Study on Multi-Scale Density Inversion of Gravity Anomalies
详细信息
- 责任者：Hou Zunze (Chinese People’s Armed Police Force Academy ; Langfang 065000 ; China) ; Yang Wencai
- 刊名：Computing Techniques for Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：35(2)
- 关键词：重力异常 ; gravity anomaly
- 页码：p.123-127
- 图表：illus., 17 refs.
- 分类号：1600
- issnNo：ISSN1001-1749
- isbnNo：CN51-1242/P
摘要
The gravity anomalies observed on the ground come from the superposition of potential field of source bodies with different depth and different scale.And if the potential field is not properly decomposed,it is difficult to quantify the physical properties and geometric parameters of the source bodies through inversion computations.The paper introduced the method of wavelet multi-decomposed gravity anomalies first.After completing the multi-scale decomposition of gravity anomalies by discrete wavelet transformation,using the wavelet details anomalies to calculate the average power spectrum of them produce the central depths of the layers.After obtaining the density distribution by generalized linear density inversion,we should suppose the average density of each stratum.Finally,we can inverse the relative density perturbation for each equivalent stratum.Results indicate that the method is valuable to exploration by wavelet transform analysis scheme and a density inversion in tarim basin.