Physics
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.2243s&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 22, p. 2243-2246.
Physics
50
Free Convection, Geochemistry, Phase Transformations, Planetary Geology, Planetary Mantles, Venus (Planet), Olivine, Perovskites, Spinel, Thermal Expansion, Two Dimensional Models
Scientific paper
The effects of multiple phase-transitions on the dynamics of the Venusian mantle are investigated with a 2D finite-element method. A depth-dependent thermal expansivity has been employed in a purely basal heating configuration with an aspect-ratio of four. The addition of the olivine-spinel transition promotes layered convection more so than models with a single spinel-perovskite phase-change. The shifts in the phase-transition depths and the presence of a conductive lid increase the tendency of the Venusian mantle circulation to flow through the transition zone. The potentially lower Rayleigh number in Venus from lack of volatiles enhances whole mantle convection. The style of convection in Venus may have changed from layered convection in the past to whole-mantle convection today. This transition might have been responsible for the major resurfacing event on Venus.
Steinbach Volker
Yuen David A.
No associations
LandOfFree
The effects of multiple phase transitions on Venusian mantle convection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The effects of multiple phase transitions on Venusian mantle convection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effects of multiple phase transitions on Venusian mantle convection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1553083