嘉峪关地震台地电阻率观测效能评价
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摘要
根据中国地震局电磁学科制定的《地电台站观测效能评估方案》,评估了嘉峪关地震台地电阻率观测效能,得到:嘉峪关地震台台址结构条件、电磁环境、台站观测系统符合地电阻率台站建设规范、观测方法标准等规定的技术要求;数字化地电阻率观测精度不低于3‰测值,保证了准确测量不低于1%地电阻率异常的指标需求;该台地电阻率观测对本区及附近中等以上地震有一定监测能力,并记录了对应远距离大震的1年尺度地电阻率异常,其观测数据在本区及附近地震监测、预报和地震科学研究及相关科学研究中有重要价值。
According to the "Broadcasting station Observation Efficiency Appraisal Plan" established by China Earthquake Administration authority electromagnetism discipline formulation,the observation efficiency of terrace electronic resistivity observation system in Jiayuguan Seismic Station is estimated. The results show that the site structure condition,the electromagnetic environment and the station observation system in Jiayuguan conform to earth resistivity station stipulation and so on construction standard and standard prescriptive technical specifications about observation method; The digitized earth resistivity observation precision is not lower than 3‰ of measures,which guarantees to satisfy the target demand that the correct measurement is not lower than 1% earth resistivity unusual. The electronic resistivity observation at this station has the capacity to monitor the meddle earthquakes in local and nearby region,and record the 1 year criterion earth-resistivity anomaly of large long-distance earthquakes. Its observation data are high valuable for the earthquake monitor and predication in the local and nearby region and for the research in other discipline.
According to the "Broadcasting station Observation Efficiency Appraisal Plan" established by China Earthquake Administration authority electromagnetism discipline formulation,the observation efficiency of terrace electronic resistivity observation system in Jiayuguan Seismic Station is estimated. The results show that the site structure condition,the electromagnetic environment and the station observation system in Jiayuguan conform to earth resistivity station stipulation and so on construction standard and standard prescriptive technical specifications about observation method; The digitized earth resistivity observation precision is not lower than 3‰ of measures,which guarantees to satisfy the target demand that the correct measurement is not lower than 1% earth resistivity unusual. The electronic resistivity observation at this station has the capacity to monitor the meddle earthquakes in local and nearby region,and record the 1 year criterion earth-resistivity anomaly of large long-distance earthquakes. Its observation data are high valuable for the earthquake monitor and predication in the local and nearby region and for the research in other discipline.
引文
杜学彬等.2007.强地震附近视电阻率各向异性变化的原因[J].地球物理学报,50(6):1802～1810
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赵玉林,钱复业等.1988.地电台的最佳台址条件-岩石电阻率对应变的高放大系数及低的干扰幅度[M].见:地震监测与预报方法清理成果汇编,北京:地震出版社,170～179
Du X B,Ruan A G,Fan S Hetal.2001.Anisotropy of the apparent resistivity variation rate near the epicentral region forstrong earthquake[J].Acta Seismologica Sinica,14(3):303～314
杜学彬等.1999.中国大陆多种前兆异常研究及强震的尝试性预测[J].西北地震学报,21(2):1～22
杜学彬,马占虎等.强地震附近电阻率四极对称观测的探测深度问题(待刊)
杜学彬,谭大诚.2000.地电阻率1年尺度异常时空强丛集现象与地震活动性[J].中国地震,16(3):283～292
杜学彬,赵家骝等.2006.地震台站观测技术规范地电台站第1部分(DB/T18.1-2006)[M].北京:地震出版社
国家地震局科技监测司.1990.地震学分析预报方法程式指南[M].北京:地震出版社
钱家栋,陈有发,金安忠.1985.视电阻率法在地震预报中的应用[M].北京:地震出版社
钱家栋,顾左文,赵家骝等.2004.地震台站观测环境技术要求(GB/T19531.2-2004)[M].北京:中国标准出版社,14～29
赵玉林,钱复业等.1988.地电台的最佳台址条件-岩石电阻率对应变的高放大系数及低的干扰幅度[M].见:地震监测与预报方法清理成果汇编,北京:地震出版社,170～179
Du X B,Ruan A G,Fan S Hetal.2001.Anisotropy of the apparent resistivity variation rate near the epicentral region forstrong earthquake[J].Acta Seismologica Sinica,14(3):303～314
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