云南龙陵邦腊掌温泉水氡映震特征分析  

Analysis of Characteristics of Radon Content Variation Caused by Earthquake in a Banglazhang Hot-spring of Longling,Yunnan

作　　者：张立[1] 吴国华[1] 李宗兴[1] 

机构地区：[1]云南省地震局,云南昆明650224

出　　处：《四川地震》2016年第3期6-14,共9页Earthquake Research in Sichuan

基　　金：云南省"十项"重点工程"云南大震短临跟踪专项研究";云南省地震局"云南强震临震预警技术专项";云南省地震局2015年度震情跟踪专项任务资助

摘　　要：对龙陵邦腊掌温泉测点自1976年观测以来,在100 km范围内发生的Ms≥5级地震和300 km范围内发生的Ms≥6级地震前的温泉水氡含量变化进行了分析,总结其映震特征。研究结果表明,邦腊掌温泉水氡含量变化对发生在龙陵—瑞丽断裂和大盈江断裂及其附近Ms≥5级地震映震效果较好,震前观测到的水氡含量变化具有共性特征。发生在龙陵—瑞丽断裂及其附近Ms≥5级地震前异常表现为水氡含量下降、流量增大、水温升高,且以短期异常为主。2008年以来发生在大盈江断裂及其附近Ms≥5级地震前异常表现为水氡含量上升,流量和水温在均值附近波动。水氡长趋势低值异常出现时则指示周边有Ms≥6级强震发生,强震主要分布于缅甸、孟连—中缅交界、思茅—普洱、永胜—楚雄一带。In this paper, it is analyzed that radon variation is caused by the Ms≥5 events occurred within 100 km range of the Banglazhang hot-spring of Longling since 1976. The results show that the radon, temperature and flow variation of the Banglazhang hot-spring reflect the seismogenic process of the Ms≥5 events occurred in the area a- long the Longling-Ruili fault zone. Variation anomalies of radon content, temperature and flow have been observed before a number of earthquakes. They have common characteristics that are the radon-value decreasing, water-flow and water temperature increasing. They are short-term anomalies. The radon, temperature and flow variation also reflects the seismogenic process of the Ms ≥5 events that have occurred in the area along the Dayingjiang fault zone since 2008. The characteristics of anomalies are the radon-value increases, temperature rises, and change of flow in the mean. The trend anomalies of lower radon-value may indicate that the Ms≥6 earthquakes might occur in the surrounding area. They are mainly in areas of Myanmar, Menglian area of China and Myanmar, Simao-Puer, Yong- sheng-Chuxiong.

关 键 词：云南 龙陵邦腊掌温泉 水氡 映震特征 

分 类 号：P315.723[天文地球—地震学]