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Application Study on Correction Method for Lag of Water Level Response to Earth Tide and Atmospheric Pressure
作者姓名:Geng  Jie
作者单位:Geng Jie,You Benyue and Zhang ZhaodongEarthquake Administration of Shandong Province,Jinan 210014,China
基金项目:This project was sponsored by the Science and Technology Development Program(031060107) ,Shandong Province .
摘    要:INTRODUCTIONBased onthe results gathered after manyyears of seismic groundwater observation,itisfoundthatthe water level in deep wells responds to the earth’s tide and atmospheric pressure and changesaccordingly,not onlyin amplitude ,but also in the phase lag by different degrees .Some phase lagslast onlyfor several minutes ,while some last aslong as more than one hour (Zhang Zhaodong,1988 ;Wang Chengmin,1990) .The result of this theoretical research shows that the phase lag response to…

关 键 词:固体潮  大气压力  滞后效应  地震  地下水观测

Application Study on Correction Method for Lag of Water Level Response to Earth Tide and Atmospheric Pressure
Geng Jie.Application Study on Correction Method for Lag of Water Level Response to Earth Tide and Atmospheric Pressure[J].Earthquake Research in China,2006,20(2):225-231.
Authors:Geng Jie
Institution:Earthquake Administration of Shandong Province, Jinan 210014, China
Abstract:The water level in a deep well instantly responds to the earth's tide and atmospheric pressure, and varies accordingly, not only in terms of amplitude but also in the phase lag. Therefore, phase lag correction is used in analyzing digital groundwater observation data in eastern China. Calculation results presented by the authors in this paper show that the correction method is effective in the identification of anomalous changes for short-term seismic precursors. The correction method can also be applied to the processing of observed deformation and tilt data.
Keywords:Earth tide  Atmospheric pressure  Lag effect  Short-term anomaly  Method
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