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通过对群众业余地震测报队伍作为地方地震部门群测群防的主力军应具有的四大功能的阐述,分析服当前上海地区的地方地震部门在群测队伍管理上存在的三大困难。根据上海地区地震活动背景和为适应改革开放的新形势的要求,笔者认为,应在地方地震群测队伍的管理中引入当今企业管理中浒的四大运行机制来赋予群测队伍新的活力,增强其凝聚力,使本地区的群测队伍真正成为地方地震群测群防的主力军,迎接新形势的挑战。 相似文献
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《Ground Water Monitoring & Remediation》1988,8(1):98-103
Ground water monitoring is considered to be a significant component of the geological service in the U.S.S.R. Currently, the total number of ground water monitoring wells exceeds 30,000. They are divided into two categories, which are the first class, or basic observation wells, and the second class, or auxiliary observation wells. The main objectives of both monitoring networks are briefly described. The general scheme of ground water monitoring organization is also presented. 相似文献
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本文对甘肃省26个水氡专群观测泉井的构造类型、出露环境、观测技术、仪器设备、资料质量和反映地震能力等进行了较全面的评价,尤其是通过5次中强震例的总结与分析讨论,论证了水氡地震信息的客观存在以及甘肃省水氡台网监测预报地震能力,最后分析了目前预报地震效能不高的主要原因。 相似文献
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Diffusion samplers installed in observation wells were found to be capable of yielding polyethylene to transmit other volatile compounds, such as benzene and toluene, indicates that the samplers can be used for a variety of volatile organic compounds. In wells at the study area, the volatile organic compound concentrations in water samples obtained using the samplers without prior purging were similar to concentrations in water samples obtained from the respective wells using traditional purging and sampling approaches. The low cost associated with this approach makes it a viable option for monitoring large observation-well networks for volatile organic compounds. 相似文献
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怀 4井为国家重点观测井,在多次地震前都有明显的异常出现,对监视北京西北地区的地震起着重要的作用。文中分析了 5次中强地震前怀 4井地下流体测项的异常情况。统计了自 1998年以来周围 300km范围内 4级以上地震前怀 4井流体测项的映震情况。认为怀 4井对其周围 260km范围内≥4 0级的地震反应比较灵敏。并归纳出怀 4井流体测项前兆异常的如下特征: 1)水汞前兆异常形态为突跳型,异常结束后发震; 2)断层气二氧化碳前兆异常形态为多点高值起伏型,异常转折下降中发震; 3)水氡前兆异常形态为阶变型,异常中发震; 4)氢气前兆异常形态为突跳型,异常结束后发震。通过本研究,有助于今后对怀 4井流体异常的识别,根据怀 4井各测项对地震孕育各阶段反映的差异,更容易判定未来地震的发震时刻 相似文献