福建4级地震前地下水位固体潮加卸载响应比研究  

RESEARCH ON EARTH TIDAL LOADING /UNLOADING RESPONSE RATIO OF UNDERGROVND WATER LEVEL BEFORE M_L4. 0 EARTHQUAKES IN FUJIAN PROVINCE

作　　者：张清秀[1] 陈莹[1] 陈懿德[1] 郑小菁[1] 王林[1] 陈彩虹[1] 

机构地区：[1]福建省地震局,福建福州350003

出　　处：《内陆地震》2013年第3期212-221,共10页Inland Earthquake

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。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.

关 键 词：福建 地震前兆 水位 固体潮 加卸载响应比 同步异常 

分 类 号：P315.72[天文地球—地震学]