Characteristics and Mechanism Analysis of Coseismic Response of Dynamic Water Level in Chuan 32 Well

In order to identify the reasons for the different coseismic responses of the same well in different earthquakes, this article takes the digital minute value observation data of the dynamic water level of Chuan 32 Well in Xichang from August 2009 to December 2021 as the research object, and analyzes the coseismic response characteristics of the dynamic water level of Chuan 32 Well to different earthquakes. The results showed that the Chuan 32 well exhibited different coseismic responses to different earthquakes. The type of water shock waves is mainly oscillatory, with a few being step changing, pulse, and composite. The starting time and duration of coseismic response vary among different earthquakes. The relationship between water level and magnitude and well-epitencer indicates that the larger the magnitude, the greater the amplitude of water shock waves, and the larger the epicenter distance, the smaller the amplitude of water shock waves. The results indicate that in different earthquakes, the reason for the complex coseismic response phenomenon of the same well may be the changes in local static and dynamic types and hydrological conditions.