Fig. 8: Temperature and ice phases as a function of depth within a 1-km thick ice sheet on Proxima Centauri B, assuming exponentially declining heat flow.
From: Liquid water on cold exo-Earths via basal melting of ice sheets
a Temperature distribution as a function of depth and time on Proxima Centauri B for a 1 km thick ice sheet assuming Ts of 257 K and variable heat flow over a billion years. b Ice phase evolution as a function of depth and time on Proxima Centauri B over a billion years. c An ad hoc exponential function that models heat loss on Proxima Centauri B from 60 to 30 mW m−2 over a billion years. d Temperature distribution as a function of depth and time on Proxima Centauri B for a 1 km thick ice sheet assuming Ts of 257 K and variable heat flow over 4 billion years. e Ice phase evolution as a function of depth and time on Proxima Centauri B over 4 billion years. f An ad-hoc exponential function that simulates heat loss on Proxima Centauri B from 60 to 30 mW m−2 over 4 billion years.
