Predicting Bathymetry from the Earth's Gravity Gradient Anomalies
作者:
Yan Ming Wang,
期刊:
Marine Geodesy
(Taylor Available online 2000)
卷期:
Volume 23,
issue 4
页码: 251-258
ISSN:0149-0419
年代: 2000
DOI:10.1080/01490410050210508
出版商: Informa UK Ltd
关键词: Gravity Gradient Bathymetry And Response Function
数据来源: Taylor
摘要:
Historically, prediction of ocean floor depth, or bathymetry, has been based on the isostatic modeling and linearized relationships between gravity anomalies and bathymetry. The need for isostatic modeling limits the application of the resulting bathymetry predictions as constraints in geophysical models. An alternative technique making use of the Earth's vertical gravity gradient for predicting bathymetry is explored in this paper. This technique is based on the fact that the observed gravity gradient anomalies result primarily from local mass concentrations on the ocean floor, and that mass compensation by the oceanic crust has an insignificant effect on the gravity gradients, and can be neglected. The resulting bathymetry prediction therefore is independent of isostatic modeling assumptions, allowing it to be used as a constraint on models of lithospheric compensation and for other geodetic and geophysical applications.
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