ganzey, Kh A. Arslanov, and N. F. Pshenichnikova. "Coastal dunes of Urup Island (Kuril Islands, North-Western Pacific): palaeoclimatic and environmental archive." Geosystems of Transition Zones 6, no. 2 (2022): 100–113. http://dx.doi.org/10.30730/gtrz.2022.6.2.100-113.

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The Late Holocene phases of aeolian processes have been reconstructed on the basis of dune fields construction. The palaeoenvironmental studies were targeted to following problems: 1) to determine the periods of higher and lower activity of aeolian processes; 2) to establish the age of aeolian deposits and buried soils; 3) to retrace the development of coastal landscapes. The age was determined by radiocarbon dating of paleosols and tephrostratigraphy. The correlation of tephra was performed using data on the volcanic glass chemical composition. The dunes formed during the cooling accompanied

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Putri, Latifa Melani, and Pramaditya Wicaksono. "MAPPING OF LAND USE CHANGES IN THE CORE ZONE OF PARANGTRITIS SAND DUNES USING OBIA METHOD 2015-2020." JURNAL GEOGRAFI 13, no. 1 (2021): 109. http://dx.doi.org/10.24114/jg.v13i1.21465.

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Indonesia has many types of unique and rare landforms, one of which is sand dunes, which is located in Parangtritis. Sand dune has the main function as a conservation area, natural wall for the tsunami disaster, water catchment area, and habitat for sand dune flora and fauna. However, the existence of sand dunes is currently threatened with extinction due to the decrease in their area, which is caused by changes in land use. Every year, the land use in the Parangtritis sand dune changes. Therefore, it is important to map land use changes to determine the changes that occur in the sand dune cor

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Van Dam, R. L. "Internal structure and development of an aeolian river dune in The Netherlands, using 3-D interpretation of ground-penetrating radar data." Netherlands Journal of Geosciences - Geologie en Mijnbouw 81, no. 1 (2002): 27–37. http://dx.doi.org/10.1017/s0016774600020540.

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AbstractGround-penetrating radar data from a regular grid are used to study the internal structure and development of a 9-m high aeolian river dune in the Dutch Rhine-Meuse delta. The purpose of this investigation was to image the internal sedimentary structures to better understand the development of these aeolian river dunes. Three radar facies can be recognised in the GPR sections. Radar facies 1 has a maximum thickness of 5 to 6 m and is characterised by dipping, parallel reflections with a maximum length of at least 20 m. The reflections from perpendicular sections, analysed using closed-

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11

Marin, Pierre, and Louise Filion. "Recent Dynamics of Subarctic Dunes as Determined by Tree-Ring Analysis of White Spruce, Hudson Bay, Québec." Quaternary Research 38, no. 3 (1992): 316–30. http://dx.doi.org/10.1016/0033-5894(92)90041-g.

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AbstractThe radial-growth patterns of white spruce were studied on a number of trees growing in subarctic dunes along the eastern coast of Hudson Bay to calculate the rates of accumulation, erosion, and migration of cold-climate sand dunes. The average rate of sand accumulation in sheltered dunes (forest sites) was 2.5 to 3.3 cm/yr, which is two to three times lower than in highly exposed dunes with a rate of sedimentation of 7.65 cm/yr. The average erosion rate was 1.4–1.7 cm/yr, about two times lower than the accumulation rate. The migration rate of sheltered dunes was 18 to 30 cm/yr, three

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Amin, Rajan, Tim Wacher, Tom Bruce, and Chris Barichievy. "The status and ecology of the sand cat in the Uruq Bani Ma’arid Protected Area, Empty Quarter of Saudi Arabia." Mammalia 85, no. 3 (2021): 220–26. http://dx.doi.org/10.1515/mammalia-2020-0031.

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Abstract The sand cat is one of the world’s least studied small cats. Our camera-trap survey, one of the largest undertaken in a desert system, generated over 1500 images of the species across 100 camera-traps distributed systematically over the 2400 km2 core area of the Uruq Bani Ma’arid Protected Area of the Empty Quarter, Saudi Arabia. The study revealed a much more significant and widespread sand cat population in the ecosystem than previously understood. Sand cats were detected across one-third of the core area in all major habitats, comprising escarpment plateau, sand dunes and interduna

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Ekaykin, Alexey, Lutz Eberlein, Vladimir Lipenkov, et al. "Non-climatic signal in ice core records: lessons from Antarctic megadunes." Cryosphere 10, no. 3 (2016): 1217–27. http://dx.doi.org/10.5194/tc-10-1217-2016.

