Sulfur flows of RA Patera, Io

Details Sulfur flows of RA Patera, Io Sulfur flows of RA Patera, Io

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...60..685p&link_type=abstract

Icarus (ISSN 0019-1035), vol. 60, Dec. 1984, p. 685-700.

Physics

41

Flow Characteristics, Io, Lava, Sulfur, Volcanology, Color, Radiative Heat Transfer, Viscosity, Voyager 1 Spacecraft

Scientific paper

Voyager 1 imaging data have been used to investigate the color and morphology of several radial flow-like features at Ra Patera, a broad volcanic structure at approximately 8° latitude and 325° longitude on the Galilean satellite Io (J1). It was found that downstream progressions of flow color and morphology are consistent with lava of a predominately sulfur composition cooling radiatively and erupting in the range of 470 to 520K at effusion rates at 1010 to 1011cm3/sec. This implies global resurfacing rates by volcanic flows on Io of the order of 1 cm/year. Calculated energy content and effusion rates for flows at Ra Patera, using the physical parameters of sulfur, are of the order of the largest known terrestrial basaltic eruptions and are consistent with calculations of globally available energy.

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