节点文献
2013年甘肃岷县漳县M_S6.6地震前甘东南地区前兆异常分析
Analysis on the Some Typical Precursory Anomalies before Minxian-Zhangxian M_S6.6 Earthquake in Southeast Area of Gansu Province in 2013
【摘要】 通过分析甘东南地区的前兆资料,认为2013年7月22日岷县漳县MS6.6地震前震中距300 km内甘肃部分前兆资料有明显的中短期异常及典型的短临异常。用从属函数法定量提取了水氡和水位资料中短期异常,分析了异常特征,并对岷县漳县MS6.6地震前水氡、水位、水温、地电阻率及形变资料的异常特征进行了重点分析,发现地震前甘东南地区的几项地形变资料出现了明显的中短期异常,部分水氡、水位、水温和地电阻率资料存在明显的短临异常。
【Abstract】 By analyzing the precursory data in the southeast area of Gansu Province before M inxian- Zhangxian MS6. 6earthquake on Jul. 22,2013,we found that there appeared the obvious mid-short anomalies and typical short impending anomalies in the precursory data in the area of 300 km from the epicenter. Then we quantitatively extracted the mid-short term anomalies of water radon and water level by subordinate function method,and took a brief analysis of anomalies characteristics of it. Then we focused on analyzing the anomalies characteristics of water radon,water level,water temperature,geoelctrical resistivity and deformation data before M inxian-Zhangxian MS6. 6 earthquake,and obtained that there exited obvious mid-short impending anomalies in several ground deformation data,and the obvious short impending anomalies in some data of water radon,water level,water temperature,geoelctrical resistivity in the southeast area of Gansu Province.
【Key words】 Minxian-Zhangxian MS6.6 earthquake; precursory anomaly; underground fluid; geoelctrical resistivity; ground deformation; southeast area of Gansu Province;
- 【文献出处】 地震研究 ,Journal of Seismological Research , 编辑部邮箱 ,2015年03期
- 【分类号】P315.72
- 【被引频次】17
- 【下载频次】133