| 利用卫星图像研究西藏羌塘及邻区的断裂活动性 |
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| 引用本文： | 李建华.利用卫星图像研究西藏羌塘及邻区的断裂活动性[J].地震地质,1998,20(3):10-207. |
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| 作者姓名： | 李建华 |
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| 作者单位： | 中国地震局地质研究所 |
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| 基金项目： | 中国石油天燃气总公司青藏石油勘探项目 |
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| 摘 要： | 利用１／５０万彩色合成镶嵌的卫星图像，对羌塘块体及邻近大约５０万ｋｍ２地区的断裂活动性进行分析判读。根据断裂的影像特征，将所判读的断裂分成全新世活动、晚更新世活动和第四纪早、中期活动３类。结合本世纪以来的地震活动，分析了主要断裂的活动性。例如位于羌塘盆地以北，全新世明显左行走滑的玛尔盖茶卡－若拉错断裂带上，１９９７年１１月８日发生了玛尼７．５级地震，是该断裂带现代活动的表现
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| 关 键 词： | 断层活动性 卫星图片 西藏 |
A STUDY ON FAULT ACTIVITY OF QINAGTANG AND ITS NEIGHBORING AREAS IN XIZANG (TIBET) BY USING LANDSAT IMAGES |
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| Li Jianhua.A STUDY ON FAULT ACTIVITY OF QINAGTANG AND ITS NEIGHBORING AREAS IN XIZANG (TIBET) BY USING LANDSAT IMAGES[J].Seismology and Geology,1998,20(3):10-207. |
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| Authors: | Li Jianhua |
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| Abstract: | The landsat images of color composit mosaic of 1∶500 000 are used to identify the fault activity in the Qiangtan and its neighboring areas of about 500 000km 2. Based on the image characteristics of fault, the identified faults are grouped into three types which are active in Holocene, late Plastocene, and early middle Quaterary, respectively. Considering earthquakes of this region since 1900, the activity of major faults are analyzed. For example, the Margaichace Ruolacuo fault zone located north to the |
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| Keywords: | Fault activity Satellite photograph Xizang |
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