Bibliografías temáticas / Marine Ice sheet

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Literatura académica sobre el tema "Marine Ice sheet"

Autor: Grafiati
Publicado: 25 de mayo de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Marine Ice sheet"

1

HASELOFF, MARIANNE, and OLGA V. SERGIENKO. "The effect of buttressing on grounding line dynamics." Journal of Glaciology 64, no. 245 (2018): 417–31. http://dx.doi.org/10.1017/jog.2018.30.

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ABSTRACTDetermining the position and stability of the grounding line of a marine ice sheet is a major challenge for ice-sheet models. Here, we investigate the role of lateral shear and ice-shelf buttressing in grounding line dynamics by extending an existing boundary layer theory to laterally confined marine ice sheets. We derive an analytic expression for the ice flux at the grounding line of confined marine ice sheets that depends on both local bed properties and non-local ice-shelf properties. Application of these results to a laterally confined version of the MISMIP 1a experiment shows tha
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Gandy, Niall, Lauren J. Gregoire, Jeremy C. Ely, et al. "Marine ice sheet instability and ice shelf buttressing of the Minch Ice Stream, northwest Scotland." Cryosphere 12, no. 11 (2018): 3635–51. http://dx.doi.org/10.5194/tc-12-3635-2018.

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Abstract. Uncertainties in future sea level projections are dominated by our limited understanding of the dynamical processes that control instabilities of marine ice sheets. The last deglaciation of the British–Irish Ice Sheet offers a valuable example to examine these processes. The Minch Ice Stream, which drained a large proportion of ice from the northwest sector of the British–Irish Ice Sheet during the last deglaciation, is constrained with abundant empirical data which can be used to inform, validate, and analyse numerical ice sheet simulations. We use BISICLES, a higher-order ice sheet
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Mulder, T. E., S. Baars, F. W. Wubs, and H. A. Dijkstra. "Stochastic marine ice sheet variability." Journal of Fluid Mechanics 843 (March 23, 2018): 748–77. http://dx.doi.org/10.1017/jfm.2018.148.

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It is well known that deterministic two-dimensional marine ice sheets can only be stable if the grounding line is positioned at a sufficiently steep, downward sloping bedrock. When bedrock conditions favour instabilities, multiple stable ice sheet profiles may occur. Here, we employ continuation techniques to examine the sensitivity of a two-dimensional marine ice sheet to stochastic noise representing short time scale variability, either in the accumulation rate or in the sea level height. We find that in unique regimes, the position of the grounding line is most sensitive to noise in the acc
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Pegler, Samuel S. "Suppression of marine ice sheet instability." Journal of Fluid Mechanics 857 (October 25, 2018): 648–80. http://dx.doi.org/10.1017/jfm.2018.742.

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A long-standing open question in glaciology concerns the propensity for ice sheets that lie predominantly submerged in the ocean (marine ice sheets) to destabilise under buoyancy. This paper addresses the processes by which a buoyancy-driven mechanism for the retreat and ultimate collapse of such ice sheets – the marine ice sheet instability – is suppressed by lateral stresses acting on its floating component (the ice shelf). The key results are to demonstrate the transition between a mode of stable (easily reversible) retreat along a stable steady-state branch created by ice-shelf buttressing
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Schoof, Christian. "Marine ice sheet stability." Journal of Fluid Mechanics 698 (March 15, 2012): 62–72. http://dx.doi.org/10.1017/jfm.2012.43.

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AbstractWe examine the stability of two-dimensional marine ice sheets in steady state. The dynamics of marine ice sheets is described by a viscous thin-film model with two Stefan-type boundary conditions at the moving boundary or ‘grounding line’ that marks the transition from grounded to floating ice. One of these boundary conditions constrains ice thickness to be at a local critical value for flotation, which depends on depth to bedrock at the grounding line. The other condition sets ice flux as a function of ice thickness at the grounding line. Depending on the shape of the bedrock, multipl
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Pegler, Samuel S. "Marine ice sheet dynamics: the impacts of ice-shelf buttressing." Journal of Fluid Mechanics 857 (October 25, 2018): 605–47. http://dx.doi.org/10.1017/jfm.2018.741.

