How Baltic Sea water mass variations mask the postglacial rebound signal in CHAMP and GRACE gravity field solutions

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Contributors

Abstract

The postglacial rebound (PGR) in Fennoscandia is an attractive signal for the detection of time-variable gravity with CHAMP and GRACE. However, the separation from other geophysical signals is a challenge. We study the influence of oceanographic variations of the Baltic Sea. Using a precise high-resolution oceanographic model we analyze its water mass variations and the resulting geoid signal. The geoid signal is similar to the postglacial rebound signal in spatial pattern and in magnitude. Hence we show that the PGR. detection from satellite gravity data will be corrupted by Baltic Sea oceanographic variations unless they are accounted for. Our study suggests to correct for the Baltic Sea signal using external data.

Details

Original languageEnglish
Title of host publicationEarth observation with CHAMP
EditorsChristoph Reigber, Hermann Lühr, Peter Schwintzer, Jens Wickert
Place of PublicationBerlin
PublisherSpringer Link
Pages181-186
Number of pages6
ISBN (electronic)978-3-540-26800-0
ISBN (print)978-3-540-22804-2
Publication statusPublished - 2005
Peer-reviewedYes

External IDs

researchoutputwizard legacy.publication#5360
Scopus 33745089161
ORCID /0000-0001-5797-244X/work/142246492

Keywords

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