Results 201 to 210 of about 46,929 (244)

Greenland ice sheet mass balance: a review

Reports on Progress in Physics, 2015
Over the past quarter of a century the Arctic has warmed more than any other region on Earth, causing a profound impact on the Greenland ice sheet (GrIS) and its contribution to the rise in global sea level. The loss of ice can be partitioned into processes related to surface mass balance and to ice discharge, which are forced by internal or external ...
Khan, Shfaqat Abbas, Aschwanden, Andy, Bjørk, Anders Anker, Wahr, John, Kjeldsen, Kristian Kjellerup, Kjær, Kurt H.   +5 more
openaire   +3 more sources

Holocene thinning of the Greenland ice sheet

Nature, 2009
On entering an era of global warming, the stability of the Greenland ice sheet (GIS) is an important concern, especially in the light of new evidence of rapidly changing flow and melt conditions at the GIS margins. Studying the response of the GIS to past climatic change may help to advance our understanding of GIS dynamics. The previous interpretation
Vinther, Bo Møllesøe, Buchardt, Susanne Lilja, Clausen, Henrik Brink, Dahl-Jensen, Dorthe, Johnsen, Sigfus Johann, Andersen, Katrine Krogh, Blunier, Thomas, Rasmussen, Sune Olander, Steffensen, Jørgen Peder, Svensson, Anders, Fisher, D. A., Koerner, R. M., Raynaud, D., Lipenkov, V.   +13 more
openaire   +3 more sources

Greenland ice sheet hydrology

Progress in Physical Geography: Earth and Environment, 2013
Understanding Greenland ice sheet (GrIS) hydrology is essential for evaluating response of ice dynamics to a warming climate and future contributions to global sea level rise. Recently observed increases in temperature and melt extent over the GrIS have prompted numerous remote sensing, modeling, and field studies gauging the response of the ice sheet
openaire   +1 more source

Growth of Greenland Ice Sheet: Interpretation

Science, 1989
An observed 0.23 m/year thickening of the Greenland ice sheet indicates a 25% to 45% excess ice accumulation over the amount required to balance the outward ice flow. The implied global sea-level depletion is 0.2 to 0.4 mm/year, depending on whether the thickening is only recent (5 to 10 years) or longer term (< 100 years).
openaire   +2 more sources

Past Temperatures Directly from the Greenland Ice Sheet

Science, 1998
A Monte Carlo inverse method has been used on the temperature profiles measured down through the Greenland Ice Core Project (GRIP) borehole, at the summit of the Greenland Ice Sheet, and the Dye 3 borehole 865 kilometers farther south. The result is a 50,000-year-long temperature history at GRIP and a 7000-year history at Dye 3.
Dahl-Jensen, Dorthe, Mosegaard, Klaus Edvard, Gundestrup, Niels Steen, Clow, Gary D., Johnsen, Sigfus Johann, Hansen, Aksel Walløe, Balling, Niels   +6 more
openaire   +3 more sources

The Greenland Ice Sheet Reacts

Science, 2000
The Greenland Ice Sheet holds a substantial part of Earth's fresh water, and melting of the sheet contributes to sea level rise. [Dahl-Jensen][1] discusses the reports by [ Krabill et al .][2] and [ Thomas et al .][3], which shed light on short- and long-term surface elevation changes of the ice sheet.
openaire   +1 more source

Mercury in the Greenland Ice Sheet

Nature, 1978
REPORTS of the mercury content of the Greenland Ice Cap have varied within one or two orders of magnitude. Weiss et al.1 found an increase from about 50 ng per kg in ancient deposit layers to about 100 ng per kg in surface samples from 1964 to 1965, and concluded that there was an increase in man's global input of mercury to the atmosphere.
HELGE APPELQUIST, KIRSTEN OTTAR JENSEN, TORBEN SEVEL, CLAUS HAMMER   +3 more
openaire   +1 more source

Is the Greenland Ice Sheet bistable?

Paleoceanography, 1995
Ice core work on Greenland has produced dramatic evidence for an instability of the climate system in the North Atlantic sector. In this paper, we provide climate modeling results indicating another possible example of a multiple equilibrium climate state, where such behavior might apply to the ice sheet itself.
Thomas J. Crowley, Steven K. Baum
openaire   +1 more source

Folding in the Greenland Ice Sheet

Journal of Geophysical Research: Solid Earth, 1987
The deformation of layering into folds is modeled for a linear viscous medium moving over a décollement. Folds are generated by flow variations caused by relief on the décollement, variations in friction, or both. The model is applied to folds forming now in the Greenland Ice Sheet near Dye 3, for which more complete data are available than for ...
I. M. Whillans, K. C. Jezek
openaire   +1 more source

ICE CORES | Dynamics of the Greenland Ice Sheet

2007
The Greenland ice sheet is the largest ice sheet in the Northern Hemisphere. It plays an important role in climate research because of its location in the North Atlantic, which is a region thought to play a key role in climate changes on Earth. Because snow accumulation rates in the central areas have been sufficiently high, annual layers may be ...
Hvidberg, C. S., Svensson, A., Buchardt, S. L.   +2 more
openaire   +2 more sources