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Abstract. We present the results of glaciological investigations in the megadune area located 30 km to the east of Vostok Station (central East Antarctica) implemented during the 58th, 59th and 60th Russian Antarctic Expedition (January 2013–2015). Snow accumulation rate and isotope content (δD, δ18O and δ17O) were measured along the 2 km profile across the megadune ridge accompanied by precise GPS altitude measurements and ground penetrating radar (GPR) survey. It is shown that the spatial variability of snow accumulation and isotope content covaries with the surface slope. The accumulation r

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Tudor, Mihaela, Ana Ramos-Pereira, and de Freitas Joana Gaspar. "CLIMATE VARIABILITY AND ANTHROPOGENIC ACTIONS AS DRIVERS FOR AEOLIAN ACTIVITY DURING THE LAST MILLENNIUM IN SOUTH-WESTERN EUROPE: Um caso de estudo da costa portuguesa." Finisterra 56, no. 118 (2021): 25–50. https://doi.org/10.18055/Finis21158.

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The building of dunes and sand drifts along the European coastline are generally related to climatic variability and sea-level fluctuation. The last phase of dunes formation in south-western Europe coincides with the Little Ice Age (LIA) period characte- rized by pronounced climate variability. Historical sources retrieved from archives also report sand-drift events along the Portuguese coast. The sand invaded many agricultural fields, and settlements, forcing the inhabitants to move elsewhere. The article explores the temporal relationships between sand drift occurrences and climate, as a pri

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Janecka, Karolina, Sandra Metslaid, Marek Metslaid, Jill E. Harvey, and Martin Wilmking. "Short-Term Effects of Droughts and Cold Winters on the Growth of Scots Pine at Coastal Sand Dunes around the South Baltic Sea." Forests 13, no. 3 (2022): 477. http://dx.doi.org/10.3390/f13030477.

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Coastal dunes near the Baltic Sea are often stabilized by Scots pine forests and are characterized by a mild climate. These ecosystems are affected by water shortages and might be influenced by climate extremes. Considering future climate change, utilizing tree rings could help assess the role of climate extremes on coastal forest growth. We used superposed epoch analysis to study Scots pine responses to droughts and cold winters, with focus on frequency, timing, and duration. We measured ring widths (RW) and latewood blue intensity (LBI) on samples extracted from trees growing at dune ridge a

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Rivas-Rodríguez, Lourdes, Christian Fernández-Diez, Arian Castro-Reyes, et al. "Rehabilitación funcional de dunas en la playa Guanabo, Playas del Este de la Habana, Cuba." Revista de Investigaciones Marinas 45, no. 1 (2025): e-10914. https://doi.org/10.5281/zenodo.14826786.

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La playa Guanabo, ubicada en la ensenada de Sibarimar, La Habana, Cuba, es un sector costero que ha estado afectado, durante décadas, por el proceso de la erosión y actualmente presenta una crítica situación ambiental. El área de estudio tiene una longitud aproximada de 1 974 m y se extiende entre las calles 462 y 500, perpendiculares a dicha playa. El principal objetivo del presente trabajo es mostrar el estado actual de este tramo litoral y ofrecer los parámetros de diseño para la conformación de un cordón dunar único, ten

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Collins, J. A., A. Govin, S. Mulitza, et al. "Abrupt shifts of the Sahara–Sahel boundary during Heinrich stadials." Climate of the Past 9, no. 3 (2013): 1181–91. http://dx.doi.org/10.5194/cp-9-1181-2013.

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Abstract. Relict dune fields that are found as far south as 14° N in the modern-day African Sahel are testament to equatorward expansions of the Sahara desert during the Late Pleistocene. However, the discontinuous nature of dune records means that abrupt millennial-timescale climate events are not always resolved. High-resolution marine core studies have identified Heinrich stadials as the dustiest periods of the last glacial in West Africa although the spatial evolution of dust export on millennial timescales has so far not been investigated. We use the major-element composition of four high

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Wang, Xianyan, Junfei Ma, Shuangwen Yi, Jef Vandenberghe, Yan Dai, and Huayu Lu. "Interaction of fluvial and eolian sedimentation processes, and response to climate change since the last glacial in a semiarid environment along the Yellow River." Quaternary Research 91, no. 2 (2018): 570–83. http://dx.doi.org/10.1017/qua.2018.22.

