Muriel helps Cécile in developing numerical tools aroundthe numerical thermo-mechanical code ADELI to better assess the potentialcontribution of the tectono-volcanic stress field on influencing thehydro-thermal-mechanical properties of the host bedrock,  at thekilometric scale, such as opening/closure of permeability, and whichcontrol the ability of the hot fluids to circulate and rise towards the surface(like the opening and the interconnection of cracks or holes in a spongethrough which the fluids flow).