Determination of vertical gradient of gravity anomaly with topographic data
The role of vertical gradient of gravlty anomaly in the solution and interpretation of geological and geophysical problems on superficial layer is increasingly evident. However, it is difficult to directly observe the vertical gradient of gravity anomaly in mountainous area. Moreover, aerial and sat...
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Published in | Chinese science bulletin Vol. 44; no. 11; pp. 1029 - 1034 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Beijing
Springer Nature B.V
01.06.1999
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Subjects | |
Online Access | Get full text |
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Summary: | The role of vertical gradient of gravlty anomaly in the solution and interpretation of geological and geophysical problems on superficial layer is increasingly evident. However, it is difficult to directly observe the vertical gradient of gravity anomaly in mountainous area. Moreover, aerial and satellite gravity gradient measurments have not been put into practice up to date yet. The vertical gradient of gravity anomaly is calculated by use of topographic data and several problems concerned are investigated and discussed. It turns out in theory and practice that the relative error of the vertical gradient determined with the method is only 5%. and when the vertical gradient of gravrty anomaly reaches the maximum 1 000 ns−2, the error is only 50 ns−2. In addition, how to divide ring zones in calculation and the errors caused by the inaccuracy of landform elevation and rock density has been quantitatively analysed. |
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ISSN: | 1001-6538 2095-9273 1861-9541 2095-9281 |
DOI: | 10.1007/BF02886024 |