摘要
匹配滤波、小波多尺度分析和反演分离3种方法均能实现重力场的垂向分离,通过模型试验和实际数据对比分析了3种方法的分离效果。试验结果表明:当浅源场与中、深源场的波数成分重叠较少,异常特征较为明显时,3种方法均能较为准确地分离出浅源场,其中反演分离法效果最好;而中、深源场的波数成分重叠较多,异常较为相近时,3种方法均能实现重力场分离,其中反演分离方法的结果相对更准确,适合为进一步反演解释提供局部场或区域场重力数据。小波多尺度分析和反演分离方法的精度较高,但存在计算耗时长的问题,且分离效果受参数影响。在实际数据处理中,应当收集多种先验信息,综合使用多种方法对重力场进行分离,互相验证,才能取得最佳结果。
Three methods of matched filtering,wavelet multi-scale analysis and inversion separation can all realize the ver-tical separation of the gravity field.This paper compares and analyzes the separation effect of the three methods through model experiments and actual data.The test results show that when the wave number components of the shallow source field and the medium and deep source fields are less overlapped and the abnormal characteristics are more obvious,the three methods can more accurately separate the shallow source fields,and the inversion separation method has the best effect.When the wavenumber components of the medium and deep source fields overlap more and the anomalies are relatively simi-lar,the three methods can all achieve the separation of the gravitational field.Among them,the results of the inversion separation method are relatively more accurate,which is suitable for providing local or regional field gravity data for further inversion and interpretation.Wavelet multi-scale analysis and inversion separation methods have high accuracy,but also have the problem of time-consuming calculation,and the separation effect is affected by parameters.In actual data process-ing,a variety of prior information should be collected,and multiple methods should be used to separate the gravitational field and verify each other in order to obtain the best results.
作者
索奎
彭少飞
刘爱涛
赵贵章
SUO Kui;PENG Shaofei;LIU Aitao;ZHAO Guizhang(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Beijing Huayu Engineering Co.Ltd.,Beijing 100120,China;Hebei institute of Geological Survey,Shijiazhuang 050081,China)
出处
《华北水利水电大学学报（自然科学版）》
北大核心
2021年第6期73-80,共8页
Journal of North China University of Water Resources and Electric Power：Natural Science Edition
基金
国家自然科学基金项目(41372260,41972261)
华北水利水电大学高层次人才启动项目(201705007)。
关键词
重力场分离
匹配滤波
小波多尺度分析
反演分离
gravity field separation
matched filtering
wavelet multi-scale analysis
inversion and separation
作者简介
索奎(1987-),男,讲师,博士,从事重磁电数据处理及反演方面的研究。E-mail:suokui@ncwu.edu.cn;通信作者:赵贵章(1975-),男,副教授,博士,从事包气带水分运移机理和水文地球探测方面的研究。E-mail:guizhangzhao@163.com。
