基于三层变尺度等效源的离散重力数据重构

李端; 陈超; 梁青; 黎海龙; 胡正旺

doi:10.3799/dqkx.2017.513

Volume 43 Issue 3

Mar. 2018

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Article Navigation > Earth Science > 2018 > 43(3): 873-886

Li Duan, Chen Chao, Liang Qing, Li Hailong, Hu Zhengwang, 2018. Reconstruction of Discrete Gravity Data Using Three-Tier Equivalent Sources with Variable Sizes. Earth Science, 43(3): 873-886. doi: 10.3799/dqkx.2017.513

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Li Duan, Chen Chao, Liang Qing, Li Hailong, Hu Zhengwang, 2018. Reconstruction of Discrete Gravity Data Using Three-Tier Equivalent Sources with Variable Sizes. Earth Science, 43(3): 873-886. doi: 10.3799/dqkx.2017.513

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Reconstruction of Discrete Gravity Data Using Three-Tier Equivalent Sources with Variable Sizes

doi: 10.3799/dqkx.2017.513

Li Duan^1
,,
Chen Chao^{1
,
,},
Liang Qing¹,
Li Hailong^1,2,
Hu Zhengwang¹

1.
Hubei Subsurface Multi-Scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China
2.
Guangxi Geophysical Investigation Institute, Liuzhou 545005, China

Received Date: 2017-10-22
Publish Date: 2018-03-15

Abstract

Abstract

Reconstruction of discrete gravity data is an important technique in data analysis and processing. As an effective and stable approach of reconstruction, Equivalent-source method has still been the interest of geoscientists. In this paper, the frame of multi-size equivalent-sources distributing in three layers is proposed based on the theory of potential field. This approach can effectively recover long-wavelength information in observed data and is able to realize the high-precision reconstruction, so that gravity gradients can be calculated accurately on the basis of the achieved equivalent-sources. Issues on settings of three-layer equivalent sources with variable sizes and the optimization of inversion algorithm are discussed in the work. The experiments of 2D and 3D models show the effectiveness and the advantage of the method relative to the reconstructed results using single-layer equivalent-source method. The real data example from a region of Guangxi, China, is applied and its result illustrates that the method has good noise suppression and practicability.
- gravity,
- gravity gradient,
- reconstruction,
- three-tier equivalent sources,
- variable size

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References(59)

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Reconstruction of Discrete Gravity Data Using Three-Tier Equivalent Sources with Variable Sizes

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