Thermal models for basaltic volcanism on Io

L. Keszthelyil, Alfred S. McEwen

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We present a new model for the thermal emissions from active basaltic eruptions on Io. While our methodology shares many similarities with previous work, it is significantly different in that (1) it uses a field tested cooling model and (2) the model is more applicable to pahoehoe flows and lava lakes than fountain-fed, channelized, 'a'a flows. This model demonstrates the large effect lava porosity has on the surface cooling rate (with denser flows cooling more slowly) and provides a preliminary tool for examining some of the hot spots on Io. The model infrared signature of a basaltic eruption is largely controlled by a single parameter, τ, the average survival time for a lava surface. During an active eruption surfaces are quickly covered or otherwise destroyed and typical values of τ for a basaltic eruption are expected to be on the order of 10 seconds to 10 minutes. Our model suggests that the Galileo SSI eclipse data are consistent with moderately active to quiescent basaltic lava lakes but are not diagnostic of such activity.

Original languageEnglish (US)
Article number97GL01368
Pages (from-to)2463-2466
Number of pages4
JournalGeophysical Research Letters
Volume24
Issue number20
StatePublished - 1997

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Io
volcanism
lava
volcanic eruptions
volcanic eruption
cooling
lakes
infrared signatures
pahoehoe
surface cooling
lake
eclipses
thermal emission
hot spot
porosity
methodology

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Keszthelyil, L., & McEwen, A. S. (1997). Thermal models for basaltic volcanism on Io. Geophysical Research Letters, 24(20), 2463-2466. [97GL01368].

Thermal models for basaltic volcanism on Io. / Keszthelyil, L.; McEwen, Alfred S.

In: Geophysical Research Letters, Vol. 24, No. 20, 97GL01368, 1997, p. 2463-2466.

Research output: Contribution to journalArticle

Keszthelyil, L & McEwen, AS 1997, 'Thermal models for basaltic volcanism on Io', Geophysical Research Letters, vol. 24, no. 20, 97GL01368, pp. 2463-2466.
Keszthelyil, L. ; McEwen, Alfred S. / Thermal models for basaltic volcanism on Io. In: Geophysical Research Letters. 1997 ; Vol. 24, No. 20. pp. 2463-2466.
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