Physics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..538g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 14, May 1987, p. 538-541.
Physics
39
Heat Transfer, Lithosphere, Planetary Craters, Venus (Planet), Volcanology, Conductive Heat Transfer, Density (Number/Volume), Radar Imagery, Venera Satellites, Venus, Lithosphere, Heat, Transport, Impact Craters, Density, Size, Frequency, Distribution, Volcanism, Resurfacing, Production Rate, Flows, Surface, Flux, Interior, Conduction, Hypotheses, Venera Missions, Cratering, Calculations, Spacecraft Observations
Scientific paper
Based on the observed density of impact craters on the Venus surface obtained from Venera 15-16 radar images, a formalism to estimate the upper bounds on the contributions made to lithospheric heat transport by volcanism and lithospheric recycling is presented. The Venera 15-16 data, if representative of the entire planet, limit the average rate of volcanic resurfacing on Venus to less than 2 cu km/yr (corresponding to less than 1 percent of the global heat loss), and limit the rate of lithospheric recycling to less than 1.5 sq km/yr (and probably to less than 0.5 sq km/yr), corresponding to 25 percent (and to 9 percent) of the global heat loss. The present results indicate that heat loss at lithospheric levels in Venus is dominated by conduction.
Grimm Robert E.
Solomon Stanley C.
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