基于小波多尺度分析的重力异常分离  

SEPARATION OF GRAVITY FIELDS USING A 2-D MULTI-RESOLUTION WAVELET ANALYSIS

作　　者：王海青[1] 

机构地区：[1]安徽省勘查技术院,蚌埠233000

出　　处：《物探化探计算技术》2013年第4期424-429,371,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家地质调查局项目(1212011120925);国家地质科学院项目(1212011220243)

摘　　要：在利用小波多尺度分解重磁场中,实际上并非所有的小波都适合于位场分离。这里采用对称性、紧支撑性较好的Daubechies小波对重力场多尺度分解,依照重力背景场的地质意义提取重力异常背景场,并在此基础上计算重力异常异常场。最后通过模型试算和实例分析进一步表明了该方法的有效性和实用性。In fact,not all of the wavelets are suitable for separation of Gravity and magnetic field by using multi-resolution wavelet analysis.In this paper,we choose the symmetry,compactly supported Daubechies wavelet for multi-resolution Wavelet analysis of the gravity field,and extract regional gravity field based on geological significance,and calculate residual gravity field.The proposed method is verified by one numerical example and results show that the approach is effectiveness.

关 键 词：小波多尺度分析 异常场 背景场 异常分离 

分 类 号：P631.1[天文地球—地质矿产勘探]