The shallow structure of Mars at the InSight landing site from inversion of ambient vibrations

The shallow structure of Mars at the InSight landing site from inversion of ambient vibrations

Blog Article

We invert Rayleigh wave whelen arges spotlight ellipticity curves extracted from ambient seismic vibrations at the InSight landing site to resolve, for the first time on Mars, the shallow subsurface to around 200 m depth.While our seismic velocity model is largely consistent with the expected stacks of lava flows, we find a seismic low velocity zone at about 30 to 75 m depth that we interpret as read more a sedimentary layer sandwiched between layers of basalt flows.