| 福建4级地震前地下水位固体潮加卸载响应比研究 |
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| 引用本文： | 张清秀,陈莹,陈懿德,郑小菁,王林,陈彩虹. 福建4级地震前地下水位固体潮加卸载响应比研究[J]. 内陆地震, 2013, 0(3): 212-221 |
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| 作者姓名： | 张清秀 陈莹 陈懿德 郑小菁 王林 陈彩虹 |
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| 作者单位： | 福建省地震局,福建福州350003 |
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| 摘 要： | 根据加卸载响应比理论,对福建省5个水位观测资料进行加卸载响应比计算,发现在多次福建4级地震前出现多井同步异常,在形态上表现为高值突跳,时间上表现为短期或短临异常,空间上与地震所处的构造部位有关.说明地震前近源区含水层系统确实处于临近失稳状态,水位固体潮加卸载响应比可能捕捉到4级以上地震前应力失稳的过程.
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| 关 键 词： | 福建 地震前兆 水位 固体潮 加卸载响应比 同步异常 |
RESEARCH ON EARTH TIDAL LOADING/UNLOADING RESPONSE RATIO OF UNDERGROVND WATER LEVEL BEFORE ML4.0 EARTHQUAKES IN FUJIAN PROVINCE |
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| ZHANG Qing-xiu,CHEN Ying,CHEN Yi-de,ZHENG Xiao-jing,WANG Lin,CHEN Cai-hong. RESEARCH ON EARTH TIDAL LOADING/UNLOADING RESPONSE RATIO OF UNDERGROVND WATER LEVEL BEFORE ML4.0 EARTHQUAKES IN FUJIAN PROVINCE[J]. Inland Earthquake, 2013, 0(3): 212-221 |
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| Authors: | ZHANG Qing-xiu CHEN Ying CHEN Yi-de ZHENG Xiao-jing WANG Lin CHEN Cai-hong |
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| Affiliation: | (Earthquake Administration of Fujian Province, Fuzhou 350003, Fujian, China) |
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| Abstract: | According to the theory of loading/unloading response ratio, the earth tidal loading/unloading response ratio of underground water level data from five water-wells was calculated in Fujian Province. It showed that the abnormal phenomenon of several water- wells appeared before ML4.0 earthquakes in Fujian Province, which reflected the shape above the average value, short-impeding anomalies and seismic tectonic position related. It concluded that near source rock aquifer system is in a near instable state before the earthquake, and the earth tidal loading/unloading response ratio may get the stress instability process before ML4.0 earthquake. |
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| Keywords: | Fujian Earthquake precursor Groundwater level Earth tide Loading/unloading response ratio Synchronism anomaly |
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