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An inversion of geoid and topography for mantle and crustal structure on mars
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Frey, Herb Roark, Jim Kiefer, Walter Bills, Bruce Nerem, Steve Zuber, Maria |
| Copyright Year | 1993 |
| Description | Mars has the largest amplitude geoid anomalies and surface topography known on the terrestrial planets. A number of prior studies have analyzed Martian gravity anomalies and topography in terms of isostasy and flexure of the crust and lithosphere. Other studies have emphasized the role of mantle convection in producing gravity anomalies and topography in some regions of Mars. Geoid and topography observations for simultaneous estimates of density anomalies in the crust and mantle of Mars are inverted. In performing this study, a recent degree 50 spherical harmonic expansion of the Martian gravity field (GMM-l) and a corresponding resolution expansion of the USGS Mars topography model are used. However, our analysis is restricted to harmonic degrees up to L equals 25, which are better determined than the higher harmonics. This provides a half-wavelength horizontal resolution of 425 km. |
| File Size | 161069 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940011842 |
| Archival Resource Key | ark:/13960/t9g49mk0g |
| Language | English |
| Publisher Date | 1993-01-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Mars Planet Inversions Gravitational Fields Geoids Flexing Gravity Anomalies Geological Surveys Planetary Geology Isostasy Topography Mars Surface Planetary Mantles Planetary Crusts Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
