The Roles of Heat and Gas in a Mushy Magma Chamber

Crustal magmatic systems likely consist of reservoirs dominated by crystal mush. Recent studies suggest that the physical processes occurring in mush could alter response during volcanic unrest. Here, we present a magma chamber deformation model incorporates two new aspects mush: heat and exsolved gas. The is based on earlier Liao et al. (2021) with additional including thermal-mechanical coupling, dependence material properties gas content, temperature evolution following an injection hotter magma. post-injection time-dependent system can be grouped into three periods, which are poroelastic diffusion (short term), viscoelastic relaxation (mid thermal equilibration (long term). All time-regimes strongly affected distribution, alters relative compressibility crystal-rich crystal-poor regions chamber. contribution emerges mid-term evolution. highlights intrinsic ability gas-bearing mushy to generate non-monotonic time series stresses, deformation, transport.