周至深井水震波数字化记录与地震波记录的对比研究
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摘要
介绍了周至深井井孔概况和水位观测的仪器设备配置,通过对2000年10月6日日本本州7.3级地震的水震波数字化记录的频谱分析,与陕西数字地震台网同一地震事件进行对比研究,结果表明,周至深井可以记录到周期大于2 s的水震波,对地动位移的放大倍率约为200倍,带宽大于DK-1地震仪和FBS-3地震计,相当于一台深井宽带地震仪。
The general situation of deep borehole and apparatus for water-level observation at Zhouzhi Seismic Station are described. The spectrum of digital recording of seismic water-level fluctuations of Japan Kyushu earthquake with magnitude 7.3 on October 6, 2000 obtained at Zhouzhi Station is analyzed. A comparative study of it with the digital seismic wave recording of the same event from the Shanxi Digital Seismograph Network is made. The results show that the water-level detector in Zhouzhi deep borehole can record seismic water-level fluctuations with period greater than 2 seconds; amplification of ground displacement in the borehole is about 200 times. The bandwidth of the water-level detector in the borehole is greater than that of DK-1 seismograph and FBS-3 seismometer, equivalent to a broadband seismograph in a borehole of 2500 m deep.
The general situation of deep borehole and apparatus for water-level observation at Zhouzhi Seismic Station are described. The spectrum of digital recording of seismic water-level fluctuations of Japan Kyushu earthquake with magnitude 7.3 on October 6, 2000 obtained at Zhouzhi Station is analyzed. A comparative study of it with the digital seismic wave recording of the same event from the Shanxi Digital Seismograph Network is made. The results show that the water-level detector in Zhouzhi deep borehole can record seismic water-level fluctuations with period greater than 2 seconds; amplification of ground displacement in the borehole is about 200 times. The bandwidth of the water-level detector in the borehole is greater than that of DK-1 seismograph and FBS-3 seismometer, equivalent to a broadband seismograph in a borehole of 2500 m deep.
引文
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殷积涛.1990.井孔水位对几种含水层变形的响应函数[M].见:地震预报方法实用化研究文集:水位水化专集.北京:地震出版社
张子广,万迪堃，董守玉.1998.水震波与地震面波的对比研究及其应用[J].地震,18(4):399～403
刘江,熊水英,李富光等.1986.水震波中的PG、SG震相[J].华北地震科学,4(3):43～47
刘澜波,郑香媛,彭贵荣.1983.地震波引起洼里井水位震荡的初步分析[J].地震,5,12～19
舒优良,李玉明.1998.周至深井地震地下水观测方案及实施结果[J].见:国家地震局三结合课题论文辑.地震地磁观测及研究,31～35
殷积涛.1990.井孔水位对几种含水层变形的响应函数[M].见:地震预报方法实用化研究文集:水位水化专集.北京:地震出版社
张子广,万迪堃，董守玉.1998.水震波与地震面波的对比研究及其应用[J].地震,18(4):399～403
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