基于窗口数据的重力相关成像  

Gravity correlation imaging based on window data

作　　者：赵国兴[1] 吴燕冈[1] 王凤刚[2] 李朝辉[1] 邢琮琮 ZHAO Guo-xing;LI Zhao-hui;XING Cong-cong;WU Yan-gang;WANG Feng-gang(College o f Geo-exploration Science and Technology, Jilin University, Changchun 130026,China;Institute of Geology, Shougang Geological Exploration Institute, Beijing 100144,China)

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026 [2]首钢地质勘查院地质研究所,北京100144

出　　处：《世界地质》2016年第3期858-864,共7页World Geology

基　　金：基金项目:"上富儿沟-王家沟"断裂重;磁;电剖面调查与综合解释(PB2015019)

摘　　要：位场相关成像可以快速估计场源的空间位置。为了减小叠加异常对相关成像的影响,现有的成像方法通常是采用剩余异常或异常垂向导数成像。笔者通过加入一个数据截取窗口,计算窗口内数据的相关系数,以减少相邻场源间的影响,从而达到提高成像分辨率的目的;并通过相关系数极值的大小选取窗口,从理论上使成像结果更加可靠。通过重力模型试验,验证本方法能够提高成像分辨率。将该法应用于葫芦岛市黑鱼沟的某矿洞的深度计算中,取得较好效果。Potential correlation imaging method can obtain the location of the source rapidly. To reduce the impact of superposed anomaly on correlation imaging, the existing methods usually use residual anomaly or vertical derivative imaging. The authors add a data intercept window to truncate the data, and calculate the correlation coefficient based on window data to reduce the impact of adjacent field source and improve the resolution of imaging.The windows were selected by the values of correlation coefficient extremum to get more reliable imaging results.With the test of gravity models, it was proved that the method can improve the resolution of imaging. The method was applied to calculate the depth of a mine tunnel in Heiyugou of Huludao City, and the result was satisfactory.

关 键 词：重力 相关成像 窗口 叠加异常 

分 类 号：P613.14[天文地球—矿床学]