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Marine ice sheets are continent-scale glacial masses that lie partially submerged in the ocean, as applies to significant regions of Antarctica and Greenland. Such ice sheets have the potential to destabilise under a buoyancy-driven instability mechanism, with considerable implications for future sea level. This paper and its companion present a theoretical analysis of marine ice sheet dynamics under the effect of a potentially dominant control of the buttressing force generated by lateral stresses on the downstream floating component of the ice sheet (the ice shelf). The analysis reveals crit
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Meur, E. Le, and Richard C. A. Hindmarsh. "Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model." Journal of Glaciology 47, no. 157 (2001): 258–70. http://dx.doi.org/10.3189/172756501781832322.

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AbstractWe use a self-gravitating viscoelastic model of the Earth and a dynamically consistent marine ice-sheet model to study the relationships between marine ice-sheet dynamics, relative sea level, basal topography and bedrock dynamics. Our main conclusion is that sea-level change and lithospheric coupling are likely to have played limited roles in the postglacial retreat of marine ice sheets. The postglacial rise in sea level would only have caused at the most around 100 km of grounding-line retreat for an ice sheet of similar dimensions to the West Antarctic ice sheet, compared with the se
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Zweck, Chris, and Philippe Huybrechts. "Modeling the marine extent of Northern Hemisphere ice sheets during the last glacial cycle." Annals of Glaciology 37 (2003): 173–80. http://dx.doi.org/10.3189/172756403781815870.

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AbstractMechanisms that determine time-dependent changes of the marine ice margin in dynamic ice-sheet models are important but poorly understood. Here we derive an empirical formulation for changes in the marine extent when modelling the Northern Hemisphere ice sheets over the last glacial cycle in a three-dimensional thermomechanically coupled ice-sheet model. We assume that the strongest control on changes in marine extent is ice calving, and that the variable most crucial to calving is water depth. The empirical marine-extent relationship is tuned so that the major marine-retreat history o
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Tsai, Victor C., Andrew L. Stewart, and Andrew F. Thompson. "Marine ice-sheet profiles and stability under Coulomb basal conditions." Journal of Glaciology 61, no. 226 (2015): 205–15. http://dx.doi.org/10.3189/2015jog14j221.

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AbstractThe behavior of marine-terminating ice sheets, such as the West Antarctic ice sheet, is of interest due to the possibility of rapid grounding-line retreat and consequent catastrophic loss of ice. Critical to modeling this behavior is a choice of basal rheology, where the most popular approach is to relate the ice-sheet velocity to a power-law function of basal stress. Recent experiments, however, suggest that near-grounding line tills exhibit Coulomb friction behavior. Here we address how Coulomb conditions modify ice-sheet profiles and stability criteria. The basal rheology necessaril
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Robel, Alexander A., Earle Wilson, and Helene Seroussi. "Layered seawater intrusion and melt under grounded ice." Cryosphere 16, no. 2 (2022): 451–69. http://dx.doi.org/10.5194/tc-16-451-2022.

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Abstract. Increasing melt of ice sheets at their floating or vertical interfaces with the ocean is a major driver of marine ice sheet retreat and sea level rise. However, the extent to which warm, salty seawater may drive melting under the grounded portions of ice sheets is still not well understood. Previous work has explored the possibility that dense seawater intrudes beneath relatively light subglacial freshwater discharge, similar to the “salt wedge” observed in many estuarine systems. In this study, we develop a generalized theory of layered seawater intrusion under grounded ice, includi
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Tesis sobre el tema "Marine Ice sheet"

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Koester, Alexandria Jo. "Rapid thinning of the Laurentide Ice Sheet in coastal Maine, USA during late Heinrich Stadial 1:." Thesis, Boston College, 2017. http://hdl.handle.net/2345/bc-ir:107308.

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Thesis advisor: Jeremy D. Shakun<br>Few data are available to infer the thinning rate of the Laurentide Ice Sheet (LIS) through the last deglaciation, despite its importance for constraining past ice sheet response to climate warming. We measured 31 cosmogenic 10Be exposure ages in samples collected on coastal mountainsides in Acadia National Park and from the slightly inland Pineo Ridge moraine complex, a ~100-km-long glaciomarine delta, to constrain the timing and rate of LIS thinning and subsequent retreat in coastal Maine. Samples collected along vertical transects in Acadia National Park
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Nicholl, Joseph Anthony Leo. "Changes in ice sheet dynamics across the mid-Pleistocene transition recorded in North Atlantic sediments." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648858.

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Simmons, Sarah-Louise. "An investigation into the effect of glacially exported nutrients from the Greenland Ice Sheet on marine primary production." Thesis, University of Bristol, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.742982.

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Cook, Carys Patricia. "Insights into the behaviour of the Pliocene East Antarctic ice sheet from provenance studies of marine sediments using radiogenic isotopoes." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/14262.