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AbstractInteractions of fluvial and eolian processes are prominent in dryland environments and can significantly change Earth surface morphology. Here, we report on sediment records of eolian and fluvial interactions since the last glacial period, in the semiarid area of northwest China, at the limit of the Southeast Asian monsoon. Sediment sequences of last glacial and Holocene terraces of the Yellow River are composed of channel gravels, overlain by flood sands, eolian dunes, and flood loams. These sequences, dated by optically stimulated luminescence, record interlinks between fluvial and e

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Fisher, Timothy G., Jennifer Horton, Kenneth Lepper, and Henry Loope. "Aeolian activity during Late Glacial time, with an example from Mongo, Indiana, USA." Canadian Journal of Earth Sciences 56, no. 2 (2019): 175–82. http://dx.doi.org/10.1139/cjes-2018-0127.

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The last aeolian activity of a significant number of inland sand dunes in the southern Great Lakes region (SGLR) was several thousands of years after deglaciation. At Mongo, Indiana, a field of parabolic sand dunes with a variety of morphologies are within the channel bottom of the Pigeon River meltwater channel, with some dunes having climbed up the channel wall onto the adjacent upland surface. The optically stimulated luminescence (OSL) samples from the channel-bottom dunes have a mean age of 14.2 ± 1.6 ka (n = 2) and the OSL samples from upland dunes have a mean age of 12.3 ± 1.6 ka (n = 4

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Rey, Wilmer, Paulo Salles, Alec Torres-Freyermuth, et al. "Spatiotemporal Storm Impact on the Northern Yucatan Coast during Hurricanes and Central American Cold Surge Events." Journal of Marine Science and Engineering 8, no. 1 (2019): 2. http://dx.doi.org/10.3390/jmse8010002.

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We investigate the storm impact associated with historical events in the northern Yucatan Peninsula. The study area is prone to coastal flooding due to both its geographical location and low-lying areas. Extreme events associated with tropical cyclones and Central American cold surge (CACS; locally known as Nortes) are ubiquitous in this region, and coastal development in the study area has exacerbated the erosion of the sand beach-dune system. This study aims to assess the impact on the northern coast of Yucatan associated with different types of storms and to investigate the role of the dune

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Loope, Henry M., Walter L. Loope, Ronald J. Goble, Timothy G. Fisher, Harry M. Jol, and J. C. Seong. "Early Holocene dune activity linked with final destruction of Glacial Lake Minong, eastern Upper Michigan, USA." Quaternary Research 74, no. 1 (2010): 73–81. http://dx.doi.org/10.1016/j.yqres.2010.03.006.

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AbstractThe early Holocene final drainage of glacial Lake Minong is documented by 21 OSL ages on quartz sand from parabolic dunes and littoral terraces and one radiocarbon age from a lake sediment core adjacent to mapped paleoshorelines in interior eastern Upper Michigan. We employ a simple model wherein lake-level decline exposes unvegetated littoral sediment to deflation, resulting in dune building. Dunes formed subsequent to lake-level decline prior to stabilization by vegetation and provide minimum ages for lake-level decline. Optical ages range from 10.3 to 7.7 ka; 15 ages on dunes adjace

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Buynevich, Ilya V., Hannes Tõnisson, Alar Rosentau, et al. "Rapid Magnetic Susceptibility Characterization of Coastal Morphosedimentary Units at Two Insular Strandplains in Estonia." Journal of Marine Science and Engineering 11, no. 2 (2023): 232. http://dx.doi.org/10.3390/jmse11020232.

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Coastal archives of changing hydrometeorological conditions include mineralogical anomalies, such as heavy-mineral concentrations (HMCs) of variable thickness and intensity, which contain varying ferrimagnetic (e.g., magnetite) fractions. As an effective alternative to laborious mineralogical and granulometric analysis, we present the first set of bulk-volume low-field magnetic susceptibility (MS) databases from beach and dune lithosomes in the Western Estonian archipelago: Harilaid cuspate foreland (westernmost Saaremaa Island) and Tahkuna strandplain (northernmost Hiiumaa Island). Readings w

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Maggi, Brian, Christopher Baxter, Aaron Bradshaw, et al. "DEVELOPMENT OF FRAGILITY CURVES FOR REINFORCED DUNES." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 10. http://dx.doi.org/10.9753/icce.v36.structures.10.

