HR: 1340h
AN: G33C-0053    [Abstracts]
TI: Evaluating spherical Earth gravity tensor gradients by Gauss-Legendre quadrature integration
AU: * Asgharzadeh, M F
EM: asgharzadeh.1@osu.edu
AF: The Ohio State University, Department of Geological Sciences 275 Mendenhall Laboratory 125 South Oval Mall, Columbus, OH 43210-1308 United States
AU: von Frese, R R
EM: vonfrese@osu.edu
AF: The Ohio State University, Department of Geological Sciences 275 Mendenhall Laboratory 125 South Oval Mall, Columbus, OH 43210-1308 United States
AU: Leftwich, T E
EM: leftwich@geology.ohio-state.edu
AF: The Ohio State University, Department of Geological Sciences 275 Mendenhall Laboratory 125 South Oval Mall, Columbus, OH 43210-1308 United States
AU: Kim, H
EM: kimhr@core2.gsfc.nasa.gov
AF: NASA, Code 921, Geodynamics Branch, Goddard Space Flight Center, Greenbelt, MD 20771 United States
AB: Satellite-measured regional gravity and terrain elevation data are becoming increasingly available for improving our understanding of the geologic properties and history of the Earth, Moon, Mars, Venus and other planets. In assessing the geological significance of the existing and growing volumes of these regional data sets, there is great need for computing theoretical anomalous gravity fields from geologic models in spherical coordinates. In the present study, we explicitly develop the elegant Gauss-Legendre quadrature formulation for numerically modeling the complete gravity effects (i.e., potential, vector and tensor gradient field) of the spherical prism. As an application, we investigate the gradient components of the isostatic gravity anomalies that ESA's upcoming Gravity Field and Steady State Ocean Circulation Explorer (GOCE) satellite mission is likely to map over a large tectonically active region of the Middle East centered on Iran.
DE: 0545 Modeling (4255)
DE: 0903 Computational methods: potential fields (1214)
DE: 0920 Gravity methods (1219)
DE: 1219 Gravity anomalies and Earth structure (0920, 7205, 7240)
DE: 3225 Numerical approximations and analysis (4260)
SC: Geodesy [G]
MN: Fall Meeting 2005