The polar contribution to the heat flow of Io |
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| Authors: | Glenn J Veeder Dennis L Matson Torrence V Johnson Ashley G Davies Diana L Blaney |
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| Institution: | Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USA |
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| Abstract: | Polar brightness temperatures on Io are higher than expected for any passive surface heated by absorbed sunlight. This discrepancy implies large scale volcanic activity from which we derive a new component of Io's heat flow. We present a ‘Three Component’ thermal background, infrared emission model for Io that includes active polar regions. The widespread polar activity contributes an additional ∼0.6 W m−2 to Io's heat flow budget above the ∼2.5 W m−2 from thermal anomalies. Our estimate for Io's global average heat flow increases to ∼3±1 W m−2 and ∼1.3±0.4×1014 watts total. |
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| Keywords: | Io Volcanism Thermal Infrared |
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