向荣村ZK46井数字化水位特征分析

利用海口向荣村ZK46井多年水位观测资料，总结井水位正常动态变化规律、典型干扰因素及同震响应特征。结果表明：① ZK46井水位具有明显年变规律，受海潮、固体潮和气压潮复合影响；②井水位观测所受干扰主要为人为干扰，其次为观测系统和自然环境干扰，且各种干扰的表现形式不同；③对于不同地震，井水位同震响应形态、持续时间和最大震幅等各不相同，主要表现在：在形态上，大地震引起的同震响应为震荡型，中强地震引起的同震响应为固体潮畸变；震荡时间因震级和震中距不同而不同，最长196 min，最短10 min；震级越大，最大震幅越大。

Analysis of digital water level characteristics of ZK46 well in Xiangrong village

This paper accumulates many years of water level observation data of ZK46 well in Xiangrong village of Haikou and summarizes the normal dynamic regularity of the well water level, the typical interference factors, and the co-seismic response characteristics. It shows that the water level of ZK46 well in Xiangrong village has obvious annual change regularity, which is affected by the compound of the tide, solid tide, and air pressure tide; the water level observation of ZK46 well in Xiangrong village is mainly affected by human activities, observation system, and natural environment with different forms for different interference factors; the co-seismic response of the water level of ZK46 well in Xiangrong village is different in form, duration and maximum magnitude for different earthquakes. In terms of form, the co-seismic response caused by a large earthquake shows fluctuation and the co-seismic response caused by a medium-strong earthquake shows solid tide distortion. In terms of duration, the oscillation time varies depending on the magnitude and epicentral distance with the longest of 195 min and the shortest of 10 min. For the maximum magnitude, the earthquakes with greater magnitude generate the greater maximum magnitude.