插值切割法在南海重力数据处理中的应用
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摘要
重力数据处理是进行重力反演和解译的必要环节,其中将区域场和局部场分离对于重力勘探有着重要的作用。相比于其他算法,插值切割法是一个优良的算法,算法中切割半径是一个重要的参数。通过计算比较局部异常和区域异常与原始数据及地形数据的相关性,认为可以通过相关性确定最佳切割半径,应用于南海的重力异常数据分离,并取得良好的分离效果。
Gravity data processing is the foundation of gravity inversion and data interpretation.In gravity exploration,it is critical important to separate the local anomalies from the regional field.Compared to other algorithms,the interpolation cut method is an excellent one and the cutting radius is an important parameter to the method.In this paper,we computed the correlation through comparison of the local and regional anomalies as well as the comparison of the original gravity data and the terrain data.The best cutting radius is determined by the correlation.Our practice suggests that the interpolation cut method works well in separating the local fields from the regional in the South China Sea.
Gravity data processing is the foundation of gravity inversion and data interpretation.In gravity exploration,it is critical important to separate the local anomalies from the regional field.Compared to other algorithms,the interpolation cut method is an excellent one and the cutting radius is an important parameter to the method.In this paper,we computed the correlation through comparison of the local and regional anomalies as well as the comparison of the original gravity data and the terrain data.The best cutting radius is determined by the correlation.Our practice suggests that the interpolation cut method works well in separating the local fields from the regional in the South China Sea.
引文
[1]刘彦,严加永,吴明安,等.基于重力异常分离方法寻找深部隐伏铁矿——以安徽泥河铁矿为例[J].地球物理学报,2012,55(12):4181-4193.[LIU Yan,YAN Jiayong,WU Ming’an,et al.Exploring deep concealed ore bodies based on gravity anomaly separation methods:A case study of the Nihe iron deposit[J].Chinese Journal of Geophysics,2012,55(12):4181-4193.]
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[8] Fedi M,Quarta T.Wavelet analysis for the regional-residual and local separation of potential field anomalies[J].Geophysical Prospecting,1998,46(5):507-525.
[9]李宗杰,杨林,王勤聪.小波变换在位场数据处理中的应用[J].石油物探,1997,36(2):86-93.[LI Zhongjie,YANG Lin,WANG Qincong.Application of the wavelet transform in potential field data processing[J].Geophysical Prospecting for Petroleum,1997,36(2):86-93.]
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[14]段本春,徐世浙.磁(重力)异常局部场与区域场分离处理中的扩边方法研究[J].物探化探计算技术,1997,19(4):298-304.[DUAN Benchun,XU Shizhe.A study of the scheme of extending edge in the processing of separating local field from regional field for magnetic/gravity anomaly[J].Computing Techniques for Geophysical and Geochemical Exploration,1997,19(4):298-304.]
[15]汪炳柱,徐世浙,刘保华,等.多次插值切割法分场的一个实例[J].石油地质物理勘探,1997,32(3):431-438.[WANG Bingzhu,XU Shizhe,LIU Baohua,et al.An example of aeromagnetic anomaly separation using multi-interpolation division[J].Oil Geophysical Prospecting,1997,32(3):431-438.]
[16]段本春,徐世浙,阎汉杰,等.划分磁异常场的插值切割法在研究火成岩体分布中的应用[J].石油地质物理勘探,1998,33(1):125-131.[DUAN Benchun,XU Shizhe,YAN Hanjie,et al.Application of interpolation-cut method for magnetic anomaly division to igneous mass investigation[J].Oil Geophysical Prospecting,1998,33(1):125-131.]
[17]张虹.重磁资料异常分离与构造边界识别方法的应用分析[J].中小企业管理与科技,2016(2):241.[ZHANG Hong.Application analysis of anomaly separation of gravity and magnetic data and identification of tectonic boundaries[J].Management&Technology of SME,2016(2):241.]
[18]陈洁,朱本铎,温宁,等.南海海岛海山的重磁响应特征[J].地球物理学报,2012,55(9):3152-3162.[CHEN Jie,ZHU Benduo,WEN Ning,et al.Gravity-magnetic response of the islands and seamounts of South China Sea[J].Chinese Journal of Geophysics,2012,55(9):3152-3162.]
[19]陈洁,温宁,万荣胜,等.重要的海洋测绘成果——南海重磁异常图[J].海洋测绘,2010,30(6):33-36.[CHEN Jie,WEN Ning,WAN Rongsheng,et al.Important marine charting results:the gravity and magnetic anomaly maps of South China Sea[J].Hydrographic Surveying and Charting,2010,30(6):33-36.]
