The role of porosity in thermal inertia variations on basaltic lavas

Details The role of porosity in thermal inertia variations on basaltic lavas The role of porosity in thermal inertia variations on basaltic lavas

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...68..366z&link_type=abstract

Icarus (ISSN 0019-1035), vol. 68, Nov. 1986, p. 366-369.

Physics

8

Basalt, Lava, Mars Volcanoes, Porosity, Inertia, Specific Heat, Thermal Conductivity, Mars, Porosity, Thermal Properties, Inertia, Basalt, Shield Volcanoes, Lava Flows, Eolian Processes, Origin, Formation, Comparisons, Density, Conductivity, Vesicles, Glasses, Olivine, Samples, Terrestrial, Weathering, Laboratory Studies, Physical Properties, Hypotheses

Scientific paper

Thermal inertia, defined as the square root of the product of thermal conductivity, density, and specific heat, has been noted to vary in inverse proportion to porosity in Hawaiian basalts. It is presently suggested that porosities of the order of more than 80 percent are required if the low thermal inertias observed in Martian shield volcanoes are the result of pristine lava flow surface properties. An aeolian origin is held to be most likely in view of thermal measurements on Mars; the volcanic surfaces in question are anticipated to have a short lifetime in their environment.

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