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The objective of this paper is to present the results of on-going field studies to assess the performance of geotextile sand-filled container (GSC) reinforced dunes and to develop probabilistic fragility curves for a range of damage states to these structures. While numerous lab experiments and numerical models have been developed to predict the hydraulic stability of coastal revetments made of GSCs, there has been limited in situ validation of these systems, especially when they are used to reinforce the core of a natural system (Dassanayake and Oumeraci, 2012). Furthermore, the formulas and

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Sharma, Varun, Louise Braud, and Michael Lehning. "Understanding snow bedform formation by adding sintering to a cellular automata model." Cryosphere 13, no. 12 (2019): 3239–60. http://dx.doi.org/10.5194/tc-13-3239-2019.

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Abstract. Cellular-automata-based modelling for simulating snow bedforms and snow deposition is introduced in this study. The well-known ReSCAL model, previously used for sand bedforms, is adapted for this purpose by implementing a simple sintering mechanism. The effect of sintering is first explored for solitary barchan dunes of different sizes and flow conditions. Three types of behaviour are observed: small barchans continue their motion without any perceptible difference while large barchans sinter immediately. Barchans of intermediate size split, leaving behind a sintered core and a small

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Jacobs, Kimberly C., Sherilyn C. Fritz, and James B. Swinehart. "Lacustrine evidence for moisture changes in the Nebraska Sand Hills during Marine Isotope Stage 3." Quaternary Research 67, no. 2 (2007): 246–54. http://dx.doi.org/10.1016/j.yqres.2006.12.001.

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AbstractIn the central Great Plains of North America, loess stratigraphy suggests that climate during the late Pleistocene was cold and dry. However, this record is discontinuous, and there are few other records of late-Pleistocene conditions. Cobb Basin, located on the northern edge of the Nebraska Sand Hills, contains lacustrine sediments deposited during Marine Isotope Stage 3, beginning approximately 45,000 cal yr BP and continuing for at least 10,000 yr. The lake was formed by a dune dam blockage on the ancient Niobrara River, and its deposits contain a diatom record that indicates change

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Daniels, Roger E., Anthony F. Harrison, John A. Parkinson, and Graham Hall. "BURIAL AND BREAKDOWN OF OIL IN COASTAL DUNE SYSTEMS." International Oil Spill Conference Proceedings 1995, no. 1 (1995): 577–80. http://dx.doi.org/10.7901/2169-3358-1995-1-577.

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ABSTRACT In 1992 and 1994, sites where oiled beach material, resulting from tanker spills at sea, had been buried in sand dunes in 1978 were located. Analysis of samples from one site (Hemsby, Norfolk) was inconclusive but samples from Pendine in south Wales contained small quantities of hydrocarbon residues and bacterial populations capable of metabolizing catechol. Gas sampling also showed elevated concentrations of volatile hydrocarbons and carbon dioxide within the deposit compared with controls in adjacent sand dunes. Following the beaching of heavy fuel oil at Pendine in January 1994, oi

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Vitti, Stefano, Elisa Pellegrini, Valentino Casolo, Giacomo Trotta, and Francesco Boscutti. "Contrasting responses of native and alien plant species to soil properties shed new light on the invasion of dune systems." Journal of Plant Ecology 13, no. 6 (2020): 667–75. http://dx.doi.org/10.1093/jpe/rtaa052.

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Abstract Aims Among terrestrial ecosystems, coastal sandy dunes are particularly prone to alien plant invasion. Many studies related the invasion of dune habitats to anthropic causes, but less is known about the role of soil properties and plant traits in plant invasion. In this study, we tested the relationships between soil features and alien plant invasion in dune systems, focusing on the interplay between soil nutrients, soil salinity and plant functional traits. Methods Study sites were sandy barrier islands of the Marano and Grado lagoon (northern Adriatic Sea). One hundred plots (4 m ×

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Booker, Simone, Stephen Hubbard, Chelsea Rommens, and John-Paul Zonneveld. "Facies associations and depositional environments of a mixed siliciclastic-carbonate marginal marine succession: The Lower Carnian (Upper Triassic) middle Charlie Lake Formation, Kobes-Blueberry area, British Columbia, Canada." Bulletin of Canadian Petroleum Geology 67, no. 2 (2019): 117–39. http://dx.doi.org/10.35767/gscpgbull.67.2.117.

