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  Combined InSAR and GRACE estimate of West Antarctic mass changes

Sasgen, I., Martinec, Z., Bamber, J., Fleming, K. (2008): Combined InSAR and GRACE estimate of West Antarctic mass changes, (Geophysical Research Abstracts; Vol. 10, EGU-A-03731 (Oral)), General Assembly European Geosciences Union (Vienna, Austria 2008).

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_236822 Version Permalink: -
Genre: Conference Paper

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 Creators:
Sasgen, Ingo1, Author              
Martinec, Z.2, Author
Bamber, J.2, Author
Fleming, Kevin3, Author              
1.3 Earth System Modelling, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, Author              
Affiliations:
1Deutsches GeoForschungsZentrum, ou_persistent13              
2External Organizations, ou_persistent22              
32.1 Physics of Earthquakes and Volcanoes, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146029              

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Free keywords: 13-18 April 2008
 DDC: 550 - Earth sciences
 Abstract: We provide mass balance estimates for seven West Antarctic drainage basins using InSAR and GRACE Level 2 data.We combine both data sets in a constrained gravity- field inversion, which involves forward modelling of geoid changes based on mass balance estimates and their uncertainties from InSAR. We determine the spatial resolution of GRACE over Antarctica and use it to calculate unconstrained (GRACE only) mass balance estimates for a reduced number of drainage basins. We compare InSAR, constrained and unconstrained mass change rates, estimate their uncertainties and discuss the influence of glacial-isostatic adjustment and inter-annual mass variations on our results.

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 Dates: 2008
 Publication Status: Finally published
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 Identifiers: eDoc: 11224
GFZPOF: 1.0 Globale Prozesse und Geomonitoring
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Title: General Assembly European Geosciences Union (Vienna, Austria 2008)
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Title: Geophysical Research Abstracts ; Vol. 10, EGU-A-03731 (Oral)
Source Genre: Series
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