Combining satellite altimetry and gravimetry data to improve Antarctic mass balance and gia estimates

Combining satellite altimetry and gravimetry data to improve Antarctic mass balance and gia estimates

Gunter, B.C.
Didova, O.
Riva, R.E.M.
van den Broeke, M.R.
Ligtenberg, S.R.M.
Lenaerts, J.T.M.
King, M.
Urban, T.

Civil Engineering and Geosciences

Geoscience & Remote Sensing

2012-11-13

This study explores an approach that simultaneously estimates Antarctic mass balance and glacial isostatic adjustment (GIA) through the combination of satellite gravity and altimetry data sets. The results improve upon previous efforts by incorporating reprocessed data sets over a longer period of time, and now include a firn densification model to convert the altimetry volume estimates into mass. When the GIA models created from the combination approach were compared to insitu GPS ground station displacements, the vertical rates estimated showed good agreement after a systematic bias was removed from the computed GIA models. The new models suggest the potential for GIA uplift in the Amundsen Sea Sector, as well as the possible subsidence in large parts of East Antarctica.

http://resolver.tudelft.nl/uuid:c3354573-09ba-4020-b095-8fe8a863966d

European Space Agency (ESA)

978-92-9092-276-6

Proceedings of the ESA Earth Observation and Cryosphere Science, Frascati, Italy, 13-16 November 2012; ESA SP-712

Institutional Repository

conference paper

(c) 2012 The Author(s)
European Space Agency (ESA)