Reconstruction of Discrete Gravity Data Using Three-Tier Equivalent Sources with Variable Sizes
Li Duan
Chen Chao
Liang Qing
Li Hailong
Hu Zhengwang
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-lay-er 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.
Keywords：gravitygravity gradientreconstructionthree-tier equivalent sourcesvariable size
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：14( 873-886 )