Reconsideration of the anelasticity parameters of the martian mantle: Preliminary estimates based on the latest geodetic parameters and seismic models

Abstract

This study re-estimates the anelasticity parameters of the martian mantle on the basis of both of the recent tidal and rotational parameters and also the latest internal structure models obtained from the in-situ seismic experiment. This study considers the geodetically-derived tidal Love number, global quality factor, and Chandler wobble period, together with the seismologically-derived interior models based on the geophysical and geodynamical inversions. On the assumption of simple power-law rheology, a grid search restricts the ranges of the anelasticity parameters, namely, the frequency exponent (α=0.22±0.13) and local quality factor normalization (Q0=76±9). The combination of the tidal and rotational parameters with the seismic models constrains the frequency exponent effectively.