Results 81 to 90 of about 862,051 (192)

Repeated subglacial jökulhlaups in northeastern Greenland revealed by CryoSat

Journal of Glaciology
Surface height changes above three previously undetected subglacial lakes in northeastern Greenland are documented using CryoSat, DEMs and ICESat-2. Between 7 February and 6 March 2012, the central ice region (22.6 km2) above the largest lake dropped by ~
Laurence Gray, David Burgess, Luke Copland, Christine Dow, Xavier Fettweis, David Fisher, Will Kochtitzky, Wesley van Wychen, James Zheng   +8 more
doaj   +1 more source

Air–Water Greenhouse Gases Exchange in Surface Waters of Deception Island (South Shetland Archipelago, Antarctica): Assessment of Drivers of Spatial Variability

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Greenhouse gases (GHGs) such as Carbon Dioxide (CO2), Methane (CH4), and Nitrous Oxide (N2O) play critical roles in global climate change. CO2 dominates due to its high concentration and long atmospheric lifetime, while CH4 and N2O also exert strong heat‐trapping effects despite shorter residence times. Deception Island, in the Southern Ocean,
S. Amaya‐Vías, A. Brusselman, B. Delille, M. de la Paz, M. Díez‐Minguito, S. Flecha, O. Belyaev, G. Navarro, A. Tovar‐Sánchez, I. E. Huertas   +9 more
wiley   +1 more source

Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns

, 2011
Ellsworth Subglacial Lake, first observed in airborne radio echo sounding data acquired in 1978, is located within a long, deep subglacial trough within the Ellsworth Subglacial Highlands of West Antarctica.
Wadham, J.L., Woodward, J., King, Edward, Whalley, W.B., Blake, David, Hill, Christopher, Mowlem, M., Ross, N., Lamb, H., Tait, Andrew, Harris, W., Siegert, M.J., Rivera, A., Bentley, M.J., Tranter, M., Cockell, C.S., Maher, B., Corr, Hugh, Makinson, Keith, Hodgson, Dominic, Capper, Linda, Pearce, David, Hindmarsh, Richard, Clarke, Rachel, Parnell, J., Smith, Andy, Priscu, J.   +26 more
core   +5 more sources

Holocene hydrological evolution of subglacial Lake Snow Eagle, East Antarctica, implied by englacial radiostratigraphy

Journal of Glaciology
A major subglacial lake, Lake Snow Eagle (LSE), was identified in East Antarctica by airborne geophysical surveys. LSE, contained within a subglacial canyon, likely hosts a valuable sediment record of the geological and glaciological changes of interior ...
Shuai Yan, Michelle R. Koutnik, Donald D. Blankenship, Jamin S. Greenbaum, Duncan A. Young, Jason L. Roberts, Tas van Ommen, Bo Sun, Martin J. Siegert   +8 more
doaj   +1 more source

Direct Flux Measurements Reveal CO2 Sinks in Icelandic Glacial Streams Driven by Weathering and Hydrological Mixing

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Glacier‐fed rivers are increasingly recognized as important components of high‐latitude carbon cycling, yet direct observations of CO2 exchange in proglacial streams remain limited, especially in young basaltic catchments. Here, we quantify spatial and seasonal patterns of CO2 exchange along a 3‐km reach of the glacier‐fed stream Virkisá ...
Ann‐Kathrin Wild, Christina Fasching, Max G. Rudolph, Kyle S. Boodoo, Andreas Hartmannn, Peter Chifflard   +5 more
wiley   +1 more source

Changing climates and environments within the complex Middle to Late Pleistocene fill of an overdeepened valley at Niederweningen, Switzerland

Boreas, Volume 55, Issue 4, Page 964-992, October 2026.
Glacially overdeepened valleys in the northern Alpine Foreland preserve Middle to Late Pleistocene sedimentary sequences that may serve as valuable archives for reconstructing past environmental changes in response to shifts in climate. This study presents a multidisciplinary analysis of two sediment cores from the overdeepened Wehntal Valley at ...
Johannes M. Miocic, Nigel Thew, Ruth Drescher‐Schneider, Hans Rudolf Graf, Marlu Kühn, Frank Preusser, Werner H. Schoch, Lucia Wick, Heinz Furrer   +8 more
wiley   +1 more source

Lodge moraines: a common yet underreported end‐moraine type—a review

Boreas, Volume 55, Issue 4, Page 906-931, October 2026.
Lodge moraines are a distinct genetic type of end moraine formed by submarginal accretion of subglacial till; they are some of the largest end moraines in the world. Although underreported in the literature, they are of equal importance to push, dump and hummocky end moraines. End moraines are formed at glacier ice margins and show the extent of former
Mark D. Johnson, Jose Luis Antinao, Ívar Örn Benediktsson, David A. Grimley, Carrie E. Jennings, Henry M. Loope, Tom V. Lowell, David M. Mickelson, Peter L. Moore, Thomas A. Nash, J. Elmo Rawling III, Jamey Stutz   +11 more
wiley   +1 more source

Dispersal, source and glass chemistry of a third tephra unit within Iceland's Settlement Layer

Boreas, Volume 55, Issue 4, Page 1143-1159, October 2026.
Tephra layers may be studied to understand the dynamics and sequence of past explosive volcanism. In Iceland, the distinctive Settlement Layer (AD ~877) underlies almost all archaeological evidence for the Norse Settlement and is preserved in soils across Iceland and as cryptotephra overseas.
Conner A. G. Morison, Guðrún Larsen, Anthony J. Newton, Andrew J. Dugmore   +3 more
wiley   +1 more source

Truncated drumlins and their implication for past sea level reconstructions

Boreas, Volume 55, Issue 4, Page 1228-1247, October 2026.
Coastal erosion of glacigenic sediments, particularly in the form of retreating drumlin bluffs, is a key process in paraglacial landscape evolution during periods of relative sea‐level (RSL) rise. As marine transgression reworks formerly subaerial glacial terrains, drumlins act as discrete sediment sources generating characteristic erosional and ...
Riccardo Arosio, Andrew Finlayson, Guillaume Michel, Dayton Dove   +3 more
wiley   +1 more source

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