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| 山东东部及近海地区中等以上震例前地震活动性参数群体异常研究 | |
| 引用本文： | 冀东普,郑建常,李冬梅,王鹏.山东东部及近海地区中等以上震例前地震活动性参数群体异常研究[J].华北地震科学,2011,29(3):28-33. |
| 作者姓名： | 冀东普 郑建常 李冬梅 王鹏 |
| 作者单位： | 1. 山东省地震局,济南250014;北京大学地球与空间科学学院,北京100871 2. 山东省地震局,济南,250014 3. 山东省地震局,济南250014中国地震局兰州地震研究所,甘肃兰州 730000 |
| 基金项目： | 山东省科技发展计划项目(2008GG10008004) |
| 摘 要： | 对1975年以来山东东部及近海地区16次ML≥4.7级地震前的地震学参数群体异常进行了研究.回顾性检验表明,地震活动性单项参数中,反映地震强度、频度及与强度、频度有关的地震参数异常在本区的中强地震预测中较为有效.参数的时程曲线中Et、QP和η值一般表现为低值或由高值转为下降异常形态,其余参量多数显示为高值异常.在20余... |
| 关 键 词： | 山东东部及近海 地震活动性参数 群体异常 |
A Study on Group Anomalies of Seismic Activity Parameters before Moderate Earthquakes in the Eastern Shandong and Its Offshore Areas |
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| JI Dong-pu,ZHENG Jian-chang,LI Dong-mei,WANG Peng.A Study on Group Anomalies of Seismic Activity Parameters before Moderate Earthquakes in the Eastern Shandong and Its Offshore Areas[J].North China Earthquake Sciences,2011,29(3):28-33. | |
| Authors: | JI Dong-pu ZHENG Jian-chang LI Dong-mei WANG Peng |
| Institution: | JI Dong-pu(1,2),ZHENG Jian-chang1,LI Dong-mei(1,3),WANG Peng1(1.Earthquake Administration of Shandong Province,Jinan 250014,China,2.School of Earth and Space Sciences,Peking University,Beijing 100871,3.Lanzhou Institute of Seismology,CEA,Lanzhou 730000,China) |
| Abstract: | In this paper,the group anomalies of seismic activity parameters appeared before sixteen earthquakes of ML≥4.7 in eastern Shandong and its offshore areas since 1970 are studied.The results show that seismic activity parameters related to seismic intensity and frequency are more sensitive to moderate earthquake.Generally,the values of Et,Qp and η are in low level or drop from high level before moderate earthquake,while the values of the other seismic parameters are in high level.Fourteen seismic activity parameters sensitive to moderate earthquake are selected from twenties,and the group abnormal indexes of which are determined.If more than ten parameters of the fourteens show abnormal,the area may be at the risk of occurring earthquake of ML≥5.0. |
| Keywords: | eastern Shandong and its offshore areas seismic activity parameter group anomaly |
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