Isostatic stability of the East Antarctic station Dumont d’Urville from long-term geodetic observations and geophysical models
Isostatic stability of the East Antarctic station Dumont d’Urville from long-term geodetic observations and geophysical models
复制标题
根据长期大地测量观测和地球物理模型得出的东南极杜蒙迪维尔站的等静压稳定性
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
J. Hinderer
中科院分区：
文献类型：
--
作者：
M. Amalvict;P. Willis;G. Wöppelmann;E. Ivins;M. Bouin;L. Testut;J. Hinderer
地壳垂直位移的大地测量与绝对重力变化相结合，提供了对当今冰川变化的区别测量，而不是由冰川均衡调整（GIA）引起的更深层的岩石运动。在Dumont d 'Urville的东南极站，我们比较了连续的DORIS（1993.0 - 2006.0）和全球定位系统（GPS）（1999.0-2005.7）数据的位移，以及观测到的绝对重力变化（2000-2006），与GIA模型预测的垂直位移和重力变化。大地测量结果具有相互的自一致性，表明了站点的稳定性，并提供了GIA和长期冰质量变化的上界。GIA模型预测的岩石运动幅度往往比观测到的要大，我们得出的结论是，与南极洲西部相比，南极洲的这一部分可能正在经历冰质量的轻微增加。
Geodetic measurements of the vertical crustal displacement collocated with absolute gravity changes provide a discriminatory measurement of present-day glacial changes, versus more deeply seated rock motions caused by glacial isostatic adjustment (GIA). At the East Antarctic station of Dumont d’Urville, we compare the displacements derived from continuous DORIS (1993.0– 2006.0) and Global Positioning System (GPS) (1999.0–2005.7) data, and observed changes in absolute gravity (2000–2006), with the predicted vertical displacement and change in gravity from GIA modelling. The geodetic results have mutual self-consistency, suggest station stability and provide upper bounds on both GIA and secular ice mass changes. The GIA models tend to predict amplitudes of rock motion larger than those observed, and we conclude that this part of Antarctica is probably experiencing a slight gain in ice mass, in contrast to West Antarctica.
影响因子：
18.3
作者：
Rignot, Eric;Bamber, Jonathan L.;Van Meijgaard, Erik
通讯作者：
Van Meijgaard, Erik