Spherical prism magnetic effects by Gauss-Legendre quadrature integration

被引:22
作者
Asgharzadeh, M. F. [1 ]
von Frese, R. R. B. [1 ]
Kim, H. R. [2 ]
机构
[1] Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA
[2] Univ Maryland Baltimore Cty, Goddard Earth Sci & Technol Ctr, GSFC NASA, Greenbelt, MD 20771 USA
关键词
magnetic anomalies : modelling and interpretation; satellite magnetics; planetary tectonics;
D O I
10.1111/j.1365-246X.2007.03692.x
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Regional spherical coordinate observations of the Earth's crustal magnetic field components are becoming increasingly available from shipborne, airborne, and satellite surveys. In assessing the geological significance of these data, theoretical anomalous magnetic fields from geologic models in spherical coordinates need to be evaluated. This study explicitly develops the elegant Gauss-Legendre quadrature formulation for numerically modelling the complete magnetic effects (i.e. potential, vector and tensor gradient fields) of the spherical prism. We also use these results to demonstrate the magnetic effects for the crustal prism and to investigate the crustal magnetic effects at satellite altitudes for a large region of the Middle East centred on Iran.
引用
收藏
页码:315 / 333
页数:19
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