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| 广东新丰江水库地震垂向引潮力的调制作用研究 | |
| 引用本文： | 陈大庆,杨马陵,蒋海昆,钟羽云,万永芳.广东新丰江水库地震垂向引潮力的调制作用研究[J].华南地震,2011,31(2):29-36. |
| 作者姓名： | 陈大庆 杨马陵 蒋海昆 钟羽云 万永芳 |
| 作者单位： | 1. 广东省地震局,广东,广州,510070 2. 中国地震台网中心,北京,100045 3. 浙江省地震局,浙江,杭州,310013 |
| 基金项目： | 国家科技支撑予专题，2009年度震情跟踪一般性合同制定向工作任务 |
| 摘 要： | 按照前人对新丰江水库地震序列特征的研究,以1965年为界将新丰江水库地震序列分为前期和后期,对前期(M<,s>≥4.3)和后期(M<,s>≥4.2)地震垂向引潮力的触发特征进行了研究.发现前期15次M<,s>≥4.3级地震发震时刻垂向引潮力的方向处于向下区间的有12次,占80%;其中M<,s>≥4.5级地震全部都处于垂... |
| 关 键 词： | 引潮力 新丰江水库 调制作用 |
A Study on Tidal Force Triggering of Xinfengjiang Reservoir Induced Earthquake |
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| CHEN Daqing,YANG Maling,JIANG Haikun,ZHONG Yuyun,WAN Yongfang.A Study on Tidal Force Triggering of Xinfengjiang Reservoir Induced Earthquake[J].South China Journal of Seismology,2011,31(2):29-36. | |
| Authors: | CHEN Daqing YANG Maling JIANG Haikun ZHONG Yuyun WAN Yongfang |
| Institution: | 1 (1.Earthquake Administration of Guangdong province,Gangzhou 510070,China; 2.China Earthquake Networks Center,Beijing 100045,China; 3.Earthquake Administration of Zhejiang province,Hangzhou 310013,China) |
| Abstract: | According to the predecessors＇ study on the characteristics of Xinfengjiang reservoir-induced earthquake sequence,it was divided into early period and later period by 1965.This paper studied the characteristics of vertical tidal force leading to earthquakes with MS≥4.3 in early period and MS≥4.2 in later period.We found that there were 12 of 15 earthquakes,where 80% MS≥4.3 and 100% MS≥4.5 earthquakes occurred in the interval of downward compressive stress of vertical tidal force.The results show that the interval of vertical tidal compressive stress is advantage triggering period in early period,based on the high reservoir water level.The six earthquakes with MS≥4.2 after 1980 in later period occurred at the moment of the same direction of vertical tidal force and water level perturbation of force field,which shows that the seismic area is in critical unsteady state and the variation of reservoir water level and vertical tidal compressive stress triggering earthquakes in together.Six earthquakes were reviewed by using modulation ration based on tensile or compressive vertical tidal force.The modulation ration was confirmed of a certain significance for the short-term and imminent prediction. |
| Keywords: | Tidal attraction Xinfengjiang reservoir Modulation ration |
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