The Characteristics and Mechanism of Coseismic Response of Wellwater Level and Water Temperature of Jiangnan Well in Liangjiang, Fuzhou
QIN Shuanglong
LIU Shuilian
LIAO Lixia
HONG Xuyu
Abstract：This paper analyzes the coseismic response of well water level,water temperature data of Jiangnan well in Lianjiang for multiple large earthquakes,and the cosemic form of Jiangnan well in several large earthquakes is water level shock-water temperature falling-water temperature rising type or water level shock-water temperature rising type.Analysis shows that:the amplitude of coseismic changes of water level decreases with the epicentral distance increases,and increase of the magnitude increase.Combining with the previous proposed coseismic response mechanism,the paper further explores the mechanism of coseimic phenomena of well water level.The results show that:vibration effect of well water level of Jiangnan well resulted by the seismic wave lead to increase of the downward vertical velocity of groundwater and the rapid mixing of upper cold water mixing rapid with the observation aquifer,which cause the temperature decreased rapidly;because of the earthquake wave stimulates the hot water in the deeper layers of the well to be mixed into the wellbore,resulting in an increase in water temperature.After the earthquake,the vibration stopped and the hot aquifer mixing channel is closed.The water temperature was gradually returned to the background level by the heat transfer between the borehole wall and well water.
Keywords：Water levelWater temperatureCoseismic responseCoseismic mechanismAquifer
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 50-57 )