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

We invert Rayleigh wave 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 fin...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: M. Hobiger, M. Hallo, C. Schmelzbach, S. C. Stähler, D. Fäh, D. Giardini, M. Golombek, J. Clinton, N. Dahmen, G. Zenhäusern, B. Knapmeyer-Endrun, S. Carrasco, C. Charalambous, K. Hurst, S. Kedar, W. B. Banerdt
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
Materias:
Q
Acceso en línea:https://doaj.org/article/981e593d21b04915984d2f1606bda1f5
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
Descripción
Sumario:We invert Rayleigh wave 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 a sedimentary layer sandwiched between layers of basalt flows.