Abstract
To explain thermal and magmatic history on Mars, we performed numerical simulations of the coupled magmatism-mantle convection system. First we performed a series of numerical simulations of thermal convection with temperature-dependent viscosity and clarified the magnitude of temperature dependency of viscosity necessary to make the lithosphere stagnant lid as is the case for Mars during the last several billion years. Then we performed a series of numerical simulations of magmatism in a convecting mantle. We are currently calculating two cases; one with a stagnant lithosphere and another with a slowly moving lithosphere. We will report and discuss on its result.
