Results 61 to 70 of about 1,601 (228)

Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect [PDF]

The Cryosphere, 2014
In January of 2008, during the 53rd Russian Antarctic Expedition, surface snow samples were taken from 13 shallow (0.7 to 1.5 m depth) snow pits along the first tractor traverse from Progress to Vostok stations, East Antarctica.
T. V. Khodzher, L. P. Golobokova, E. Yu. Osipov, Yu. A. Shibaev, V. Ya. Lipenkov, O. P. Osipova, J. R. Petit   +6 more
doaj   +1 more source

Artificial Flooding Leads to Thicker and Brighter Arctic Sea Ice

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract We describe and present results from a 2024/2025 field campaign that is the first to test and observe the impact of flooding and meltwater draining on Arctic sea ice over the winter growth and spring melt seasons. The campaign was conducted in Cambridge Bay, Nunavut, Canada.
Edward Blanchard‐Wrigglesworth, Andrea Ceccolini, Andrew Smith, Andrew Woods, Cían Sherwin, Konrad Borowski, Pascal Martin‐Daguet, Simon Woods, Tom Clipston, Tommaso Di Gioacchino, Molly Wieringa, Jacob Pantling, Kate Oglethorpe, Shaun Fitzgerald, Steven Desch, Hilairy Hartnett, Brendan Kelly, Alison Tan, Bernard Steffin, Isaac Eskind, Brandon Langan, Brent Nakashook, Brian Kavanna, Brodie Larocque, David Kavanna, Roland Emingak, Cecilia M. Bitz   +26 more
wiley   +1 more source

Mechanical analysis of pinning points in the Ross Ice Shelf, Antarctica

Annals of Glaciology, 2019
Ice shelves regulate the rate of ice-sheet discharge along much of the Antarctic coastline. Pinning points, sites of localised grounding within floating ice, can in turn, regulate the flow and thickness of an ice shelf.
Holly Still, Adam Campbell, Christina Hulbe   +2 more
doaj   +1 more source

Origin of Late Noachian‐Early Hesperian Valley Networks on Mars: Insights From Landform Evolution and Ice Sheet Modeling

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Dendritic valley networks on Mars have been cited as evidence for a warm and wet Noachian Mars, permitting rainfall precipitation and surface runoff. However, the climatic conditions required to sustain rainfall on early Mars remain debated.
K. R. Karpenko, J. L. Fastook, J. W. Head, A. D. Howard, C. I. Fassett, J. L. Dickson, K. E. Scanlon, B. D. Boatwright   +7 more
wiley   +1 more source

Continental‐Scale Machine‐Learning Classification of Arctic Glacial Landscapes Using Simple Morphometrics

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 5, May 2026.
Abstract Landscapes formed by glacial erosion have previously been classified based on qualitative interpretation of geomorphic evidence, using aerial photography and field studies. In the current era of high‐resolution elevation data, limited attempts have been made to improve these classifications using quantitative measurements of landscape form (i ...
E. J. Lea, G. J. G. Paxman, F. J. Clubb, N. Ross   +3 more
wiley   +1 more source

Impacts of Glacial Isostatic Adjustment on Antarctic Subglacial Water Routing Since the Last Glacial Maximum

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 5, May 2026.
Abstract The bedrock beneath the Antarctic Ice Sheet has experienced widespread viscoelastic deformation as a response to ice‐sheet changes from the Last Glacial Maximum (LGM) to present day. The combined changes of the ice sheet and the bedrock most likely had impacted subglacial water routes.
Linda Pan, Emma J. MacKie, Jerry X. Mitrovica, Stewart S. R. Jamieson, Olga V. Sergienko, Robert P. Ackert Jr., Kaighin A. McColl   +6 more
wiley   +1 more source

A stratigraphic link across 1100 km of the Antarctic Ice Sheet between the Vostok ice-core site and Titan Dome (near South Pole) [PDF]

