Discussion on Relationship of Water Radon (Flow) and Medium Earthquakes in Gansu
详细信息
- 责任者：Zhang Yu (Earthquake Administration of Gansu Province ; Lanzhou 730000 ; China) ; Liu Xiaofeng
- 刊名：South China Journal of Seismology
- 出版年：2011
- 卷期：31(1)
- 关键词：震灾 ; seismic hazard
- 页码：p.10-17
- 图表：3 illus., 2 tables, 10 refs.
- 分类号：1800
- issnNo：ISSN1001-8662
- isbnNo：CN44-1266/P
摘要
Medium earthquake often occurrs in Gansu Province and its adjacent areas, the precursory anomalies can sensitively reflect the strong earthquakes in the northern Tibetan Plateau.This paper analyzed the change of data in the water radon points in Gansu Province before medium earthquakes, and found obvious medium-short term anomalies or short-impending anomalies appearing before some earthquakes in most points. The earthquake-reflecting effect of gas radon is best in Jiayuguan and the anomalous shape mainly is broken annual variation. Precursory anomalies of water radon in Wushan No.1 spring and Tianshui Huaniu are mostly broken annual variation or low value anomaly, precursory anomaly of Qingshui flow is high value anomaly. The main anomaly appearing before some big earthquakes is trend anomaly of synchronized change.