Inland Ice Sheet Thinning due to Holocene Warmth
نویسندگان
چکیده
منابع مشابه
Dynamic inland propagation of thinning due to ice loss at the margins of the Greenland ice sheet
Mass-balance analysis of the Greenland ice sheet based on surface elevation changes observed by the European Remote-sensing Satellite (ERS) (1992–2002) and Ice, Cloud and land Elevation Satellite (ICESat) (2003–07) indicates that the strongly increased mass loss at lower elevations (<2000m) of the ice sheet, as observed during 2003–07, appears to induce interior ice thinning at higher elevation...
متن کاملMid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet
Establishing the trajectory of thinning of the West Antarctic ice sheet (WAIS) since the last glacial maximum (LGM) is important for addressing questions concerning ice sheet (in)stability and changes in global sea level. Here we present detailed geomorphological and cosmogenic nuclide data from the southern Ellsworth Mountains in the heart of the Weddell Sea embayment that suggest the ice shee...
متن کاملRapid Holocene thinning of an East Antarctic outlet glacier driven by marine ice sheet instability
Outlet glaciers grounded on a bed that deepens inland and extends below sea level are potentially vulnerable to 'marine ice sheet instability'. This instability, which may lead to runaway ice loss, has been simulated in models, but its consequences have not been directly observed in geological records. Here we provide new surface-exposure ages from an outlet of the East Antarctic Ice Sheet that...
متن کاملHolocene evolution of the western Greenland Ice Sheet: Assessing geophysical ice-sheet models with geological reconstructions of ice-margin change
Geophysical ice-sheet models are used to predict future ice-sheet dimensions and, in turn, these projections help estimate the magnitude of eustatic sea-level rise. Before models can confidently predict icesheet behavior, they must be validated by being able to duplicate the geological record of ice-sheet change. Here, we review geological records of Greenland Ice Sheet (GrIS) change, with emph...
متن کاملGreenland Ice Sheet: High-Elevation Balance and Peripheral Thinning.
Aircraft laser-altimeter surveys over northern Greenland in 1994 and 1999 have been coupled with previously reported data from southern Greenland to analyze the recent mass-balance of the Greenland Ice Sheet. Above 2000 meters elevation, the ice sheet is in balance on average but has some regions of local thickening or thinning. Thinning predominates at lower elevations, with rates exceeding 1 ...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1979
ISSN: 0022-1430,1727-5652
DOI: 10.3189/s0022143000014994