东大什井水位对近场中强震和远场大震的同震响应特征分析

Analysis of Coseismic Response Characteristics of Dongdashi Well Water Level by Near-Fault Moderate-Strong Earthquakes and Far-Fault Large Earthquakes

摘要: 本文收集整理了东大什井水位在2011~2020年间近场中强震和远场大震的同震响应变化，分析其变化特征，并结合东大什井周边区域构造概况，探讨其成因机理。结果表明，东大什井水位对远场大震和近场中强震有响应能力，分别表现为阶降和振荡两种响应形态，地震的地震能量密度、震中距都会对水位波动的持续时间和变化幅度产生影响。东大什井水位同震变化或与查干泡–道子井断裂带的活动存在联系，这对松原地区地震的发震构造判断具有一定的指示意义。

Abstract: This paper collects and organizes the coseismic response changes in the water level of Dongdashi Well by near-fault moderate-strong earthquakes and far-fault large earthquakes from 2011 to 2020, analyzes their characteristics and combines with the structural overview of the surrounding area of Dongdashi Well to explore the genesis mechanism. The results show that the water level of Dongdashi Well has the ability to respond to far-fault large earthquakes and near-fault moderate-strong earthquakes, and shows two response forms: step down and oscillation. The earthquake energy density and distance from epicenter will both affect the duration and amplitude of water level fluctuations. Coseismic changes in water level in Dongdashi Well may be related to the activity of the Chaganpao-Daozijing fault zone, which has certain indicative significance for the determination of seismic structures in the Songyuan area.