Abstract:Liquid water is a critical component of habitability. However, the production and stability of surficial liquid water can be challenging on planets devoid of adequate greenhouse warming. On such cold, icy exo-Earths, basal melting of regional/global ice sheets by geothermal heat provides an alternative means of forming liquid water. Here, we model the thermophysical evolution of ice sheets to ascertain the geophysical conditions that allow liquid water to be produced and maintained at temperatures above freezi… Show more
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