TECHNIQUES FOR INTERPRETATION OF GEOID ANOMALIES

被引:81
作者
CHAPMAN, ME [1 ]
机构
[1] COLUMBIA UNIV,DEPT GEOL SCI,PALISADES,NY 10964
来源
JOURNAL OF GEOPHYSICAL RESEARCH | 1979年 / 84卷 / NB8期
关键词
D O I
10.1029/JB084iB08p03793
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
For purposes of geological interpretation, techniques are developed to compute directly the geoid anomaly over models of density within the earth. Ideal bodies such as line segments, vertical sheets, and rectangles are first used to calculate the geoid anomaly. Realistic bodies are modeled with formulas for 2-dimensional polygons and 3-dimensional polyhedra. By using Fourier transform methods the 2-dimensional geoid is seen to be a filtered version of the gravity field, in which the long-wavelength components are magnified and the short wavelength components diminished.-Author
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页码:3793 / 3801
页数:9
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