New Antarctic gravity anomaly grid for enhanced geodetic and geophysical studies in Antarctica


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Wilfried.Jokat [ at ] awi.de

Abstract

Gravity surveying is challenging in Antarctica because of its hostile environment and inaccessibility. Nevertheless, many ground-based, airborne, and shipborne gravity campaigns have been completed by the geophysical and geodetic communities since the 1980s. We present the first modern Antarctic-wide gravity data compilation derived from 13 million data points covering an area of 10 million km2, which corresponds to 73% coverage of the continent. The remove-compute-restore technique was applied for gridding, which facilitated leveling of the different gravity data sets with respect to an Earth gravity model derived from satellite data alone. The resulting free-air and Bouguer gravity anomaly grids of 10 km resolution are publicly available. These grids will enable new high-resolution combined Earth gravity models to be derived and represent a major step forward toward solving the geodetic polar data gap problem. They provide a new tool to investigate continental-scale lithospheric structure and geological evolution of Antarctica.



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Article
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ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
39519
DOI 10.1002/2015GL067439

Cite as
Scheinert, M. , Ferraccioli, F. , Schwabe, J. , Bell, R. , Studinger, M. , Damaske, D. , Jokat, W. , Aleshkova, N. , Jordan, T. , Leitchenkov, G. , Blankenship, D. , Damiani, T. , Young, D. , Cochran, J. and Richter, T. (2016): New Antarctic gravity anomaly grid for enhanced geodetic and geophysical studies in Antarctica , Geophysical Research Letters, 43 (2), pp. 600-610 . doi: 10.1002/2015GL067439


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