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Abstract The Upper Triassic (Carnian) Charlie Lake Formation in northeastern British Columbia, Canada is a heterolithic mixed siliciclastic-carbonate succession of dolomite dolomitic siltstone, well-sorted sandstone, bioclastic sandstone, and anhydrite. This succession is unusual in that it records the only significant non-marine interval in the Triassic of the Western Canadian Sedimentary Basin. In the Kobes-Altares-Blueberry area, moderately abundant core are available through the middle members of the Charlie Lake Formation. All available core were analyzed in order to interpret the deposit

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Ruz, Marie-Hélène, and Michel Allard. "COASTAL DUNE DEVELOPMENT IN COLD-CLIMATE ENVIRONMENTS." Physical Geography 15, no. 4 (1994): 372–80. http://dx.doi.org/10.1080/02723646.1994.10642523.

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Collins, J. A., A. Govin, S. Mulitza, et al. "Abrupt shifts of the Sahara-Sahel boundary during Heinrich Stadials." Climate of the Past Discussions 9, no. 1 (2013): 119–42. http://dx.doi.org/10.5194/cpd-9-119-2013.

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Abstract. Relict dune fields that are found at 14° N in the modern-day African Sahel are testament to equatorward expansions of the Sahara desert during the late Pleistocene. However, difficulties of dating dune formation mean that abrupt millennial-scale climate events are not always resolved in these records. High-resolution marine core studies have identified Heinrich Stadials as the dustiest periods of the last glacial, although no studies have mapped the spatio-temporal evolution of dust export from West Africa. We use the major-element composition of four marine sediment cores to reconst

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Fisher, Timothy, Joseph Daniel Blockland, Brad Anderson, David Eugene Krantz, Donald John Stierman, and Ronald Goble. "Evidence of Sequence and Age of Ancestral Lake Erie Lake-Levels, Northwest Ohio." Ohio Journal of Science 115, no. 2 (2015): 62. http://dx.doi.org/10.18061/ojs.v115i2.4614.

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While the general scheme of the retreat of the Late Wisconsinan glacier from the ancestral Lake Erie basin is understood, the sequence and timing of those movements that caused lake-level changes are not well documented. Ground penetrating radar (GPR), electrical resistivity (ER), and optically stimulated luminescence (OSL) techniques were used to analyze beach and sand dune formations in the Wauseon area in northwest Ohio. The beaches showed no evidence of being flooded after deposition. Thirteen (13) new OSL ages revealed a short time of approximately 1000 years (16.9–15.9 ka) for formation

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Abed Abud, A., B. Abi, R. Acciarri, et al. "DUNE Phase II: scientific opportunities, detector concepts, technological solutions." Journal of Instrumentation 19, no. 12 (2024): P12005. https://doi.org/10.1088/1748-0221/19/12/p12005.

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Abstract The international collaboration designing and constructing the Deep Underground Neutrino Experiment (DUNE) at the Long-Baseline Neutrino Facility (LBNF) has developed a two-phase strategy toward the implementation of this leading-edge, large-scale science project. The 2023 report of the US Particle Physics Project Prioritization Panel (P5) reaffirmed this vision and strongly endorsed DUNE Phase I and Phase II, as did the European Strategy for Particle Physics. While the construction of the DUNE Phase I is well underway, this White Paper focuses on DUNE Phase II planning. DUNE Phase-II

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Gao, S. "Cold Readout Electronics for Liquid Argon TPCs in the DUNE experiment." Journal of Physics: Conference Series 2374, no. 1 (2022): 012075. http://dx.doi.org/10.1088/1742-6596/2374/1/012075.

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The liquid Argon TPC (LArTPC) technology is used in DUNE, the Deep Underground Neutrino Experiment, to achieve its goals as the leading-edge international experiment for neutrino science and proton decay studies. The first 10 k-ton DUNE far detector module will employ wired-based anode planes with cold readout electronics (CE) installed inside the cryostat. The CE developed for cryogenic temperatures (77-89K) operation is an optimal solution that achieves excellent noise performance and decouples the electrode and cryostat design from the readout design. This paper reviews the experience of Pr

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Seifert, Christopher L., Randel Tom Cox, Steven L. Forman, Tom L. Foti, Thad A. Wasklewicz, and Andrew T. McColgan. "Relict nebkhas (pimple mounds) record prolonged late Holocene drought in the forested region of south-central United States." Quaternary Research 71, no. 3 (2009): 329–39. http://dx.doi.org/10.1016/j.yqres.2009.01.006.

