天水地震台流体异常与汶川8.0级地震关系探讨

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英文篇名：Discussion on Relationship between Fluid Anomalies at Tianshui Station and Wenchuan 8.0 Earthquake 中文刊名：防灾科技学院学报 英文刊名：Journal of Institute of Disaster-Prevention Science and Technology 作者：王燕 ; 杨兴悦 ; 周建华 英文作者：Wang Yan 1 ; Yang Xingyue2 ; Zhou Jianhua 3(1.Seismological Center Station of Tianshui ; Earthquake Administration of Gansu 741020 ; 2.Wushan Seismic Station ; Earthquake Administration of Gansu 741308 ; 3.Golmud Seismic Station ; Earthquake Administration of Qinghai province 816000) 中文关键词：天水台 ; 地下流体 ; 汶川地震 ; 异常 英文关键词：Tianshui Station ; underground fluid ; Wenchuan earthquake ; anomaly. 出版日期：2009-12-15 机构：甘肃省地震局天水中心地震台;甘肃省地震局武山地震台;青海省地震局格尔木地震台; 年：2009 期：04 出版单位：防灾科技学院学报

摘要

通过对天水台(包括子台)2008年流体资料分析,在汶川8.0地震前天水流体资料短临异常明显,同震效应突出。模拟水氡观测震前1～3月开始出现异常,5个测点基本同步变化,其特征表现为测值迅速下降,然后出现转折,在上升过程中发生地震。数字化水温资料则出现同震效应,表现为水温测值大幅下降或上升,然后在几小时内恢复。数字化水位资料出现了震后效应,表现为测值持续下降,逐渐放缓下降速率,并保持低值未恢复到原来状态。通过总结分析天水台流体资料异常,对天水台及邻区的地震趋势判断是有益的。
The fluid data at Tianshui Station(including branch stations) in 2008 show that there were some obviously abnormal changes before Wenchuan 8.0 earthquake,and there were some markedly co-seismic effect.During one to three months before the earthquake,the radon observation found anomalies,with similar observation results in five branch stations: the value decreased dramatically,and then recovered,during which the earthquake took place.Digital water temperature had co-seismic effect: water temperature dramatically decreased or increased,and recovered to its normal state in several hours.Digital water level showed after-quake effect,with continuous decrease,whose rate slowed down gradually.And the level never returned to the original state.The comparative summary of fluid anomalies will be helpful to judge the earthquake tendency in Tianshui and nearby regions.

引文

[1]张新基,赵仪全,刘耀炜,等.甘肃地震监测志[M].兰州:兰州大学出版社,2005:92-96.
    [2]杨兴悦,王燕,闫万生,等.武山22号井水氡中期异常与地震关系的探讨.[J].西北地震学报,2006,(28)4:379-380.
    [3]杨竹转,邓志辉,陶京玲,等.北京塔院井数字化观测水温的同震效应研究.[J].地震学报,2007,(29)2:203-213.
    [4]付虹,刘丽芳,王世芹,等.地方震及近震地下水同震震后效应研究,2002,(22)4:55-66.