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Direct evidence for the response of Earth’s largest continental ice mass, the East Antarctic ice sheet (EAIS), to climatic warmth is extremely limited. The primary aim of this thesis is to improve understanding of the behaviour of the EAIS during the warmer-than-present Pliocene Epoch (2.58 to 5.33 million years ago). To this end, I analysed the radiogenic neodymium and strontium isotopic provenance of fine-grained (<63μm) Pliocene detrital marine sediments deposited offshore of the East Antarctic continent, which can provide information on source bedrock characteristics, continental erosional
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Sacchetti, Fabio. "Late Quaternary sedimentation associated with the British-Irish Ice Sheet on the NW Irish continental slope: a marine geological and geophysical investigation." Thesis, University of Manchester, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646396.

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This research demonstrates the impact that glaciations had on the geomorphology and sediment deposition of the NW Irish continental margin, including both sides of the Rockall Trough and the Rockall Bank. A modern hydrographic, geophysical and sedimentological approach is used to analyse and interpret new and historical datasets, including multi beam, sidescan sonar, seismic and core data. New methodologies such as CUBE and Geocoder algorithms for multi beam bathymetry and backscatter data processing, 3D visualisations, ArcGIS Spatial and Hydrological Analysis and digital X-Ray scanning are us
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Leigh, Sasha Naomi Bharier. "A study of the dynamics of the British Ice Sheet during Marine Isotope Stages 2 and 3, focusing on Heinrich Events 2 and 4 and their relationship to the North Atlantic glaciological and climatological conditions /." St Andrews, 2007. http://hdl.handle.net/10023/525.

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Hibbert, Fiona Danielle. "Dynamics of the British Ice Sheet and prevailing hydrographic conditions for the last 175,000 years : an investigation of marine sediment core MD04-2822 from the Rockall Trough." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/3136.

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This study presents a stratigraphic investigation of the marine sediment core MD04-2822 from the Rockall Trough (56° 50.54' N, 11° 22.96' W; 2344 m water depth). This core is currently the only available high resolution record for the calibration of Late Quaternary sedimentary sequences of the British (Hebridean) margin. It therefore offers an unprecedented archive of changing sedimentological and climatological conditions for the last 175,000 years. The high resolution, multi-proxy records have enabled surface and deep water conditions within the Rockall Trough to be reconstructed. In additio
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Hill, Heather W. "Abrupt climate change during the last glacial period : a Gulf of Mexico perspective." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001539.

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Van, Aalderen Victor. "Modéliser l'évolution du climat global et de la calotte eurasienne pendant la dernière déglaciation." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASJ029.

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La calotte marine de l'Antarctique de l'Ouest présente la particularité d'être en grande partie en contact avec l'océan. Les dernières observations révèlent une accélération de sa perte de masse sur les dernières décennies, essentiellement provoquée par l'augmentation de la fonte sous les plateformes de glace flottante. En revanche, son évolution future reste très incertaine, du fait de notre mauvaise compréhension des processus physiques mis en jeu entre la calotte et l'océan.La dernière déglaciation (-21 000 - -11 000 ans), constitue l'un des changements climatiques majeurs les plus récents
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Nowicki, Sophie Marie Jeanne. "Modelling the transition zone of marine ice sheets." Thesis, University College London (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.499076.

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Libros sobre el tema "Marine Ice sheet"

1

Bindschadler, R. A. SeaRISE: A multidisciplinary research initiative to predict rapid changes in global sea level caused by collapse of marine ice sheets. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990.

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Office, General Accounting. Coast Guard: Federal costs resulting from the Exxon Valdez oil spill : fact sheet for congressional requesters. GAO, 1990.

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Kassens, Heidemarie. Sistema mori͡a Laptevykh i prilegai͡ushchikh moreĭ Arktiki: Sovremennoe sostoi͡anie i istorii͡a razvitii͡a. Moskovskiĭ gos. universitet, 2009.

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Bindschadler, R. A. SeaRISE: a multidisciplinary research initiative to predict rapid changes in global sea level caused by collapse of marine ice sheets: Proceedings of a workshop cosponsored by the National Science Foundation, Washington, D.C., and the National Aeronautics and Space Administration, Washington, D.C., and held in College Park, Maryland, January 23-25, 1990. Goddard Space Flight Center, 1990.

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Omstedt, Anders. The Development of Climate Science of the Baltic Sea Region. Oxford University Press, 2017. http://dx.doi.org/10.1093/acrefore/9780190228620.013.654.