[20]陈洁,温宁.南海地球物理图集[M].北京:科学出版社,2010.[CHEN Jie,WEN Ning.Atlas of Geophysics of the South China Sea[M].Beijing:Science Press,2010.]
[21]杨胜雄,邱燕,朱本铎.南海地质地球物理图系(1:200万)[M].天津:中国航海图书出版社,2015.[YANG Shengxiong,QIU Yan,ZHU Benduo.Atlas of Geology and Geophysics of the South China Sea(1:2000000)[M].Tianjin:China Navigation Publications,2015.]
[22] Sandwell D,Smith W H F.Global marine gravity from retracked Geosat and ERS-1 altimetry:Ridge segmentation versus spreading rate[J].Journal of Geophysical Research:Solid Earth,2009,114(B1):B01411.
[23]万剑华,李家军,刘善伟,等.基于Cryosat-2数据的南海2′×2′重力异常计算与分析[J].中国石油大学学报:自然科学版,2015,39(3):70-75.[WAN Jianhua,LI Jiajun,LIU Shanwei,et al.Calculation and analysis of 2'×2'gravity anomalies over the South China Sea based on Cryosat-2satellite altimeter data[J].Journal of China University of Petroleum,2015,39(3):70-75.]
[24]李淑玲,孟小红,郭良辉,等.南海重力异常特征及其显著的构造意义[J].现代地质,2012,26(6):1154-1161.[LI Shuling,MENG Xiaohong,GUO Lianghui,et al.Characteristics of gravity anomalies in the South China Sea and their tectonic implications[J].Geoscience,2012,26(6):1154-1161.]
[25]晁定波,姚运生,李建成,等.南海海盆测高重力异常特征及构造解释[J].武汉大学学报:信息科学版,2002,27(4):343-347.[CHAO Dingbo,YAO Yunsheng,LI Jiancheng,et al.Interpretaion on the tectonics and characteristics of altimeter-derived gravity anomalies in China South Sea[J].Geomatics and Information Science of Wuhan University,2002,27(4):343-347.]
[26]姚运生,姜卫平,晁定波.南海海盆重力异常场特征及构造演化[J].大地构造与成矿学,2001,25(1):46-54.[YAO Yunsheng,JIANG Weiping,CHAO Dingbo.Study of the gravity anomaly and construction evolution in the South China Sea Basin[J].Geotectonica et Metallogenia,2001,25(1):46-54.]
[27]丁巍伟,陈汉林,杨树锋,等.南海西南次海盆与东部次海盆地质与地球物理分析[J].高校地质学报,2002,8(3):268-279.[DING Weiwei,CHEN Hanlin,YANG Shufeng,et al.Geological and geophysical analysis of the southwestern and eastern Sub-Basins,South China Sea[J].Geological Journal of China Universities,2002,8(3):268-279.]
[28]王懋基,宋正范,尹春霞.南海卫星重力研究[J].物探与化探,1998,22(5):329-335,328.[WANG Maoji,SONG Zhengfan,YIN Chunxia.Satellite gravity study on South China sea[J].Geophysical and Geochemical Exploration,1998,22(5):329-335,328.]
[29]武粤,孟小红,刘国峰.南海北部缘重力异常的多尺度分析及其构造讨论[J].现代地质,2012,26(6):1162-1167.[WU Yue,MENG Xiaohong,LIU Guofeng.Multi-scale analysis of gravity anomaly and discussion of deep structure in the north margin of South China Sea[J].Geoscience,2012,26(6):1162-1167.]
[30]张菲菲,王万银,杨金玉,等.根据重力数据研究南海北部陆缘断裂带的延伸问题[J].地球物理学进展,2014,29(5):2113-2119.[ZHANG Feifei,WANG Wanyin,YANG Jinyu,et al.Research on the extension of faults zones in northern margin of the South China Sea based on the gravity data[J].Progress in Geophysics,2014,29(5):2113-2119.]
[2]邢怡,滕菲,张国利.利用插值切割法研究重力区域场与局部场的分离[J].地质调查与研究,2014,37(3):193-196.[XING Yi,TENG Fei,ZHANG Guoli.An interpolating cut method for separation of regional and local gravity field[J].Geological Survey and Research,2014,37(3):193-196.]
[3]胡德昭,朱慧娟.地球物理学原理及应用[M].南京:南京大学出版社,1995.[HU Dezhao,ZHU Huijuan.Geophysical Principles and Applications[M].Nanjing:Nanjing University Press,1995.]
