Antarctic ice velocities from GPS locations logged by seismic stations

In 2007–08, seismologists began deploying passive seismic stations over much of the Antarctic ice sheet. These stations routinely log their position by navigation-grade global positioning system (GPS) receivers. This location data can be used to track the stations situated on moving ice. For station...

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Bibliographic Details
Published in:Antarctic science 2015-04, Vol.27 (2), p.210-222
Main Authors: An, Meijian, Wiens, Douglas, An, Chunlei, Shi, Guitao, Zhao, Yue, Li, Yuansheng
Format: Article
Language:English
Subjects:
Glaciers
Global positioning systems
GPS
Ice
Marine
Physical Sciences
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Summary:In 2007–08, seismologists began deploying passive seismic stations over much of the Antarctic ice sheet. These stations routinely log their position by navigation-grade global positioning system (GPS) receivers. This location data can be used to track the stations situated on moving ice. For stations along the traverse from Zhongshan station to Dome A in East Antarctica and at the West Antarctic Ice Sheet divide the estimated velocities of the ice surface based on positions recorded by navigation-grade GPS are consistent with those obtained by high-accuracy geodetic GPS. Most of the estimated velocities have an angle difference of 100 m yr-1 on Thwaites Glacier. Information on ice velocity at three locations for which no data from satellite-based interferometric synthetic aperture radar are available have also been provided using this method.
ISSN:0954-1020
1365-2079
DOI:10.1017/S0954102014000704