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Dramatic climate changes have occurred in the Baltic Sea region caused by changes in orbital movement in the earth–sun system and the melting of the Fennoscandian Ice Sheet. Added to these longer-term changes, changes have occurred at all timescales, caused mainly by variations in large-scale atmospheric pressure systems due to competition between the meandering midlatitude low-pressure systems and high-pressure systems. Here we follow the development of climate science of the Baltic Sea from when observations began in the 18th century to the early 21st century. The question of why the water l
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Capítulos de libros sobre el tema "Marine Ice sheet"

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Kumar, Rajesh. "Marine Ice Sheet." In Encyclopedia of Earth Sciences Series. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-2642-2_340.

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Mulder, T. E., H. A. Dijkstra, and F. W. Wubs. "Numerical Bifurcation Analysis of Marine Ice Sheet Models." In Computational Methods in Applied Sciences. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91494-7_14.

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Pattyn, Frank, Ann Huyghe, Sang De Brabander, and Bert De Smedt. "Role of Transition Zones in Marine Ice Sheet Dynamics." In Collected Reprint Series. American Geophysical Union, 2014. http://dx.doi.org/10.1002/9781118782033.ch20.

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Scherer, Reed P. "Quaternary interglacials and the West Antarctic Ice Sheet." In Earth's Climate and Orbital Eccentricity: The Marine Isotope Stage 11 Question. American Geophysical Union, 2003. http://dx.doi.org/10.1029/137gm08.

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Pollard, David, and Robert M. Deconto. "A Coupled Ice-Sheet/Ice-Shelf/Sediment Model Applied to a Marine-Margin Flowline: Forced and Unforced Variations." In Glacial Sedimentary Processes and Products. Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444304435.ch4.

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Singh, Ashutosh K., Devesh K. Sinha, Vikram Pratap Singh, Kirtiranjan Mallick, Ankush Shrivastava, and Tushar Kaushik. "Cenozoic Evolution of Antarctic Ice Sheet, Circum Antarctic Circulation and Antarctic Climate: Evidence from Marine Sedimentary Records." In Earth and Environmental Sciences Library. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87078-2_4.

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Hindmarsh, Richard C. A. "Qualitative Dynamics of Marine Ice Sheets." In Ice in the Climate System. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-85016-5_5.

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Johnston, Arch C. "The Effect of Large Ice Sheets on Earthquake Genesis." In Earthquakes at North-Atlantic Passive Margins: Neotectonics and Postglacial Rebound. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2311-9_34.

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Holmes, R., J. Bulat, I. Hamilton, and D. Long. "Morphology of an Ice-Sheet Limit and Constructional Glacially-Fed Slope Front, Faroe-Shetland Channel." In European Margin Sediment Dynamics. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55846-7_24.

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Grgić, Marijan, and Tomislav Bašić. "Radar Satellite Altimetry in Geodesy - Theory, Applications and Recent Developments." In Geodetic Sciences - Theory, Applications and Recent Developments [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97349.

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Radar satellite altimetry has revolutionized our understanding of the Earth’s sea-level shape and its change over time, monitoring of the natural and human-induced water cycle, marine gravity computations, seafloor relief (bathymetry) reconstruction, tectonics, water mass balance change monitoring, etc., thus providing significant impact in geodesy. Today satellite radar altimetry is critical for unifying the vertical height systems, regional and global geoid modeling, monitoring of the sea level rise impact, monitoring of the ice sheet melting, and others. This chapter gives an overview of th
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Actas de conferencias sobre el tema "Marine Ice sheet"

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Baxter, Richard E., and William E. Jamrok. "Harsh Environment – ICCP System for Large Marine Loading Facility." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09072.

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Abstract An Impressed Current Cathodic Protection (ICCP) system utilizing local and remote anodes was installed for a ship loading facility in Quebec, Canada, to protect the submerged H-piles, cylindrical piles and sheet piles associated with the facility. This facility is subject to extreme ice loading conditions, tides, changing water resistivity, ship traffic and dredging operations.
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Milodowski, Antoni E., Michael T. Styles, Lars Werme, and Virginia M. Oversby. "The Corrosion of More than 176 Million Year Old Native Copper Plates from a Deposit in Mudstone in South Devon; United Kingdom." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03681.

