Mass balance and surface movement of the Greenland Ice Sheet at Summit, Central Greenland

被引：17

作者：

Hvidberg, CS ^{[1
]}

Keller, K ^{[1
]}

Gundestrup, NS ^{[1
]}

Tscherning, CC ^{[1
]}

Forsberg, R ^{[1
]}

机构：

[1] KORT & MATRIKELSTYRELSEN,GEODYNAM DEPT,DK-2400 COPENHAGEN NV,DENMARK

来源：

GEOPHYSICAL RESEARCH LETTERS | 1997年 / 24卷 / 18期

关键词：

D O I：

10.1029/97GL02280

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

During the GRIP deep drilling in Central Greenland, the ice sheet topography and surface movement at Summit has been mapped with GPS. Measurements of the surface velocity are presented for a strain net consisting of 13 poles at distances of 25-60 km from the GRIP site. Some results are: The GRIP site is located approximately 2 km NW of the topographic summit; the surface velocity at the GISP 2 site is 1.7 m/yr in the W direction. The present mass balance at Summit is calculated to be -0.03+/-0.04 m/yr, i.e. close to steady state. This result is the best now available for Summit. A small thinning rate might be a transient response of the Greenland Ice Sheet due to the temperature increase at the Wisconsin-Holocene transition.

引用

页码：2307 / 2310

页数：4

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