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Atmospheric effects in the derivation of geoid-generated gravity anomalies

Lookup NU author(s): Dr Robert Tenzer, Emeritus Professor Pavel Novak, Professor Philip Moore

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Abstract

Parameters of the gravity field harmonics outside the geoid are sought in solving the Stokes boundary-value problem while harmonics outside the Earth in solving the Molodensky boundary-value problem. The gravitational field generated by the atmosphere is subtracted from the Earth's gravity field in solving either the Stokes or Molodensky problem. The computation of the atmospheric effect on the ground gravity anomaly is of a particular interest in this study. In this paper in particular the effect of atmospheric masses is discussed for the Stokes problem. In this case the effect comprises two components, specifically the direct and secondary indirect atmospheric effects. The numerical investigation is conducted at the territory of Canada. Numerical results reveal that the complete effect of atmosphere on the ground gravity anomaly varies between 1.75 and 1.81 mGal. The error propagation indicates that precise determination of the atmospheric effect on the gravity anomaly depends mainly on the accuracy of the atmospheric mass density distribution model used for the computation. © StudiaGeo s.r.o. 2006.


Publication metadata

Author(s): Tenzer R, Novak P, Moore P, Vajda P

Publication type: Article

Publication status: Published

Journal: Studia Geophysica et Geodaetica

Year: 2006

Volume: 50

Issue: 4

Pages: 583-593

ISSN (print): 0039-3169

ISSN (electronic): 1573-1626

Publisher: Springer Netherlands

URL: http://dx.doi.org/10.1007/s11200-006-0036-6

DOI: 10.1007/s11200-006-0036-6


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