Determination of grounding line on the Amery Ice Shelf using Sentinel-1 radar interferometry data

Delineation of the grounding line (GL) is necessary for calculating the mass balance of Antarctica, but GL measurements for most of the continent remain at a relatively coarse level. We used Sentinel-1 constellation data to map the GL of the Amery Ice Shelf (AIS) using double-differential synthetic...

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Bibliographic Details
Main Authors: Haobo, Lei, Chunxia, Zhou, Yiming, Chen
Format: Article in Journal/Newspaper
Language:English
Published: Polar Research Institute of China - PRIC 2017
Subjects:
Cryosphere
Antarctic
Amery
Amery Ice Shelf
Advances in Polar Science
Antarc*
Antarctica
Ice Shelf
Polar Science
Online Access:http://library.arcticportal.org/2639/
http://library.arcticportal.org/2639/1/A180205000006.pdf
Description
Summary:Delineation of the grounding line (GL) is necessary for calculating the mass balance of Antarctica, but GL measurements for most of the continent remain at a relatively coarse level. We used Sentinel-1 constellation data to map the GL of the Amery Ice Shelf (AIS) using double-differential synthetic aperture radar interferometry. The ice thickness anomaly deduced from hydrostatic equilibrium and existing Antarctic GL products is compared with our result. With this new and very accurate GL, we detected new ice rises in the north of the AIS. Our new measurement shows no major change of the AIS GL, particularly in the southernmost part.

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