河北冀21井数字化水位同震效应特征

Characteristics of Digital Water Level Coseismic Effect in Hebei Well-21

选取2016年1月1日至2017年12月31日期间,大陆6级以上、全球7级以上地震的河北冀21井水位同震观测资料,研究该井水位同震效应的形态特征、记震能力。结果表明,水位对远场大震记录(较长波段的面波)比较灵敏,水位同震效应最大振幅总体上与地震强度成正比,与震中距关系不甚明显;并总结出井-含水层记录的波形频段范围,为观测资料异常分析提供基础信息。

Based on water level coseismic observation data in Hebei well-21 from January 1,2016 to December 31,2017of M≥6 mainland earthquakes and M≥7 global earthquakes,the morphological characteristics and seismic recording ability of the coseismic effect in the well water level were studied.The result show that the water level is sensitive to the record of large earthquakes in the far field(the surface wave in the longer wave band).The waveform frequency range recorded by well-aquifer is summarized to provide basic information for anomaly analysis of observation data.