Ice mass balance and Antarctic gravity change: Satellite and terrestrial perspectives

被引：3

作者：

Ivins, ER ^{[1
]}

Rignot, E ^{[1
]}

Wu, XP ^{[1
]}

James, TS ^{[1
]}

Casassa, G ^{[1
]}

机构：

[1] Jet Propuls Lab, Pasadena, CA 91109 USA

来源：

EARTH OBSERVATION WITH CHAMP: RESULTS FROM THREE YEARS ORBIT | 2005年

关键词：

CHAMP; GRACE; sealevel rise; cryosphere;

D O I：

10.1007/3-540-26800-6_1

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Recent advances in the spatial and temporal retrieval of land-based cryospheric change information south of 42.5degrees allow fairly robust, construction of forward model predictions of the time-rate of change in gravity. A map-view prediction is presented for the time-rate of change in geoid. dN/dt, that, might, be retrieved from the currently orbiting gravity space craft.. CHAMP (Challenging Mini-Satellite PayIoad for Geophysical Research and Application) and/or GRACE (Gravity Recovery and Climate Experiment). Complementary computation of the surface gravity change, ddeltag/dt, is also presented. The latter call be recovered from terrestrial absolute gravity measurements. Also, the computed rate of change Stokes coefficients for degree and order l, m 1-12 may be used as reliable estimates of the Southern Hemisphere cryospheric change contribution to the global low-degree harmonic variability recorded in multidecadal satellite laser ranging (SLR) data sets.

引用

页码：3 / 12

页数：10

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