COSEISMIC RESPONSE ANALYSIS OF WATER LEVEL AND WATER TEMPERATURE IN NEW 55 WELL AND NEW 46 WELL CAUSED BY WUSHI MS7.1 EARTHQUAKE
In order to study the response changes of water levels in New 55 and New 46 wells caused by Wushi MS7.1 earthquake,the co-seismic response characteristics of water levels in observation wells were compared and analyzed,and the co-seismic response mechanism was discussed from the changes of aquifer permeability and seismic wave energy density.The results show that:1 The co-seismic response of Jiashi New 55 well and Wushi New 46 well is mainly characterized by the rapid rise of well water level.The results of solid tide calculation and analysis show that when the seismic wave acts on New 55 well and New 46 well,the vertical hydraulic exchange of the former is en-hanced,the horizontal hydraulic exchange is weakened,and the water in the aquifer is exchanged with the well water,causing the co-seismic rise of the well water level.The permeability of the latter aquifer increases,and the aquifer water exchanges with the well water,causing the co-seismic rise of the well water level.The calculation results of seismic energy density show that New 55 well is easier to trigger the co-seismic response than New 46 well,and this differential response may be related to the lithology of the well aquifer.
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