, 2000
Isochronous internal ice-sheet layering, measured from airborne 60 MHz radar, was traced between Lake Vostok and the Titan Ice Dome (100 km from South Pole Station), Antarctica. Three layers were selected between Ridge B and Titan Dome, and between Ridge
Siegert, MJ, Hodgkins, R, Siegert, M. J., Hodgkins, R.   +3 more
core   +1 more source

DJ4Earth: Differentiable, and Performance‐Portable Earth System Modeling via Program Transformations

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 5, May 2026.
Abstract Differentiable Earth system models (ESMs) enable powerful applications such as sensitivity analysis, gradient‐based calibration, state estimation, boundary flux inversions, uncertainty quantification, and online machine learning. Reverse‐mode automatic differentiation (AD) efficiently provides gradients for such tasks, yet models have rarely ...
William S. Moses, Gong Cheng, Valentin Churavy, Maximilian Gelbrecht, Milan Klöwer, Joseph Kump, Mathieu Morlighem, Sarah Williamson, Dhruv Apte, Paul Berg, Mosè Giordano, Christopher Hill, Nora Loose, Alexis Montoison, Sri Hari Krishna Narayanan, Avik Pal, Michel Schanen, Simone Silvestri, Greg Wagner, Patrick Heimbach   +19 more
wiley   +1 more source

Antarctic Meltwater‐Stratification Feedback Is Less Pronounced Under High Climate Forcing

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Several studies have shown sub‐surface warming in the Southern Ocean via an increase in meltwater flux from the Antarctic Ice Sheet (AIS), which can lead to a positive feedback through enhanced basal melting. In this study, we investigate how the feedback strength is related to the prevailing climate in a coupled climate–ice‐sheet model.
Moritz Kreuzer, Torsten Albrecht, Willem Huiskamp, Stefan Petri, Johannes Feldmann, Georg Feulner, Ricarda Winkelmann   +6 more
wiley   +1 more source

Reconstruction of ice-sheet changes in the Antarctic Peninsula since the Last Glacial Maximum [PDF]

, 2014
This paper compiles and reviews marine and terrestrial data constraining the dimensions and configuration of the Antarctic Peninsula Ice Sheet (APIS) from the Last Glacial Maximum (LGM) through deglaciation to the present day.
Glasser, N.F., Davies, Bethan J., Emma P. Hocking (7190990), Larter, Robert D., Larter, R.D., Anderson, J.B., John B. Anderson (7190993), Livingstone, Stephen J., Simms, A.R., Roberts, S.J., Ó Cofaigh, Colm, Domack, E., Evans, J., Hillenbrand, Claus-Dieter, James A. Smith (1496818), Livingstone, Stephen, Michael J. Bentley (7190996), Livingstone, S.J., Dowdeswell, Julian, Anderson, John B., Hocking, Emma, Eugene Domack (6507515), Anderson, John, Canals, M., Canals, Miquel, Roberts, Stephen J., Johnson, J.S., O Cofaigh, C., Stephen J. Roberts (7191008), Hillenbrand, C.D., Larter, Robert, Simms, Alexander, Neil F. Glasser (7191002), Hodgson, Dominic A., Smith, J.A., Julian A. Dowdeswell (7190999), Bentley, Michael J., Colm O Cofaigh (7190984), Jeffrey Evans (1254507), Dowdeswell, Julian A., Hocking, Emma P., Simms, Alexander R., Hillenbrand, Claus Dieter, Hodgson, D.A., Smith, James A., Bentley, M.J., Domack, Eugene, Dowdeswell, J.A., Davies, Bethan, Alexander R. Simms (7191011), Stephen J. Livingstone (3691018), Joanne S. Johnson (7190987), Robert D. Larter (7191005), Johnson, Joanne S., Bentley, Michael, Hodgson, Dominic, Bethan J. Davies (2843855), Glasser, Neil, Miquel Canals (186525), Claus-Dieter Hillenbrand (4276453), Dominic A. Hodgson (2043412), Evans, Jeffrey, Glasser, Neil F., Hillenbrand, C-D., Canals, Miguel, Hocking, E.P., Davies, B.J.   +66 more
core   +1 more source