Long-wave tangential stresses in the lithosphere and mantle of Venus

Details Long-wave tangential stresses in the lithosphere and mantle of Venus Long-wave tangential stresses in the lithosphere and mantle of Venus

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986avest..20..202z&link_type=abstract

Astronomicheskii Vestnik (ISSN 0320-930X), vol. 20, July-Sept. 1986, p. 202-211. In Russian.

Astronomy and Astrophysics

Astronomy

2

Gravity Anomalies, Lithosphere, Planetary Geology, Planetary Mantles, Stress Analysis, Venus Surface, Planetary Cores, Zonal Harmonics

Scientific paper

Loading coefficients for anomalous density waves situated on different levels in realistic models of Venus are calculated with consideration given to the asthenosphere. A combined analysis of topographic and nonequilibrium parts of the gravity field allowed the long-wave principal tangential stresses in the lithosphere and mantle to be obtained for zonal harmonics with n ranging from 2 to 8. The stresses in the Venusian lithosphere are approximately equal to 30 bars; in the lower mantle they can reach 45 bars while in the weakened upper mantle, they are of the order of only a few bars. This low tangential stress level in the crust and mantle of Venus suggests that the planetary interior is very hot. It is confirmed that Venus is aseismic.

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