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AbstractThe origin and significance of pimple mounds (low, elliptical to circular dune-like features found across much of the south-central United States) have been debated for nearly two centuries. We cored pimple mounds at four sites spanning the Ozark Plateau, Arkansas River Valley, and Gulf of Mexico Coastal Plain and found that these mounds have a regionally consistent textural asymmetry such that there is a significant excess of coarse-grained sediment within their northwest flanks. We interpret this asymmetry as evidence of an eolian depositional origin of these mounds and conclude they

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Tandong, Yao, and L. G. Thompson. "Trends and features of climatic changes in the past 5000 years recorded by the Dunde ice core." Annals of Glaciology 16 (1992): 21–24. http://dx.doi.org/10.3189/1992aog16-1-21-24.

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Α δ18O record from Dunde Ice Cap, located in the Qilian mountains on the northeastern margin of the Tibetan Plateau, has been analyzed and interpreted. With an ice temperature of –7.3°C at a depth of 10 m and –4.7°C at the bottom of the ice cap, and an accumulation rate of 400 mm a−1, the Dunde core has provided interesting results. The upper part of this core, core D-l, can be easily dated by a combination of δ18O, microparticle concentration and conductivity. It can also be dated as far back as 4550 BP by counting dust layers in ice. Based on the time scale established by the above methods a

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Tandong, Yao, and L. G. Thompson. "Trends and features of climatic changes in the past 5000 years recorded by the Dunde ice core." Annals of Glaciology 16 (1992): 21–24. http://dx.doi.org/10.1017/s0260305500004766.

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Α δ18O record from Dunde Ice Cap, located in the Qilian mountains on the northeastern margin of the Tibetan Plateau, has been analyzed and interpreted. With an ice temperature of –7.3°C at a depth of 10 m and –4.7°C at the bottom of the ice cap, and an accumulation rate of 400 mm a−1, the Dunde core has provided interesting results. The upper part of this core, core D-l, can be easily dated by a combination of δ18O, microparticle concentration and conductivity. It can also be dated as far back as 4550 BP by counting dust layers in ice. Based on the time scale established by the above methods a

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37

Tsoar, Haim, Noam Levin, Naomi Porat, et al. "The effect of climate change on the mobility and stability of coastal sand dunes in Ceará State (NE Brazil)." Quaternary Research 71, no. 2 (2009): 217–26. http://dx.doi.org/10.1016/j.yqres.2008.12.001.

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AbstractThe coast of Ceará State in NE Brazil is covered by vast fields of active and stabilized coastal sand dunes. Its tropical climate is characterized by two seasons, wet and dry, with wind intensity determined by the meridional shift of the Intertropical Convergence Zone. The wind power is negatively correlated with precipitation, and precipitation is negatively correlated with the difference between sea surface temperatures of the tropical Atlantic north and south of the equator. We present a model suggesting that during the Late Pleistocene wind power determined the mobility and stabili

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Muchabveyo, Brenda, and Jimoh Amzat. "Medical Pluralism and Cultural Practices Associated with Umbilical Cord-Care in Rural Communities in Zimbabwe." Nigerian Journal of Sociology and Anthropology 20, no. 2 (2022): 1–18. http://dx.doi.org/10.36108/njsa/2202.02.0210.

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This study explores how Traditional Birth Attendants (TBAs) in rural Zimbabwe care for babies’ umbilical cords, examining cultural practices associated with umbilical cord care. This study relies on a qualitative interpretive approach, guided by symbolic interactionist theory, involving 16 Key Informant Interviews (KIIs). The respondents were de jure (trained) and de facto (untrained) TBAs in Mawadza village in Mutasa District in Manicaland, Zimbabwe. The data from the KIIs were analysed using the framework analysis method. Umbilical cord care is embedded in cultural practices and symbolic mea

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Wang, Shulin, and Fujiang Hou. "Short-term study on the yak dung seed bank on the Qinghai-Tibetan Plateau: effects of grazing season, seed characteristics and forage preferences." Plant and Soil 465, no. 1-2 (2021): 367–83. http://dx.doi.org/10.1007/s11104-021-05009-5.

