Results 31 to 40 of about 3,652,727 (274)

A subglacial water-flow model for West Antarctica [PDF]

Journal of Glaciology, 2009
AbstractThe current generation of continental-scale ice-sheet models cannot successfully reproduce the complex ice/water/sediment interactions of the West Antarctic ice sheet (WAIS) in a physically meaningful manner. The potential of a thin-film-based subglacial water-flow model for incorporation into a continental-scale coupled ice/water flow model of
A.M. Le, Brocq, Payne, AJ, Siegert, MJ, R. B. Alley, No Value   +3 more
openaire   +4 more sources

Antarctic skin temperature warming related to enhanced downward longwave radiation associated with increased atmospheric advection of moisture and temperature

Environmental Research Letters, 2021
We investigate linear trends in Antarctic skin temperatures (temperatures from about the top millimeter of the surface) over the four seasons using ERA5 ensemble mean reanalysis data. During 1950–2020, statistically significant warming occurred over East
Kazutoshi Sato, Ian Simmonds
doaj   +1 more source

High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data

Communications Earth & Environment, 2021
Geothermal heat flow in the polar regions plays a crucial role in understanding ice-sheet dynamics and predictions of sea level rise. Continental-scale indirect estimates often have a low spatial resolution and yield largest discrepancies in West ...
R. Dziadek, F. Ferraccioli, K. Gohl
semanticscholar   +1 more source

Weakening of the pinning point buttressing Thwaites Glacier, West Antarctica

The Cryosphere, 2021
. The Thwaites Eastern Ice Shelf continues to buttresses a significant portion of Thwaites Glacier through contact with a pinning point 40 km offshore of the present grounding line.
C. Wild, K. Alley, A. Muto, M. Truffer, T. Scambos, E. Pettit   +5 more
semanticscholar   +1 more source

Assessment of Antarctic Amplification Based on a Reconstruction of Near-Surface Air Temperature

Atmosphere, 2023
Polar amplification has been a research focus in climate research in recent decades. However, little attention has been paid to Antarctic amplification (AnA). We have examined the variations in annual and seasonal temperature over the Antarctic Ice Sheet
Jiangping Zhu, Aihong Xie, Xiang Qin, Bing Xu, Yicheng Wang   +4 more
doaj   +1 more source

Large Earthquakes in Subduction Zones around the Polar Regions as a Possible Reason for Rapid Climate Warming in the Arctic and Glacier Collapse in West Antarctica

Geosciences, 2023
A correlation is observed between changes in the level of Earth’s seismic activity and increments of the atmospheric methane concentration over the past 40 years. Trigger mechanisms are proposed for methane emissions and glacier collapse in polar regions.
Leopold I. Lobkovsky, Alexey A. Baranov, Igor A. Garagash, Mukamay M. Ramazanov, Irina S. Vladimirova, Yurii V. Gabsatarov, Dmitry A. Alekseev, Igor P. Semiletov   +7 more
doaj   +1 more source

MARINE GEOPHYSICAL RESEARCH IN THE FIRST UKRAINIAN ANTARCTIC EXPEDITIONS: HISTORICAL OUTLINE AND SOME RESULTS

Геологія і корисні копалини Світового океану, 2022
The article is devoted of the 25th anniversary of the First Ukrainian Marine Antarctic Expedition (1997). The short history of development the marine geophysical study of the deep structures of the World Ocean and Antarctica in the S. I.
Solovyov V.D.
doaj   +1 more source

Warm Waters in West Antarctica

Eos, 2017
A recent paper in Reviews of Geophysics describes the atmospheric and oceanic processes that are causing ice loss in the Antarctic.
Turner, John, Gudmundsson, Hilmar
openaire   +2 more sources

Past rates of accumulation in central West Antarctica [PDF]

, 2004
The spatial variation in ice accumulation is critical to the form and stability of ice sheets. In West Antarctica, knowledge of present ice accumulation rates is restricted to sparse measurements and interpolations across data free regions, while ...
Siegert, MJ, Payne, AJ, Siegert, Martin J., Payne, Antony J.   +3 more
core   +1 more source

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

, 2014
We present radio-echo sounding data and satellite imagery, revealing a series of ancient large sub-parallel subglacial channels preserved in the region between the Möller and Foundation Ice Streams, West Antarctica.
Martin J. Siegert, Tom A. Jordan, Rippin, David M., Jordan, Tom A., Ross, N, Siegert, MJ, Corr, HFJ, Siegert, Martin J., Rippin, DM, Le Brocq, Anne, Hugh F.J. Corr, Jordan, TA, Kathryn C. Rose, Le Brocq, Anne M., Rose, Kathryn C., Bingham, RG, Le Brocq, AM, Anne M. Le Brocq, Ross, Neil, Fausto Ferraccioli, Rose, KC, Ferraccioli, F, Ferraccioli, Fausto, Corr, Hugh F.J., Robert G. Bingham, Neil Ross, David M. Rippin, Bingham, Robert G., K.C. Rose (9005840), et al. (281964)   +29 more
core   +1 more source