Earth gravity up to second order in topography and density - Archive ouverte HAL Access content directly
Journal Articles Physics of the Earth and Planetary Interiors Year : 2005

Earth gravity up to second order in topography and density

(1) , (2)
1
2

Abstract

he gravity potential of a planet is usually expanded up to first order only as a linear function of topography and lateral variations of density. In this article, we extend these expressions up to second order and we estimate the magnitude of the new non-linear terms. We find that they are not negligible when compared to observed values: tens of metres for height anomalies and tens of milligals for gravity anomalies. Therefore, second-order expressions should be taken into account when inverting global gravity data.

Dates and versions

insu-00271517 , version 1 (09-04-2008)

Identifiers

Cite

Frédéric Chambat, Bernard Valette. Earth gravity up to second order in topography and density. Physics of the Earth and Planetary Interiors, 2005, 151 (1-2), pp.89-106. ⟨10.1016/j.pepi.2005.01.002⟩. ⟨insu-00271517⟩
73 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More