A new approach to computing accurate gravity time variations for a realistic earth model with lateral heterogeneities

Details A new approach to computing accurate gravity time variations for a realistic earth model with lateral heterogeneities A new approach to computing accurate gravity time variations for a realistic earth model with lateral heterogeneities

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005geoji.162..570m&link_type=abstract

Geophysical Journal International, Volume 162, Issue 2, pp. 570-574.

Physics

6

Scientific paper

We have developed a new elasto-gravitational earth model able to take into account lateral variations, deviatoric pre-stresses and topographies. As a first application, we assume an ellipsoidal earth with hydrostatic pre-stresses, and validate and discuss our numerical model by comparison with previous studies on the M2 body tide. We then study the response of the ellipsoidal earth to zonal atmospheric loads, and find that global lateral variations within the Earth, such as ellipticity, have a weak impact (about 1 per cent) on the elasto-gravitational deformations induced by atmospheric loading.

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