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《Journal of Seismological Research》 2010-03
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Analysis of Pre-and Post-earthquake Water-radon Anomaly

ZHANG Yu,LIU Xiao-feng,CHANG Qian-jun,CHEN Yao,LIU Bao-qin(Earthquake Administration of Gansu Province,Lanzhou 730000,Gansu,China)  
The data of water radon from several seismic stations in Qinghai,Gansu and northern Sichuan is analyzed before MS7.0 Gonghe,Qinghai earthquake,MS6.6 Xinghai,Qinghai earthquake,west Kunlun Mountains MS8.0 earthquake and MS8.0 Wenchuan,Sichuan earthquake.The synchronous and quasi-synchronous anomalies of water radon appeared early in the seismogenic process of these earthquakes.The nearer the stations are to the Gonghe earthquake,the higher the ratio of the trend anomaly is,and the earlier the anomaly appears.For the MS8.0 Kunlun Mountains earthquake,most of the anomalous points are distant and the anomalies last very long.The anomalous points migrate from the Northwest to the Southeast.For Xinghai earthquake,a few anomalies appear before the earthquake.For Wenchuan earthquake,the anomalies have a good synchrony and most of the anomalies have a good co-seismic effect.For all the earthquakes,the time the anomalies disappear is not definite;some of the anomalies disappear before the earthquake,some of the anomalies disappear after the earthquake.
【Fund】: 中国地震局震情跟踪合同制定向工作任务(2009010103);; 甘肃地震重点危险区震情深入跟踪项目(2010010105)联合资助
【CateGory Index】: P315.723
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