Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis
The crust and upper mantle structure of Mars is determined in the depth range of 0 to 100 km, by means of dispersion analysis and its inversion, which is performed for the surface waves present in the traces of the seismic event: S1094b. From these traces, Love and Rayleigh waves are measured in the...
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2025-04-01
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| author | Víctor Corchete |
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| description | The crust and upper mantle structure of Mars is determined in the depth range of 0 to 100 km, by means of dispersion analysis and its inversion, which is performed for the surface waves present in the traces of the seismic event: S1094b. From these traces, Love and Rayleigh waves are measured in the period range of 4 to 40 s. This dispersion was calculated with a combination of digital filtering techniques, and later was inverted to obtain both models: isotropic (from 0 to 100 km depth) and anisotropic (from 0 to 15 km depth), which were calculated considering the hypothesis of the surface wave propagation in slightly anisotropic media. The seismic anisotropy determined from 0 to 5 km depth (7% of S-velocity variation and ξ ~ 1.1) could be associated with the presence of sediments or lava-flow layering, and wide damage zones surrounding the long-term fault networks. For greater depths, the observed anisotropy (17% of S-velocity variation and ξ ~ 1.4) could be due to the possible presence of volcanic materials and/or the layering of lava flows. Another cause for this anisotropy could be the presence of layered intrusions due to a single or multiple impacts, which could cause internal layering within the crust. Finally, the Moho depth is determined at 50 km as a gradual transition from crust to mantle S-velocities, through an intermediate value (3.90 km/s) determined from 50 to 60 km-depth. |
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| spelling | doaj-art-d7b5f00a184e462e8e5c470dc03cec282025-08-20T02:24:47ZengMDPI AGApplied Sciences2076-34172025-04-01159473210.3390/app15094732Crust and Upper Mantle Structure of Mars Determined from Surface Wave AnalysisVíctor Corchete0Higher Polytechnic School, University of Almeria, 04120 Almeria, SpainThe crust and upper mantle structure of Mars is determined in the depth range of 0 to 100 km, by means of dispersion analysis and its inversion, which is performed for the surface waves present in the traces of the seismic event: S1094b. From these traces, Love and Rayleigh waves are measured in the period range of 4 to 40 s. This dispersion was calculated with a combination of digital filtering techniques, and later was inverted to obtain both models: isotropic (from 0 to 100 km depth) and anisotropic (from 0 to 15 km depth), which were calculated considering the hypothesis of the surface wave propagation in slightly anisotropic media. The seismic anisotropy determined from 0 to 5 km depth (7% of S-velocity variation and ξ ~ 1.1) could be associated with the presence of sediments or lava-flow layering, and wide damage zones surrounding the long-term fault networks. For greater depths, the observed anisotropy (17% of S-velocity variation and ξ ~ 1.4) could be due to the possible presence of volcanic materials and/or the layering of lava flows. Another cause for this anisotropy could be the presence of layered intrusions due to a single or multiple impacts, which could cause internal layering within the crust. Finally, the Moho depth is determined at 50 km as a gradual transition from crust to mantle S-velocities, through an intermediate value (3.90 km/s) determined from 50 to 60 km-depth.https://www.mdpi.com/2076-3417/15/9/4732Love and Rayleigh wavescrust and upper mantleanisotropyMarsInSight |
| spellingShingle | Víctor Corchete Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis Applied Sciences Love and Rayleigh waves crust and upper mantle anisotropy Mars InSight |
| title | Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis |
| title_full | Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis |
| title_fullStr | Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis |
| title_full_unstemmed | Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis |
| title_short | Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis |
| title_sort | crust and upper mantle structure of mars determined from surface wave analysis |
| topic | Love and Rayleigh waves crust and upper mantle anisotropy Mars InSight |
| url | https://www.mdpi.com/2076-3417/15/9/4732 |
| work_keys_str_mv | AT victorcorchete crustanduppermantlestructureofmarsdeterminedfromsurfacewaveanalysis |