反演磁性地层界面的逐步剥离磁场法  

The method of separation of magnetic field step by step for inversion of magnetic stratigraphic interfaces

作　　者：赵百民[1] 郝天珧[1] 徐亚[1] 周立宏[2] 高嘉瑞[2] 袁淑琴[2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国石油大港油田公司,天津300280

出　　处：《地球物理学报》2007年第2期611-618,共8页Chinese Journal of Geophysics

基　　金：中国科学院知识创新重大项目(KZCX1-SW-18-01);国家自然科学基金项目(40574038);大港油田基础外协项目(2005-JSFW-0000-00341)资助

摘　　要：在对前人研究方法总结对比的基础上,本文提出了一种逐步剥离位场反演磁性地层界面的方法,该方法假定位场是由一个等效单位厚度层的等效磁化强度变化引起,通过逐步剥离位场,得到等效单位厚度层的等效磁化强度,进而求取磁性地层的起伏.本文进行了理论模型计算和野外实例处理,取得了良好效果.We propose a method of separation of magnetic field step by step to retrieve magnetic stratigraphic interfaces. This method supposes that the field is generated by variation of equivalent magnetization in a unitthickness layer. Then it obtains the equivalent magnetization of the unit-thickness layer by separating the potential field, and determines the relief of magnetic stratigraphic interfaces. In this work we have designed a model to test the method, and applied it to a case of field data processing. The result shows the method is valid.

关 键 词：界面反演 等效单位厚度层 等效磁化强度 剥离 

分 类 号：P631[天文地球—地质矿产勘探]