中文摘要：

选取福建安溪一号井，利用阶变响应幅度与震级、震中距之间的定量关系，分析该井的同震阶变响应特征。研究表明，降雨对井水位的同震阶变响应有一定影响；降雨通过载荷作用改变井口附近的局部应力状态，从而影响井水位对地震的响应能力。

英文摘要：

By using the quantitative relationship between the well water level change and the earthquake magnitude, the epicentral distance, this paper statistically investigated co-seismic water level step characteristics of Anxi-1 well, Fujian Province. It means that the rainfall loading, which might change the local tectonic stress state within the well area, can make an influence on co-seismic water level changes.