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Effusion rate, length, and area relationships for some lava flows on Hawaii and Mount Etna with planetary implicationsA model for the radiative cooling of thermally well mixed lava flows is presented and the relationship between effusion rate and length and area is analyzed. If radiative cooling is the prime mode of heat loss for a lava flow, one should expect to see a stronger correlation between the effusion rate and the plan area of the flow, than between effusion rate and just flow length. Different flows on a single volcano with differing initial temperatures, volatile content, and gross compositions should yield different areas for a given effusion rate. Likewise, a range of slopes for the relationship between effusion rate and flow area should result from comparisons between different volcanoes. As a test of these ideas, available data on the effusion rates, lengths, and areas of Hawaiian and Etnean flow is studied. It was found that: (1) the effusion rate/area correlation was statistically more significant than the correlation between effusion rate and length for four out of the five eruption episodes which met the necessary criteria of more than three individual flows with area, length, and effusion rate independently measured; (2) that there exists a minimum length and area for a given effusion rate, reflecting competition between overall characteristic proportionality between effusion rate and flow length, width, and area.
Document ID
19840015414
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Pieri, D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Baloga, S.
(DOE Washington, D.C., United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: NASA. Washington Rept. of Planetary Geol. Program, 1983
Subject Category
Geophysics
Accession Number
84N23482
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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