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Abstract Aims Viable seeds in herbivore dung constitute the dung seed bank, and the contribution of livestock dung to this seed bank in grazing pastures is often overlooked. Grazing season (warm and cold), seed characteristics (size and shape), and forage preference are the main factors that affect the size and composition of the dung seed bank and ultimately affect grassland ecology. However, how these three factors interact is unclear. Methods We collected yak dung as well as seeds of the common plant species from warm- and cold-season alpine meadows in northeastern Qinghai-Tibetan Plateau,

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Nagakura, Hiroki. "Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors." Monthly Notices of the Royal Astronomical Society 500, no. 1 (2020): 319–32. http://dx.doi.org/10.1093/mnras/staa3287.

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ABSTRACT We present a new method by which to retrieve energy spectrum for all falvours of neutrinos from core-collapse supernova (CCSN). In the retrieval process, we do not assume any analytic formulas to express the energy spectrum of neutrinos but rather take a direct way of spectrum reconstruction from the observed data; the singular value decomposition algorithm with a newly developed adaptive energy-gridding technique is adopted. We employ three independent reaction channels having different flavour sensitivity to neutrinos. Two reaction channels, inverse beta decay on proton and elastic

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Hough, Sigmund. "Michael Dunn, John Lavelle: Sexuality After Spinal Cord Injury." Sexuality and Disability 27, no. 3 (2009): 181–82. http://dx.doi.org/10.1007/s11195-009-9129-9.

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Morgan, V. I. "Snow Accumulation and Oxygen-Isotope Records at the Law Dome Summit, Antarctica (Abstract)." Annals of Glaciology 11 (1988): 220. http://dx.doi.org/10.3189/s0260305500006844.

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At the summit of Law Dome (66°44′S, 112°50′E) the annual snow accumulation is equivalent to 0.7 m of water, and seasonal cycles of oxygen-isotope ratio are preserved clearly in the firn. Isotope-ratio measurements on three 28 m deep ice cores taken 15 m apart near the summit show that although annual layer thicknesses are well correlated between the cores, the actual isotope values (even when averaged over several years’ accumulation) are poorly correlated.Since the three sites must obviously receive the same precipitation, the differences in isotope ratio imply that the amounts of the precipi

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Morgan, V. I. "Snow Accumulation and Oxygen-Isotope Records at the Law Dome Summit, Antarctica (Abstract)." Annals of Glaciology 11 (1988): 220. http://dx.doi.org/10.1017/s0260305500006844.

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At the summit of Law Dome (66°44′S, 112°50′E) the annual snow accumulation is equivalent to 0.7 m of water, and seasonal cycles of oxygen-isotope ratio are preserved clearly in the firn. Isotope-ratio measurements on three 28 m deep ice cores taken 15 m apart near the summit show that although annual layer thicknesses are well correlated between the cores, the actual isotope values (even when averaged over several years’ accumulation) are poorly correlated. Since the three sites must obviously receive the same precipitation, the differences in isotope ratio imply that the amounts of the precip

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44

Omidyeganeh, Mohammad, and Ugo Piomelli. "Large-eddy simulation of three-dimensional dunes in a steady, unidirectional flow. Part 1. Turbulence statistics." Journal of Fluid Mechanics 721 (March 13, 2013): 454–83. http://dx.doi.org/10.1017/jfm.2013.36.

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AbstractWe performed large-eddy simulations of flow over a series of three-dimensional dunes at laboratory scale (Reynolds number based on the average channel depth and streamwise velocity was 18 900) using the Lagrangian dynamic eddy-viscosity subgrid-scale model. The bedform three-dimensionality was imposed by shifting a standard two-dimensional dune shape in the streamwise direction according to a sine wave. The statistics of the flow are discussed in 10 cases with in-phase and staggered crestlines, different deformation amplitudes and wavelengths. The results are validated qualitatively ag

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Robert, Matheos Prabo, S. Rosnah Upik, R. Noach Yakob, and Dami Dato T.O. "Effect of Goat Dung, Saboak and Corn Cobs Charcoal Mixture on the Physicochemical Properties of Biochar Briquettes." International Journal of Current Science Research and Review 07, no. 05 (2024): 2612–17. https://doi.org/10.5281/zenodo.11142688.