[4]管志宁,张昌达,申宁华.磁法勘探重要问题理论分析与应用[M].北京:地质出版社,1993.[GUAN Zhining,ZHANG Changda,SHEN Ninghua.Theoretical Analysis and Application of Important Problems in Magnetic Prospecting[M].Beijing:Geological Publishing House,1993.]
[5]余运洋,黄国祥.卡尔曼滤波在重磁异常划分中的应用[J].物探化探计算技术,1991,13(3):220-228.[YU Yunyang,HUANG Guoxiang.Application of Kalman filtering theory to regional-residual separation of gravity or magnetic anomalies[J].Computing Techniques for Geophysical and Geochemical Exploration,1991,13(3):220-228.]
[6]韩兆红,吴燕冈,张成海,等.自相关滤波法提取重磁场中弱异常[J].世界地质,2010,29(1):124-129.[HAN Zhaohong,WU Yangang,ZHANG Chenghai,et al.Extracting weak anomaly in gravity and magnetic field with self-correlation filtering method[J].Global Geology,2010,29(1):124-129.]
[7] Agarwal B N P,Sivaji C.Separation of regional and residual anomalies by least-squares orthogonal polynomial and relaxation techniques:aperformance evaluation[J].Geophysics,1992,40(2):143-156.
[8] Fedi M,Quarta T.Wavelet analysis for the regional-residual and local separation of potential field anomalies[J].Geophysical Prospecting,1998,46(5):507-525.
[9]李宗杰,杨林,王勤聪.小波变换在位场数据处理中的应用[J].石油物探,1997,36(2):86-93.[LI Zhongjie,YANG Lin,WANG Qincong.Application of the wavelet transform in potential field data processing[J].Geophysical Prospecting for Petroleum,1997,36(2):86-93.]
[10]耿喜哲,刘天佑,丁艳红,等.小波神经网络在重磁资料反演中的应用前景[J].物探与化探,2001,25(2):102-108,116.[GENG Xizhe,LIU Tianyou,DING Yanhong,et al.The prospect of applying wavelet neural network to the inversion of gravitational and magnetic data[J].Geophysical&Geochemical Exploration,2001,25(2):102-108,116.]
[11]王霞,吴新林,李克鲁.航磁数据多重分形研究及应用[J].铀矿地质,1999,15(6):356-360.[WANG Xia,WU Xinlin,LI Kelu.Fractal study of aeromagnetic data and its application[J].Uranium Geology,1999,15(6):356-360.]
[12]程方道,刘东甲,姚汝信.划分重力区域场与局部场的研究[J].物化探计算技术,1987,9(1):1-9.[CHENG Fangdao,LIU Dongjia,YAO Ruxin.A study on the identification of regional and local gravity fields[J].Computing Techniques for Geophysical and Geochemical Exploration,1987,9(1):1-9.]
[13]文百红.插值切割法在消除磁异常干扰中的应用[J].地质与勘探,1991,27(2):40-45.[WEN Baihong.Application of the interpolation cut method to disturbance elimination for magnetic anomalies[J].Geology and Prospecting,1991,27(2):40-45.]
[14]段本春,徐世浙.磁(重力)异常局部场与区域场分离处理中的扩边方法研究[J].物探化探计算技术,1997,19(4):298-304.[DUAN Benchun,XU Shizhe.A study of the scheme of extending edge in the processing of separating local field from regional field for magnetic/gravity anomaly[J].Computing Techniques for Geophysical and Geochemical Exploration,1997,19(4):298-304.]
[15]汪炳柱,徐世浙,刘保华,等.多次插值切割法分场的一个实例[J].石油地质物理勘探,1997,32(3):431-438.[WANG Bingzhu,XU Shizhe,LIU Baohua,et al.An example of aeromagnetic anomaly separation using multi-interpolation division[J].Oil Geophysical Prospecting,1997,32(3):431-438.]
[16]段本春,徐世浙,阎汉杰,等.划分磁异常场的插值切割法在研究火成岩体分布中的应用[J].石油地质物理勘探,1998,33(1):125-131.[DUAN Benchun,XU Shizhe,YAN Hanjie,et al.Application of interpolation-cut method for magnetic anomaly division to igneous mass investigation[J].Oil Geophysical Prospecting,1998,33(1):125-131.]
[17]张虹.重磁资料异常分离与构造边界识别方法的应用分析[J].中小企业管理与科技,2016(2):241.[ZHANG Hong.Application analysis of anomaly separation of gravity and magnetic data and identification of tectonic boundaries[J].Management&Technology of SME,2016(2):241.]
