反常系数法在三峡地区断裂活动性评价中的应用
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摘要
利用反常系数法对三峡地区的断裂活动性进行了初步研究．结论认为，反常系数在空间上明显呈带状异常分布，断裂通过处Ｋ值系数发生突变，在排除非构造因素之后，可作为断裂活动性的一种标志．并进一步认为，三峡地区的高桥断裂、水田坝断裂、雾渡河断裂、仙女山断裂和九湾溪断裂均属活动性断裂
The abnormal coefficient method is used in studying the activity of faults in the Three Gorges region. The results indicates that the distribution of abnormal coefficient has a distinct belted nature. The anomalous value suddenly changes near the faults. This is a sign of active fault. Thus, Gaoqiao fault, Shuitianba fault, Wudu Creek fault, Xiannu Mountain fault and Jiuwan Creek fault are regarded as active faults in Three Gorges region.
The abnormal coefficient method is used in studying the activity of faults in the Three Gorges region. The results indicates that the distribution of abnormal coefficient has a distinct belted nature. The anomalous value suddenly changes near the faults. This is a sign of active fault. Thus, Gaoqiao fault, Shuitianba fault, Wudu Creek fault, Xiannu Mountain fault and Jiuwan Creek fault are regarded as active faults in Three Gorges region.
引文
〔1〕李愿军，沂沭断裂带两侧构造水系的变形与地震活动性中国地震，1986年第3期．〔2〕杜恒俭，陈华慧，曹伯勋主编，地貌学及第四纪地质学地质出版社，1981年．〔3〕李愿军，关于高桥断裂及其活动性的讨论华北地震科学，1995年第13卷第1期．〔4〕黄汲清指导，任纪舜等执笔，中国大地构造及其演化科学出版社，1980年〔5〕李愿军，长江三峡地区地壳形变特征及其构造意义地震地质，1991年第13卷第3期〔6〕李愿军，湖北省地震活动的几点讨论地震研究文集，地震出版社，1990年
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