| 青藏高原布格重力异常匹配滤波分析及其构造意义 |
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| 引用本文： | 郑洪伟,孟令顺,贺日政.青藏高原布格重力异常匹配滤波分析及其构造意义[J].中国地质,2010,37(4):995-1001. |
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| 作者姓名： | 郑洪伟 孟令顺 贺日政 |
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| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037
2. 吉林大学地球探测科学与技术学院,吉林,长春,130026 |
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| 基金项目： | 国家自然科学基金，中国地质科学院地质研究所基本科研业务费，科技部国际合作项目，地下信息探测技术与仪器教育部重点实验室(中国地质大学;北京)开放课题项目，SinoProbe-2资助 |
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| 摘 要： | 利用匹配滤波的方法处理了青藏高原布格重力异常数据。基于重力异常一阶垂直导数的径向平均对数能谱曲线,青藏高原布格重力异常场可分为三层异常场。其中龙木错—双湖构造带在中部重力异常场和深部重力异常场图中都有显现;革吉—改则—错勤—申扎隐伏断裂在浅部和中部重力异常场中都存在。另一个明显的特征是藏北都显示有巨大且平缓的低重力异常圈闭,这与藏北Pn波速较低和Sn波缺失的特征吻合;在藏南存在一系列近东西向展布的重力异常断块。
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| 关 键 词： | 青藏高原 重力异常匹配滤波 龙木错-双湖构造带 革吉-改则-错勤-申扎隐伏断裂 |
The matched-filter analysis of Bouguer gravity anomaly in Qinghai-Tibet Plateau and its tectonic implications |
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| ZHENG Hong-wei,MENG Ling-shun,HE Ri-zheng.The matched-filter analysis of Bouguer gravity anomaly in Qinghai-Tibet Plateau and its tectonic implications[J].Chinese Geology,2010,37(4):995-1001. |
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| Authors: | ZHENG Hong-wei MENG Ling-shun HE Ri-zheng |
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| Institution: | ZHENG Hong-wei1,MENG Ling-shun2,HE Ri-zheng1(1.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China,2.College of Geoexploration Science and Technology,Jilin University,Changchun 130026,Jilin,China) |
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| Abstract: | Bouguer gravity anomaly data from Qinghai-Tibet plateau were processed by the match-filter method.According to he first order vertical derivative radial average logarithmic energy spectrum curves,the Bouguer gravity anomaly in Qinghai-Tibet Plateau can be divided into three layers.The Longmuco-Shuanghu tectonic zone is always discerned in the middle and deep gravity anomaly field,whereas the Geji-Gaze-Cuoqen-Shenza concealed fault is always existent in the shallow and middle gravity anomaly field.There is a... |
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| Keywords: | Tibet matched-filter analysis of Bouguer gravity anomaly Longmuco-shuanghu tectonic zone Geji-Gaze-Cuoqen-Shenza concealed fault |
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