Abstract：The step change of the atmospheric pressure coefficient of Qingdao station in a short period(less than 128 min) occurred in January 2018. Through on-site verification analysis of the observation system, construction situation near the station and observation environment, the two factors of observation system and construction near the station are excluded. Using discrete wavelet transform and regression analysis, the paper finds that the variation of atmospheric pressure coefficient of borehole water level and volumetric strain is synchronous. To determine the reason for the variation of atmospheric pressure coefficient of the volumetric strain, the paper studies the water level variation of volumetric strain borehole on the day of drilling construction, the trend variation of volumetric strain of Qingdao station, and variation of atmospheric pressure coefficient of water level at other adjacent seismic stations. The results show that drilling construction is the cause of variation of atmospheric pressure coefficient of volumetric strain and the change mechanism is qualitatively analyzed.
YUE Long,XU Qingfeng,ZANG Yibo et al. Discussion on the Variation of Short-Period Atmospheric Pressure Coefficient of the Volumetric Strain at Qingdao Station[J]. jgg, 2020, 40(7): 765-770.