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Abstract Copper is the selected material for the corrosion barrier in the canister for encapsulation of spent nuclear fuel from the Swedish power reactors. These canisters will be buried in a deep geological repository in granitic rock at a depth of 400 to 700 m. At these depths, the groundwater will be reducing and copper will be immune to corrosion in the absence of dissolved sulphides. Under these conditions the spent fuel canisters are expected to meet with a very high margin SKB’s design goal of 100 000 years. Extrapolations of short-term experimental data to such long times will always h
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Dowdeswell, Julian A. "THE GEOMORPHIC SIGNATURE OF PAST ICE-SHEET GROUNDING LINES IN THE MARINE RECORD." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-306091.

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Shakun, Jeremy D., Lee B. Corbett, Paul R. Bierman, and Susan H. Zimmerman. "PLIOCENE GREENLAND ICE SHEET GROWTH RECORDED BY IN SITU 10BE DECREASE IN MULTIPLE MARINE SEDIMENT CORES." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-305299.

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Hemming, Sidney. "MARINE SEDIMENT PROVENANCE EVIDENCE FOR THE EXTENT OF THE LAURENTIDE ICE SHEET DURING THE LAST GLACIAL CYCLE." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-379913.

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Dalton, April S., Tamara Pico, Evan J. Gowan, et al. "REVIEWING GEOLOGICAL AND NUMERICAL EVIDENCE ON THE EXTENT OF THE LAURENTIDE ICE SHEET DURING MARINE ISOTOPE STAGE 3." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-380966.

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Christ, Andrew J., and David R. Marchant. "A TERRESTRIAL PERSPECTIVE OF THE LGM IN MCMURDO SOUND, ANTARCTICA: IMPLICATIONS FOR MARINE ICE SHEET DYNAMICS, ICE FLOW, AND DEGLACIATION OF THE ROSS SEA EMBAYMENT." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-305311.

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Parker, Shane T., and Jonathan P. Warnock. "THE EFFECT OF A WESTERN ANTARCTIC ICE SHEET COLLAPSE ON NUTRIENT RECYCLING RATES DURING MARINE ISOTOPE STAGE 31: INITIAL FINDINGS." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-311175.

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Venturelli, Ryan, Brad Rosenheim, Christina Davis, et al. "Millennial scale marine incursion into an isolated environment fuels a contemporary subglacial microbial community beneath the West Antarctic Ice Sheet." In Goldschmidt2023. European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.13607.

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Larson, Phillip, Howard D. Mooers, Angela J. Berthold, and Kristi M. Kotrapu. "SEDIMENT TRANSPORT CYCLES OF THE LAURENTIDE ICE SHEET I: SOFT TO HARD BED TRANSITION DURING WISCONSIN MARINE ISOTOPE STAGE 5D-2." In 54th Annual GSA North-Central Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020nc-348205.

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Informes sobre el tema "Marine Ice sheet"

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Kerr, D. E. Reconnaissance surficial geology, Brichta Lake, Nunavut, NTS 76-P. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329670.

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Preliminary surficial geology studies, based on air photo interpretation and limited legacy field data in the Brichta Lake map area, provide an understanding of the distribution and nature of surficial materials, and regional glacial history. The terrain is characterized by extensive glacial and meltwater scouring that has affected bedrock outcrops, and eroded hummocky and streamlined till, till blankets, and till veneers in the southwest regions. Streamlined bedrock and till landforms indicate ice flow towards the northwest and north-northwest during the last glaciation. Subglacial meltwater
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Paulen, R. C., J. M. Rice, and M. Ross. Surficial geology, Lac aux Goélands, Quebec, NTS 23-P southeast. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328291.

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The Lac aux Goélands area is of moderate relief characterized by till blankets in the lowlands and till veneers with large expanses of bedrock outcrops in the western and eastern margins. Bedrock was variably eroded by the Laurentide Ice Sheet, east of the Ancestral Labrador ice divide. Phases of ice flow imparted multiple sets of glacially streamlined landforms and erosional paleo-flow indicators on the landscape. However, the dominant eastward-trending, elongated streamlined landforms were formed by ice streaming during deglaciation. Multiple sets of discordant meltwater channels were formed
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Tremblay, T., and M. Lamothe. New contributions to the ice-flow chronology in the Boothia-Lancaster Ice Stream catchment area. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331062.