[18]陈洁,朱本铎,温宁,等.南海海岛海山的重磁响应特征[J].地球物理学报,2012,55(9):3152-3162.[CHEN Jie,ZHU Benduo,WEN Ning,et al.Gravity-magnetic response of the islands and seamounts of South China Sea[J].Chinese Journal of Geophysics,2012,55(9):3152-3162.]
[19]陈洁,温宁,万荣胜,等.重要的海洋测绘成果——南海重磁异常图[J].海洋测绘,2010,30(6):33-36.[CHEN Jie,WEN Ning,WAN Rongsheng,et al.Important marine charting results:the gravity and magnetic anomaly maps of South China Sea[J].Hydrographic Surveying and Charting,2010,30(6):33-36.]
[20]陈洁,温宁.南海地球物理图集[M].北京:科学出版社,2010.[CHEN Jie,WEN Ning.Atlas of Geophysics of the South China Sea[M].Beijing:Science Press,2010.]
[21]杨胜雄,邱燕,朱本铎.南海地质地球物理图系(1:200万)[M].天津:中国航海图书出版社,2015.[YANG Shengxiong,QIU Yan,ZHU Benduo.Atlas of Geology and Geophysics of the South China Sea(1:2000000)[M].Tianjin:China Navigation Publications,2015.]
[22] Sandwell D,Smith W H F.Global marine gravity from retracked Geosat and ERS-1 altimetry:Ridge segmentation versus spreading rate[J].Journal of Geophysical Research:Solid Earth,2009,114(B1):B01411.
[23]万剑华,李家军,刘善伟,等.基于Cryosat-2数据的南海2′×2′重力异常计算与分析[J].中国石油大学学报:自然科学版,2015,39(3):70-75.[WAN Jianhua,LI Jiajun,LIU Shanwei,et al.Calculation and analysis of 2'×2'gravity anomalies over the South China Sea based on Cryosat-2satellite altimeter data[J].Journal of China University of Petroleum,2015,39(3):70-75.]
[24]李淑玲,孟小红,郭良辉,等.南海重力异常特征及其显著的构造意义[J].现代地质,2012,26(6):1154-1161.[LI Shuling,MENG Xiaohong,GUO Lianghui,et al.Characteristics of gravity anomalies in the South China Sea and their tectonic implications[J].Geoscience,2012,26(6):1154-1161.]
[25]晁定波,姚运生,李建成,等.南海海盆测高重力异常特征及构造解释[J].武汉大学学报:信息科学版,2002,27(4):343-347.[CHAO Dingbo,YAO Yunsheng,LI Jiancheng,et al.Interpretaion on the tectonics and characteristics of altimeter-derived gravity anomalies in China South Sea[J].Geomatics and Information Science of Wuhan University,2002,27(4):343-347.]
[26]姚运生,姜卫平,晁定波.南海海盆重力异常场特征及构造演化[J].大地构造与成矿学,2001,25(1):46-54.[YAO Yunsheng,JIANG Weiping,CHAO Dingbo.Study of the gravity anomaly and construction evolution in the South China Sea Basin[J].Geotectonica et Metallogenia,2001,25(1):46-54.]
[27]丁巍伟,陈汉林,杨树锋,等.南海西南次海盆与东部次海盆地质与地球物理分析[J].高校地质学报,2002,8(3):268-279.[DING Weiwei,CHEN Hanlin,YANG Shufeng,et al.Geological and geophysical analysis of the southwestern and eastern Sub-Basins,South China Sea[J].Geological Journal of China Universities,2002,8(3):268-279.]
[28]王懋基,宋正范,尹春霞.南海卫星重力研究[J].物探与化探,1998,22(5):329-335,328.[WANG Maoji,SONG Zhengfan,YIN Chunxia.Satellite gravity study on South China sea[J].Geophysical and Geochemical Exploration,1998,22(5):329-335,328.]
[29]武粤,孟小红,刘国峰.南海北部缘重力异常的多尺度分析及其构造讨论[J].现代地质,2012,26(6):1162-1167.[WU Yue,MENG Xiaohong,LIU Guofeng.Multi-scale analysis of gravity anomaly and discussion of deep structure in the north margin of South China Sea[J].Geoscience,2012,26(6):1162-1167.]
[30]张菲菲,王万银,杨金玉,等.根据重力数据研究南海北部陆缘断裂带的延伸问题[J].地球物理学进展,2014,29(5):2113-2119.[ZHANG Feifei,WANG Wanyin,YANG Jinyu,et al.Research on the extension of faults zones in northern margin of the South China Sea based on the gravity data[J].Progress in Geophysics,2014,29(5):2113-2119.]
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