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我国地震前兆观测井水位观测网监测效能评估分析
刘春国1) 孔令昌1) 杨竹转2) 樊春燕1) 陈华静1)
1)中国地震台网中心,北京市西城区三里河南横街5号 100045/2)中国地震局地质研究所,北京 1000029
摘要:
“十五”数字化网络项目完成后,我国地震前兆观测井水位观测网已颇具规模。为了摸清其监测现状,为未来台网优化改造、仪器更新提供依据,开展了观测网的清理和监测效能评估。评估结果显示,总体上,观测网中有61.8%的水位观测站监测效能良好。 73.5%的观测站观测环境符合地震井水位观测要求,75%的观测仪器运行率在95%以上。观测网的运维状态总体趋好,大部分的井水位监测地壳应力变化、地震活动的能力较强。但仍然有些观测站,因观测井先天不足、环境干扰、仪器老化、运维水平低等问题,亟待通过观测环境改造、仪器更新、运维管理培训等措施来提高监测效能水平。大约有6.5%的观测站因观测环境不合格需要停测。
关键词:  井水位观测网  观测环境  观测仪器  监测效能
DOI:
分类号:
基金项目:
Monitoring Efficiency Evaluation of the Well-water-level Observation Network in China1
Liu Chunguo1),Kong Lingchang1),Yang Zhuzhuan2),Fan Chunyan1) and Chen Huajing1)
1) China Earthquake Networks Center,Beijing 100045,China/2) Institute of Geology,CEA,Beijing 100029,China
Abstract:
In order to understand the monitoring efficiency status of the well-water-level observation network in China after the completion of the 10th “Five-year Plan”digital network project,and to provide a basis for the future network optimization and equipment updating,the monitoring efficiency of the well-water-level observation network was evaluated. On the whole,61. 8% observing stations have good monitoring effectiveness, the observation environment of 73. 5% of observing stations meets the monitoring requirements of well-water-level. The operation status of the network is as a whole getting better,operation rates of 75% observing instruments are above 95%. Most well water levels can monitor crustal stress changes and seismic activities. However,some observation stations,due to inherent deficiency in wells,environmental disturbance,instrument aging, and low-level operation and maintenance,need to improve the monitoring efficiency level by taking measures such as observation environment improvement,equipment updating, and management training. About 6. 5% of the stations need to stop observation due to the unqualified observational environment.
Key words:  Well-water-level observation network  Observation environment  Observation instrument  Monitoring efficiency