| 大庆外围盆地地球物理场与盆地基底特征 |
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| 引用本文： | 江为为,涂广红,朱东英,周立宏,肖敦清,高嘉瑞,袁淑琴.大庆外围盆地地球物理场与盆地基底特征[J].地球物理学进展,2006,21(4):1064-1079. |
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| 作者姓名： | 江为为 涂广红 朱东英 周立宏 肖敦清 高嘉瑞 袁淑琴 |
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| 作者单位： | 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 |
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| 基金项目： | 中国科学院知识创新工程重大项目(编号:KZCX1-SW-18)，大港油田基础外协项目(JSFW-0000-00341)联合资助 |
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| 摘 要： | 根据收集到的大庆外围盆地的布格重力异常和航磁异常数据,对外围盆地中的8个盆地进行了地球物理场特征的分析.对各盆地的重力异常进行了由下地壳与上地幔的密度差引起的重力效应的剥离,对磁力异常进行了由居里面起伏引起的磁力效应的剥离.在此基础上应用调和级数法和遗传算法分别反演计算了这8个盆地的重力基底和磁性顶界面，并分析了其基底特征. 各盆地重力基底在0.2~9.0 km之间变化,磁性顶界面在1.8~9.8 km之间变化,其特征反映了各盆地的基本现状.
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| 关 键 词： | 地球物理场特征 调和级数 遗传算法 反演 盆地基底 大庆外围盆地 |
| 文章编号： | 1004-2903（2006）04-1064-16 |
| 收稿时间： | 2006-02-10 |
| 修稿时间： | 2006-06-20 |
Characters of geophysical fields and floor of Daqing outer basins |
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| JIANG Wei-wei,TU Guang-hong,ZHU Dong-ying,ZHOU Li-hong,XIAO Dun-qing,GAO Jia-rui,YUAN Shu-qin.Characters of geophysical fields and floor of Daqing outer basins[J].Progress in Geophysics,2006,21(4):1064-1079. |
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| Authors: | JIANG Wei-wei TU Guang-hong ZHU Dong-ying ZHOU Li-hong XIAO Dun-qing GAO Jia-rui YUAN Shu-qin |
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| Institution: | 1.Institute of geology and geophysics Chinese Academy of Sciences, Beijing 100029; 2. China Petroleum Dagang Oil Company, Tianjin 300280 |
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| Abstract: | Based on Bouguer gravity and the aeromagnetic anomalies data of Daqing outer basins,we analyse the characters of geophysical fields of these basins.We apply the Harmonic series method on gravity data that eliminated gravity effect caused by deep construct to inverse the depth of gravity floor.We use the genetic algorithm method on magnetic data that eliminated magnetic effect caused by deep construct to inverse the depth of magnetic top of these basins.Then we make a future analyse to the characters of these floors.The depth of gravity floor is between 0.2 km and 9.0 km,and the depth of magnetic top is between 1.8 km and 9.8 km.This shows the general status of basins. |
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| Keywords: | geophysical characters harmonic series genetic algorithm inversion Basin floor outer basins of Daqing |
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