Thermal Models for Basaltic Volcanism on Io

L. Keszthelyi and A. McEwen

Abstract: We present a new model for the thermal emissions for
basaltic lavas 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 rather than fountain-fed, channelized,
`a`a flows.  This model demonstrates the large effect lava porosity
has on the surface cooling rate and provides a preliminary tool for
examining some of the hot spots on Io.  We suggest that the data to
date are consistent with moderately active to quiescent basaltic lava
lakes but are not diagnostic of such activity.