Results 91 to 100 of about 8,984 (223)

Modeling oscillations in connected glacial lakes

Journal of Glaciology, 2019
Mountain glaciers and ice sheets often host marginal and subglacial lakes that are hydraulically connected through subglacial drainage systems. These lakes exhibit complex dynamics that have been the subject of models for decades.
Aaron G. Stubblefield, Timothy T. Creyts, Jonathan Kingslake, Marc Spiegelman   +3 more
doaj   +1 more source

Deep clustering in subglacial radar reflectance reveals subglacial lakes

The Cryosphere
Abstract. Ice-penetrating radar (IPR) imaging is a valuable tool for observing the internal structure and bottom of ice sheets. Subglacial water bodies, also known as subglacial lakes, generally appear as distinct, bright, flat, and continuous reflections in IPR images. In this study, we use available IPR images from the Gamburtsev Subglacial Mountains
S. Dong, S. Dong, S. Dong, S. Dong, L. Fu, X. Tang, X. Tang, Z. Li, X. Chen   +8 more
openaire   +4 more sources

Limnological conditions in Subglacial Lake Vostok, Antarctica [PDF]

Limnology and Oceanography, 2006
Subglacial Lake Vostok is located ~4 km beneath the surface of the East Antarctic Ice Sheet and has been isolated from the atmosphere for ≫15 million yr. Concerns for environmental protection have prevented direct sampling of the lake water thus far. However, an ice core has been retrieved from above the lake in which the bottom ,85 m represents lake ...
Brent C. Christner, George Royston-Bishop, Christine M. Foreman, Brianna R. Arnold, Martyn Tranter, Kathleen A. Welch, W. Berry Lyons, Alexandre I. Tsapin, Michael Studinger, John C. Priscu   +9 more
openaire   +1 more source

Drivers of Benthic Iron Fluxes and the Pore‐Water Iron Isotopic Signature in Surface Sediments of South Georgia Fjords, Sub‐Antarctica

Global Biogeochemical Cycles, Volume 40, Issue 4, April 2026.
Abstract Benthic iron (Fe) fluxes from coastal sediments support phytoplankton blooms downstream of subpolar islands. We combine solid‐phase and pore‐water geochemical data, including its iron isotopic signature (δ56Feaq), to identify the main drivers of benthic Fe fluxes from sub‐Antarctic fjord and shelf sediments of South Georgia, and to evaluate ...
Berenice Ebner, Susann Henkel, Peter Kraal, Daniel Müller, Male Köster, Michael Staubwasser, Katja Laufer‐Meiser, Laura Kattein, Walter Geibert, Sabine Kasten   +9 more
wiley   +1 more source

Survival of the Mýrdalsjökull ice cap through the Holocene thermal maximum: evidence from sulphur contents in Katla tephra layers (Iceland) from the last ∼8400 years [PDF]

, 2007
International audienceThe climate in Iceland was drier and warmer during the Holocene thermal maximum than it is today and it has been suggested that ice caps disappeared entirely. Katla, a volcano covered by the Mýrdalsjökull ice cap in southern Iceland,
Bergrun A. Oladottir, Björnsson, Björnsson, Gudrun Larsen, Jakobsson, Jóhannesson, Jóhannesson, Knudsen, Larsen, Larsen, Oladottir, Olgeir Sigmarsson, Smith, Sveinbjörnsdóttir, Thor Thordarson, Thorarinsson, Thordarson   +16 more
core   +4 more sources

Terrestrial Regulation of Lacustrine Hg Deposition During Glacial‐Interglacial Cycles

Paleoceanography and Paleoclimatology, Volume 41, Issue 4, April 2026.
Abstract Mercury (Hg) is a toxic trace metal. It is clear that its natural cycle has been highly disturbed by human activities, but there remains much to understand about how it operated before these perturbations. For example, the influences of glacial‐interglacial climate changes on the geochemical cycle of environmental Hg remain poorly understood ...
Alice R. Paine, Joost Frieling, Bernd Wagner, Alexander Francke, Jack H. Lacey, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

ENVIRONMENT PROTECTION AND ENVIRONMENT MONITORING ISSUES IN THE PROJECTS OF SUBGLACIAL LAKES STUDIES IN ANTARCTICA

Лëд и снег, 2015
Antarctic subglacial lakes can represent extreme natural habitats for microorganisms from the position of their evolution and adaptation, as well as they can contain the information on Antarctic ice sheet history and climatic changes in their sediments ...
I. A. Alekhina, N. I. Vasiliev, V. Ya. Lipenkov   +2 more
doaj   +1 more source

A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]

, 2014
Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice ...
Anne M. Le Brocq, Bamber, Bartholomew, Bartholomew, Cook, Cowton, David M. Rippin, DeConto, Dowsett, Fausto Ferraccioli, Fowler, Fretwell, Haran, Hugh F.J. Corr, Jordan, Joughin, Kathryn C. Rose, Le Brocq, Lewis, Martin J. Siegert, Miller, Mote, Naish, Neil Ross, Nitsche, Pritchard, Raymo, Rignot, Robert G. Bingham, Ross, Ross, Schoof, Shepherd, Smith, Sugden, Tom A. Jordan, Trusel, Wingham, Wright, Wright, Young, Zachos   +41 more
core   +2 more sources

Early Holocene jökulhlaup chronology and deglaciation dynamics in central Iceland

Boreas, Volume 55, Issue 2, Page 340-355, April 2026.
Glacial lake outburst floods (jökulhlaups) have occurred throughout the Quaternary in glaciated regions worldwide. Reconstructing flood chronology yields insight into deglaciation processes, environmental change and the role of extreme events in landscape evolution.
Greta H. Wells, Þorsteinn Sæmundsson, Edwin R. C. Baynes, Timothy Beach, Sheryl Luzzadder‐Beach   +4 more
wiley   +1 more source

Role of Gmelinoides fasciatus (Crustacea: Amphipoda) in Macrozoobenthos on the Littoral of Lake Onego During the Subglacial Period [PDF]

Journal of Stress Physiology & Biochemistry, 2023
Macrozoobenthos of the littoral of Lake Onego is represented by 22 units of different taxonomic rank. The invasive species Gmelinoides fasciatus (Stebbing 1899) (CRUSTACEA: AMPHIPODA) plays a dominant role by biomass in the littoral macrozoobenthos ...
A.I. Sidorova
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