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Thermal infrared analysis of volcanic surfaces: Mars and HawaiiHigh spatial resolution data from the Viking infrared thermal mapper (IRTM) are used to examine the Tharsis volcanoes which are situated within a vast area of low thermal inertia material very fine particle size or very high porosity, with the volcanoes having the lowest thermal inertias. Thermal infrared images of the 1823 flow on Kilauea's southwest rift zone show lower thermal inertias near the vent area where shelly pahoehoe is common while individual channelized aa flows with abundant broken pahoehoe slabs are higher thermal inertia. The increase in aa flows to the southeast leads to a general trend of increasing thermal inertias from near vent to distal areas. Martian shield volcanoes have thermal inertias equal to or higher than their surrounding plans when atmospheric effects are removed from the data. The general increase in thermal inertias away from the summit calderas is consistent with the trend of the Hawaiian 1823 flow and may be related to changing lava properties away from the summit.
Document ID
19840015456
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zimbelman, J. R.
(Arizona State Univ. Tempe, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: NASA. Washington Rept. of Planetary Geology Program, 1983
Subject Category
Lunar And Planetary Exploration
Accession Number
84N23524
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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