Study on Mid-Term Anomalies of Radon in Southeast Gansu Province
详细信息
- 责任者：Yang Xingyue (Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China) ; Wang Yan
- 刊名：Journal of Seismological Research
- 出版年：2011
- 卷期：34(1)
- 关键词：水氡异常 ; radon anomaly ; 地震前兆 ; precursor ; 甘肃 ; Gansu Province
- 页码：p.8-18
- 图表：6 illus., 6 tables, 13 refs.
- 分类号：0500
- issnNo：ISSN1000-0666
- isbnNo：CN53-1062/P
摘要
Using the methods of subordinate function, variation rate and trend rate, the authors extract the earthquake precursory anomalies from observational data of Radon in southeastern Gansu Province. The result indicates that 7 items of radon data include 47 subordinate-function anomalies, 45 variation-rate anomalies and 39 trend-rate anomalies from January 1984 to December 2009. Among them, 33 subordinate-function anomalies, 35 variation-rate anomalies and 30 trend-rate anomalies corresponded with the earthquakes MS5-8 that ever hit Gansu Province and the adjacent region within 33 to 585 km. By the analysis of the features of these anomaies and their relation to the earthquakes, the method of time prediction for the moderate-strong and strong earthquake were proposed, and the empirical constant, variation rate and threshold value of trend-rate anomaly are obtained from Radon in southeastern Gansu Province.