Volcanic hot spots on Io

correlation with low- albedo calderas.

Alfred S. McEwen, D. L. Matson, T. V. Johnson, L. A. Soderblom

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Comparison of Voyager imaging data with Voyager 1 infrared observations (IRIS) and with ground-based telescopic infrared data demonstrates a strong correlation between hot spots and low-albedo features (reflectivity = or <0.3 in all visual wavelengths) on Io. Most of these low-albedo areas occur on the floors of volcanic calderas, and many are associated with active or recent volcanism. We use this correlation to identify additional hot spots in regions not observed by IRIS and to model their temperatures. Our model temperature for the S-polar feature is 280+ or -50 K. Taking account of the high latitudes of these features, the estimated global average heat flow from the hot spots becomes 1.8+ or -0.5 W m-2.-from Authors

Original languageEnglish (US)
JournalJournal of Geophysical Research: Space Physics
Volume90
Issue numberB14
StatePublished - 1985
Externally publishedYes

Fingerprint

Io
calderas
albedo
caldera
hot spot
volcanology
Infrared radiation
heat transmission
polar regions
reflectance
heat flow
reflectivity
temperature
volcanism
wavelengths
Heat transfer
wavelength
Imaging techniques
Wavelength
Temperature

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Volcanic hot spots on Io : correlation with low- albedo calderas. / McEwen, Alfred S.; Matson, D. L.; Johnson, T. V.; Soderblom, L. A.

In: Journal of Geophysical Research: Space Physics, Vol. 90, No. B14, 1985.

Research output: Contribution to journalArticle

McEwen, Alfred S. ; Matson, D. L. ; Johnson, T. V. ; Soderblom, L. A. / Volcanic hot spots on Io : correlation with low- albedo calderas. In: Journal of Geophysical Research: Space Physics. 1985 ; Vol. 90, No. B14.
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