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Within the Boothia-Lancaster Ice Stream (BLIS) catchment area, ice flow patterns were reconstructed based on the synthesis of striation directions and cross-cutting relationships, transport patterns of erratic boulders, glacial landforms, cold-based glacial landsystems, and ice-retreat chronology. New ArcticDEM data, high-definition satellite imagery and multibeam echosounder bathymetric datasets provided increased details on ice flow indicators. Convergent high-velocity ice flows through the BLIS main axis were major, persistent features in the northeastern Laurentide Ice Sheet through the la
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Tremblay, T., and M. Lamothe. New contributions to the ice-flow chronology in the Boothia-Lancaster ice-stream catchment area, Nunavut. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331424.

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Within the Boothia-Lancaster ice stream (BLIS) catchment area, ice-flow patterns were reconstructed based on the synthesis of striation directions and crosscutting relationships, transport patterns of erratic boulders, glacial landforms, cold-based glacial landsystems, and ice-retreat chronology. New ArcticDEM data, high-definition satellite imagery, and multibeam echosounder bathymetric data sets provided increased details on ice-flow indicators. Convergent high-velocity ice flows through the BLIS main axis were major, persistent features in the northeastern Laurentide Ice Sheet through the l
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Smith, I. R. Surficial geology, La Biche River northwest, Yukon-Northwest Territories, NTS 95-C/11, 12, 13, and 14. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330591.

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This map is situated in the Hyland Plateau, west of the Mackenzie Mountains, southeast Yukon. The area was inundated by the Cordilleran Ice Sheet during the Late Wisconsinan glaciation. Ice advanced east to northeast across the rolling bedrock terrain, producing dense networks of sometimes cross-cutting bedrock flutings and drumlinoid ridges. During deglaciation, ice flow became increasingly topographically constrained, shifting to more northward flow along major valleys. Meltwater flowing north initially crossed the divide into the Nahanni River basin. Later, as ice retreated south and eastwa
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Kerr, D. E. Reconnaissance surficial geology, Nose Lake, Nunavut-Northwest Territories, NTS 76-F. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329666.

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The oldest regional ice flow in the Nose Lake map area is southwestward. Subsequent northwestward flow is inferred from streamlined bedrock in central and eastern regions. The final and youngest flow was southwestward in these same regions, recorded by an abundance of streamlined landforms in till blanket and bedrock. The western edge of this late active ice lobe is defined by recessional moraines, part of the Twin Jugs moraine, also marking the eastern limit of a broad band of hummocky till from downwasting ice. During deglaciation, short-lived proglacial lakes, identified by raised beaches a
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Bartolino, Valerio, Birgit Koehler, and Lena Bergström, eds. Climate effects on fish in Sweden : Species-Climate Information Sheets for 32 key taxa in marine and coastal waters. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.4lmlt1tq5j.

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The purpose of this publication is to summarize the state of knowledge on the effects of environmental variability and climate change for individual species and stocks based on literature review, giving species-climate information for 32 key taxa in Swedish marine and coastal waters. The report is written in English. The extent and scale of recent changes in climate due to global warming is unprecedented and causes increasing effects on ecosystems. In oceans, ongoing warming leads to, for example, increased water temperatures, decreased ice cover and effects on hydrology and water circulation
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Lohrberg, Arne. Electromagnetic resistivity anomalies in Tunnel Valleys: Potential for hidden offshore groundwater? (ENTRAP) - Cruise No. AL611, 22.04.2024 – 06.05.2024, Kiel – North Sea – Kiel (Germany). GEOMAR Helmholtz Centre for Ocean Research Kiel, 2024. http://dx.doi.org/10.3289/cr_al611.

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The role of large subsurface landforms produced during glaciations of the Pleistocene is still poorly understood with respect to groundwater flow. In particular, so-called tunnel valleys (TVs) formed beneath ice sheets acted as drainage systems of glacial meltwater. Due to their mechanism of formation, the fill of buried TVs often consists of highly permeable sands and gravels in their lower part and fine-grained deposits at their top. Such a configuration promotes their role as preferential flow pathways for groundwater sealed from the saltwater above. To understand the role of TVs for offsho
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Surficial geology, Dendale Lake, Yukon-Northwest Territories, NTS 95-C/15. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331886.

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This map area is situated within the Hyland Plateau and comprises the headwaters of the La Biche River. It is framed by the La Biche Range on the east, the Tlogotsho Range on the north, and an unnamed ridge along its western boundary. The map area was inundated by the Cordilleran Ice Sheet during the Late Wisconsinan glaciation, and ice advanced east to northeast across the region. Coalescence with the Laurentide Ice Sheet is considered to have occurred just east and north of this area. During deglaciation, ice retreated generally south and westwards. Prominent northward-aggrading ice-contact
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