不同力源作用下九江地震台井水位仪与伸缩仪的体应变响应分析  

Analysis of Volumetric Strain Response of Water-level Instrument and Extensometer Caused by the Action of Different Forces in Jiujiang Seismic Station

作　　者：赵爱平 周红艳 

机构地区：[1]江西省地震局,南昌330039

出　　处：《华南地震》2014年第4期94-101,共8页South China Journal of Seismology

基　　金：地震科技星火计划项目XH13014Y资助

摘　　要：根据潮汐因子计算结果,确定了井水位观测格值。又由线应变和水位与体应变转换公式,分别计算了在固体潮、大气压、强远震和承压含水层排水作用下伸缩仪与水位仪的的体应变响应量,二者相对变化率（体应变比值）在0.242-0.668之间,分析比较了二者的响应特征,并初步解释了水位与应变同步变化的物理机制。Based on calculation results of the tidal factor,the paper determines the value of the observation grid of well water level. Then,according to conversion formula of the linear strain and volumetric strain,the paper calculates the volumetric strain magnitudes of the extensometer and water-level instrument caused by tide,atmospheric pressure,strong teleseismics and drainage action of confined aquifer. The relative variance ratios of volumetric strain are between 0.242 and 0.668. The paper analyzes the response characteristics of both,and preliminarily explains the physical mechanism of synchronous changes in the water level and the strain.

关 键 词：水位仪 伸缩仪 体应变响应 气压 强远震 承压含水层排水 

分 类 号：P315.723[天文地球—地震学]