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玉树台井水温变化及其与青藏块体周缘大地震间的关系
王博1, 马玉川1, 马玉虎2
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.青海省地震局, 西宁 810001
摘要:
分析了2008~2015年间玉树台井水温变化趋势,发现有5次异常变化,其中4次与青藏块体及周缘的大地震活动有一定相关性。对水温异常变化幅度、异常出现时间与震级以及井震距的进一步分析发现,玉树台井水温变化幅度随井震距的减小而增大;从异常出现时间来看,震级越大,从异常出现到地震发生的时间间隔越短。
关键词:  玉树  水温  青藏块体  地震
DOI:
分类号:P315
基金项目:中国地震局震情跟踪定向工作任务(2016030302)、地震监测预报专项(20160107)共同资助
Variation of water temperature in the Yushu well and its correlation with the strong earthquakes in the Qinghai-Tibetan block
Wang Bo1, Ma Yuchuan1, Ma Yuhu2
1.China Earthquake Networks Center, Beijing 100045, China;2.Earthquake Administration of Qinghai Province, Xining 810001, China
Abstract:
We analyze the water temperature changes in the Yushu well,and found that four of five abnormal changes show a certain relevance with the earthquakes in the Qinghai-Tibetan block. We conclude the results as follows:with the decrease of the distance between the epicenter and the observation well,the amplitude of the water temperature in observation well increases;the bigger the earthquake is,the shorter the time interval between the occurrence of changes and earthquakes is. The results show that,the typical changes in the Yushu well are earthquake precursors,which also have a good monitoring significance of the earthquakes in the Qinghai-Tibetan block.
Key words:  Yushu  Water temperature  Qinghai-Tibetan block  Earthquake