Results 91 to 100 of about 7,235 (213)

Seismic ground vibrations give advanced early-warning of subglacial floods

Nature Communications, 2020
Subglacial lakes and jökulhlaups (glacier outburst floods) are common in volcanic and glaciated environments, and can pose potential threats to communities living downstream. Here, the authors find that seismic tremor signals during subglacial floods can
Eva P. S. Eibl, Christopher J. Bean, Bergur Einarsson, Finnur Pàlsson, Kristin S. Vogfjörd   +4 more
doaj   +1 more source

Ice-margin and meltwater dynamics during the mid-Holocene in the Kangerlussuaq area of west Greenland [PDF]

, 2017
Land-terminating parts of the west Greenland ice sheet have exhibited highly dynamic meltwater regimes over the last few decades including episodes of extremely intense runoff driven by ice surface ablation, ponding of meltwater in an increasing number ...
Adam, Aebly, Anderson, Andrews, Bartholomew, Brennand, Burke, Carrivick, Carrivick, Carrivick, Carrivick, Carrivick, Clark, De Geer, Donner, Dyke, Eisner, Evans, Evans, Fitzpatrick, Forman, Gool, Graham, Greenwood, Greenwood, Hambrey, Harper, Humlum, Ingólfsson, Kleman, Kleman, Kleman, Knight, Lee, Levy, Lindén, Livingstone, Lloyd, Long, Long, Lovell, Margold, Margold, Mernild, Mernild, Morlighem, Nitsche, Noormets, Ozols, Palmer, Pedersen, Perkins, Phillips, Rinterknecht, Roberts, Russell, Scholz, Sollid, Storms, Storrar, Storrar, Sugden, Syverson, Tatenhove, Ten Brink, Wal, Warren, Wellner, Willemse, Winsborrow, Young, Young   +71 more
core   +2 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

Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems [PDF]

, 2017
This paper presents a glacial geomorphological map of glacial lineations, ribbed terrain, moraines, meltwater channels (subglacial and ice-marginal/proglacial), eskers, glaciofluvial deposits, ice-contact outwash fans and deltas and abandoned shorelines ...
Kleman J., Robert D. Storrar, St-Onge D. A., Stephen J. Livingstone   +3 more
core   +1 more source

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

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

Determining Ice-Sheet Uplift Surrounding Subglacial Lakes with a Viscous Plate Model

Frontiers in Earth Science, 2017
We develop a viscous model of plate bending suitable for studying ice-sheet flexure due to subglacial lake filling and draining, and apply this model to determine the area of ice-sheet uplift surrounding a subglacial lake.
Ryan T. Walker, Ryan T. Walker, Mauro A. Werder, Christine F. Dow, Christine F. Dow, Sophie M. J. Nowicki   +5 more
doaj   +1 more source

High basal melting forming a channel at the grounding line of Ross Ice Shelf, Antarctica [PDF]

, 2016
Antarctica's ice shelves are thinning at an increasing rate, affecting their buttressing ability. Channels in the ice shelf base unevenly distribute melting, and their evolution provides insight into changing subglacial and oceanic conditions.
Catania, Ginny, Christianson, Knut, Corr, Hugh F. J., Fricker, Helen A., Marsh, Oliver J., Nicholls, Keith W,, Siegfried, Matthew R.   +6 more
core   +1 more source

Drilling reaches Antarctic subglacial Lake Whillans [PDF]

Eos, Transactions American Geophysical Union, 2013
A decade‐long planning effort to drill through 800 meters of ice to directly and cleanly sample the waters and sediments of subglacial Lake Whillans in West Antarctica succeeded at 5:00 A.M. local time on 28 January. The effort “marks the first successful retrieval of clean whole samples from an Antarctic subglacial lake,” according to a 28 January ...
openaire   +1 more source

A North Greenland‐wide in situ cosmogenic 14C ice sheet chronology since the Lateglacial

Boreas, Volume 55, Issue 2, Page 327-339, April 2026.
Knowledge of the glacial history of the North Greenland Ice Sheet is crucial due to its high sensitivity to climate change. However, because the ice sheet in this region is predominantly cold‐based, resulting in low erosion rates, using 10Be exposure dating to establish reliable ice sheet chronologies has proven very challenging due to nuclide ...
Anne Sofie Søndergaard, Astrid Rosenberg, Mads Faurschou Knudsen, Kristina Hippe, Marcus  Christl, Negar Haghipour, Olivia Steinemann, Kurt H. Kjær, Nicolaj Krog Larsen   +8 more
wiley   +1 more source