Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm...p32a12p&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #P32A-12
Other
5420 Impact Phenomena (Includes Cratering), 5430 Interiors (8147), 5475 Tectonics (8149)
Scientific paper
The interior mass differentiation of Mars was investigated by studying the correlation spectrum between the free-air gravity anomalies and terrain gravity effects at 100 km altitude. The gravity effects of the Martian topography, accurately modeled in spherical coordinates by Gauss-Legendre quadrature integration, were spectrally correlated against the free-air anomaly estimates from the Mars Global Surveyor model GMM-2B to infer the free-air terrain-correlated and the terrain-decorrelated components. The terrain-correlated free-air gravity anomalies were then subtracted from the terrain gravity effects to estimate the compensated terrain effects that were analyzed for mantle topography and crustal thickness variations assuming the topography was compensated by crustal thickness variations. The remaining terrain-decorrelated free-air anomalies were separated into possible intracrustal, mantle, and core components based on their correlation spectrum with the GMM-2B gravity model. Specifically, the terrain-decorrelated anomaly components that are correlative with GMM-2B components up through spherical harmonic degree 4 were taken to reflect mostly density variations of the core. These anomaly estimates may provide important new insight on the poorly understood properties of the Martian core. Similarly, the terrain-decorrelated free-air anomalies from degree 5 through 12, 13 through 17, and 18 through 30, respectively, were taken to broadly characterize lower, middle and upper mantle density variations. These estimates seem to indicate prominent density contrasts that may reflect mass flow within the mantle involved with the development of major basins, volcanoes, and other poorly understood tectonic features of Mars. The residual terrain-decorrelated free-air anomaly correlated with GMM-2B components above degree 30 were taken to largely reflect the effects of intracrustal density contrasts that impose near-surface constraints on the poorly understood Martian crust.
Potts Laramie V.
von Frese Ralph R.
No associations
LandOfFree
Martian Mass Differentiation From Spectrally Correlated Free-air and Topographic Gravity Data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Martian Mass Differentiation From Spectrally Correlated Free-air and Topographic Gravity Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Martian Mass Differentiation From Spectrally Correlated Free-air and Topographic Gravity Data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1272151