Results 91 to 100 of about 46,929 (244)

Mechanisms of Surface Meltwater Ponding and Drainage on the Greenland Ice Sheet Revealed Using SkySat Imagery and Deep Learning

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract Surface meltwater impacts Greenland Ice Sheet mass balance indirectly by reducing albedo and promoting hydrofracture. However, fully understanding both processes requires accurate mapping of small‐scale features such as ponds, channels, and moulins that govern meltwater formation and drainage. Here we investigate surface water dynamics at high
J. C. Ryan, R. T. Datta, S. W. Cooley
wiley   +1 more source

Using glacier seismicity for phase velocity measurements and Green's function retrieval [PDF]

, 2017
High-melt areas of glaciers and ice sheets foster a rich spectrum of ambient seismicity. These signals not only shed light on source mechanisms (e.g. englacial fracturing, water flow, iceberg detachment, basal motion) but also carry information about ...
Kilb, Debi, Lecointre, Albanne, Roeoesli, Claudia, Roux, Philippe, Roux, Pierre-François, Walter, Fabian   +5 more
core   +1 more source

Differing Controls on the Cycling of Neodymium in the Atlantic and the Pacific

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Neodymium (Nd) isotopes ratios are regarded as a key proxy for past ocean circulation despite unsettled debate on marine Nd cycle controls, which opposes a “top‐down” hypothesis (surface sources dominate) and a “bottom‐up” hypothesis (sedimentary sources dominate), each with important implications for Nd isotope proxy interpretation.
Paige M. Wise, Benoît Pasquier, Seth G. John, Sophia K. V. Hines   +3 more
wiley   +1 more source

Chemistry of Greenland Ice Sheet studied

Eos, Transactions American Geophysical Union, 1991
The first ice coring project to include a major emphasis on the study of atmospheric processes and changes in the Greenland Ice Sheet that influence the chemistry of the ice core began in April of this year under the auspices of the Greenland Ice Sheet Project Two (GISP2).
Jean‐Luc Jaffrezo, Jack E. Dibb, Cliff I. Davidson   +2 more
openaire   +1 more source

Feasibility of GNSS-R ice sheet altimetry in Greenland using TDS-1 [PDF]

, 2017
Radar altimetry provides valuable measurements to characterize the state and the evolution of the ice sheet cover of Antartica and Greenland. Global Navigation Satellite System Reflectometry (GNSS-R) has the potential to complement the dedicated radar ...
Cardellach, Estel, Fabra, Fran, Hernández Pajares, Manuel, Li, Weiqiang, Ribó Vedrilla, Serni, Rius, Antonio   +5 more
core   +2 more sources

Trophic Changes off Southwest Greenland During the Holocene and Their Influence on Carbon Burial

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Organic carbon (OC) burial in sediments is partly controlled by catabolic biodegradation and remineralization by heterotrophic bacteria, but long‐term records of these bacterially‐mediated processes have not been available. Here, we use stable hydrogen isotope ratio of the saturated C16 fatty acid (δ2HC16:0) as a proxy of the prevalence of ...
Estelle Allan, Yunfeng Wang, Anne de Vernal, Yves Gélinas, Alfonso O. Mucci, Marit‐Solveig Seidenkrantz, Peter M. J. Douglas   +6 more
wiley   +1 more source

A Greenland-wide empirical reconstruction of paleo ice sheet retreat informed by ice extent markers: PaleoGrIS version 1.0 [PDF]

Climate of the Past
The Greenland Ice Sheet is a large contributor to global sea level rise, and current mass losses are projected to accelerate. However, model projections of future ice sheet evolution are limited by the fact that the ice sheet is not in equilibrium with ...
T. P. M. Leger, C. D. Clark, C. Huynh, S. Jones, J. C. Ely, S. L. Bradley, C. Diemont, A. L. C. Hughes   +7 more
doaj   +1 more source

A summer time series of particulate carbon in the air and snow at Summit, Greenland [PDF]

, 2007
Carbonaceous particulate matter is ubiquitous in the lower atmosphere, produced by natural and anthropogenic sources and transported to distant regions, including the pristine and climate-sensitive Greenland Ice Sheet.
Bergin, M, Dibb, Jack E., Hagler, Gayle S.W., Smith, Eugene A   +3 more
core   +2 more sources

Ice Sheet Dynamics Drive Pronounced Changes in the Subsurface Freshwater‐Saltwater Interface

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Saltwater is migrating into freshwater aquifers globally with water quality and biogeochemical implications, yet saltwater intrusion in glaciated regions is sparsely investigated. Field observations suggest that groundwater head in glaciated systems is influenced by ice sheet forcings and provides evidence that seawater infiltrated into ...
Julia A. Guimond, Aaron A. Mohammed, Barret L. Kurylyk, Michelle A. Walvoord, Victor F. Bense   +4 more
wiley   +1 more source

Constraining the geothermal heat flux in Greenland at regions of radar-detected basal water

Journal of Glaciology, 2019
The spatial distribution of basal water critically impacts the evolution of ice sheets. Current estimates of basal water distribution beneath the Greenland Ice Sheet (GrIS) contain large uncertainties due to poorly constrained boundary conditions ...
Soroush Rezvanbehbahani, Leigh A. Stearns, C. J. van der Veen, Gordon K. A. Oswald, Ralf Greve   +4 more
doaj   +1 more source