| 浙江湖南镇水库区地震成因的初步探讨 |
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| 引用本文： | 胡毓良,陈献程.浙江湖南镇水库区地震成因的初步探讨[J].地震地质,1982,4(3):45. |
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| 作者姓名： | 胡毓良 陈献程 |
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| 作者单位： | 国家地震局地质研究所
(胡毓良)，国家地震局地质研究所(陈献程) |
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| 摘 要： | 湖南镇水库蓄水后五个月,在大坝上游15公里库岸边开始出现地震。这些地震大部分是极微震。震源位置变化不大,深度极浅。地震活动对库水位变化的反映十分明显,滞后时间很短。根据库区地质、地震记录和宏观的一些特点,推测地震可能是库岸不稳定岩体的水下重力滑移引起的
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| 关 键 词： | 湖南镇水库 地震记录 地震成因 库岸 库水位 震中区 浙江 P波初动 地震活动 重力滑移 |
PRELIMINARY STUDY ON THE CAUSE OF SEISMICITY IN THE HUNANZHEN RESERVOIR AREA, ZHEJIANG PROVINCE |
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| Abstract: | The Hunanzhen reservoir with a dam 129m high and a volume of 2.06 billion m3 is located in Quxian County, Zhejiang province. The seismic activity started along the bank 15km up stream from the dam, 5 months after impounding of this reservoir. The earthquake of magnitude 2.8(Ms)occurred on October 7, 1979 and caused a light damage in the central area. A mobile seismograph was installed in the epicentral area and from March 14 to May 26, 1980 1483 tremors were recorded. Most of them are ultramicro |
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