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Abstract : The experiment goals to investigate the physicochemical properties of biochar briquette mixed of goat dung, saboak shell and corn cob charcoal. Research used a completely randomized design with 4 different treatments were: P<sub>1</sub> = 25% of goat dung + 75% saboak shell charcoal; P<sub>2 </sub>= 25% of goat dung + 50% saboak shell + 25% corn cob charcoal; P<sub>3</sub> = 25% of goat dung + 25% saboak shell + 50% corn cobs charcoal; P<sub>4</sub> =25% of goat dung + 75% corn cobs charcoal. Variables measured included yield, density, moisture, ash, calorific value,

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Dubel, Ireen. "1975 – ‘Not just a year, but a lifetime for women’." Tijdschrift voor Genderstudies 24, no. 1 (2021): 5–23. http://dx.doi.org/10.5117/tvgn2021.1.001.dube.

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Abstract The article looks at the significance of the International Women’s Year (IWY) 1975 for the development of Dutch policy on development-related gender equality issues. It analyses how the route to the IWY World Conference and Women’s Tribune in Mexico City was marked by power struggles in and around the United Nations (UN), amongst member states, and between national governments and women’s organisations, in a geopolitical context of the Cold War and Global North–South divisions. The article discusses how, despite little initial enthusiasm for the IWY amongst the Dutch government and fe

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Naaz, Sabeeha, Jyotsna Singh, and R. B. Singh. "DUNE Prospect for Leptophobic Dark Matter." Advances in High Energy Physics 2020 (November 26, 2020): 1–9. http://dx.doi.org/10.1155/2020/9047818.

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Highly energetic proton/electron beam fixed-target experiments extend an opportunity to probe the sub-GeV dark matter and associated interactions. In this work, we have explored the sensitivity of DUNE (Deep Underground Neutrino Experiment) for sub-GeV leptophobic dark matter, i.e., this dark matter barely couples with the leptons. Baryon number gauge theory can predict the existence of leptophobic cold dark matter particle candidates. In our work, the dark matter candidate is considered to be scalar whose mass is defined by the symmetry breaking of new baryonic gauge group U 1 B . In this sce

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Brizzolari, C. "The ProtoDUNE Photon Detection System: technology validation and performance." Journal of Instrumentation 19, no. 03 (2024): C03001. http://dx.doi.org/10.1088/1748-0221/19/03/c03001.

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Abstract DUNE is a long-baseline accelerator experiment currently in construction at Fermilab and SURF (South Dakota). The science objectives of DUNE include the search for CP violation in the leptonic sector and the identification of the neutrino mass hierarchy, along with the observation of supernova neutrino bursts and proton decay. The Far Detector consists of four modules located deep underground, three of those instrumented with Liquid Argon TPCs and equipped with the DUNE Photon Detection System (PDS). The PDS is based on a novel light trapping technology that greatly enhances the DUNE

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Lin, P. N., L. G. Thompson, M. E. Davis та E. Mosley-Thompson. "1000 years of climatic change in China: ice-core δ18O evidence". Annals of Glaciology 21 (1995): 189–95. http://dx.doi.org/10.3189/s0260305500015809.

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Since 1987, ice cores have been drilled from the Dunde and Guliya ice caps on the Tibetan Plateau, western China. Here, the oxygen isotopic (δ18O) records for the last 1000 years from both these cores are compiled and compared. Using surface temperature observations since the mid-1960s from meteorological stations on the plateau and δ18O measured on precipitation collected contemporaneously, the empirical relationship: δ18O = 0.6 Ts – 12 is established. δ18O appears to serve as a reasonable proxy for regional surface temperatures and a reasonable basis for reconstructing 1000a proxy temperatur

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Lin, P. N., L. G. Thompson, M. E. Davis та E. Mosley-Thompson. "1000 years of climatic change in China: ice-core δ18O evidence". Annals of Glaciology 21 (1995): 189–95. http://dx.doi.org/10.1017/s0260305500015809.

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Since 1987, ice cores have been drilled from the Dunde and Guliya ice caps on the Tibetan Plateau, western China. Here, the oxygen isotopic (δ18O) records for the last 1000 years from both these cores are compiled and compared. Using surface temperature observations since the mid-1960s from meteorological stations on the plateau and δ18O measured on precipitation collected contemporaneously, the empirical relationship: δ18O = 0.6 T s – 12 is established. δ18O appears to serve as a reasonable proxy for regional surface temperatures and a reasonable basis for reconstructing 1000a proxy temperatu

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