Interpreting Gravity, Geoid, and Topography for Convection with Temperature-dependent Viscosity - Application to Surface-features on Venus

L MORESI, B PARSONS

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

While Venus and Earth are similar in size, Venus does not appear to have developed the same system of mobile surface plates which dominates convective heat transfer from the interior of Earth. Numerical models with temperature dependent viscosity do not produce plate boundaries and are more closely reminiscent of Venus than Earth. We demonstrate that many puzzling aspects of surface features on Venus are also found in the analysis of the surface observables in these models. Despite having no strong lithosphere, our calculations exhibit very high geoid/topography ratios and uncompensated short-wavelength topography. Surface heat flux values are not required to be very different from Earth-scaled values, and the mantle remains below the likely solidus.
Original languageEnglish
Pages (from-to)21155-21171
Number of pages17
JournalJournal of Geophysical Research: Planets
Volume100
Issue numberE10
DOIs
Publication statusPublished - 25 Oct 1995

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