攀枝花和姚安地震前云南省数字化前兆资料的异常分析

英文篇名：Anomaly changes of observation data from Digitalized Seismic Stations in Yunnan Province before Panzhihua and Yaoan Earthquakes
中文刊名：四川地震
英文刊名：Earthquake Research in Sichuan
作者：李丽清
英文作者：LI Li-qing(Earthquake Administration of Lijiang Municipality ; Yunnan Lijiang 674100 ; China)
中文关键词：数字化前兆资料 ; 前兆异常 ; 异常分析
英文关键词：digitalized precursor observation data ; short-impending prediction ; precursor analysis
出版日期：2010-06-15
机构：丽江市地震局;
年：2010
期：02
出版单位：四川地震

摘要

2008年8月30日四川攀枝花发生6.1级地震,2009年7月9日姚安发生6.0级地震。笔者统计了震前距震中210 km范围内云南省的"九五"及"十五"数字化前兆资料,发现部分资料在两次地震前有很好的短临异常显示。数字化仪器是"九五"和"十五"期间逐步安装应用的,数字化仪器与模拟仪器相比,数据量大,数据精确度高,能提取更多、更丰富的来自地下的信息。因此,数字化仪器最终将取代模拟仪器。加强对数字化前兆资料的分析研究、探索及应用,是一项新的研究课题,也是提高地震预报成功率的有效途径。
An M6.1 Earthquake struck Panzhihua City,Sichuan Province,on 30 August 2008 and another earthquake struck Yaoan near Panzhihua City,Yunnan Province,on 9 July 2009.After earthquakes we collect precursor data,which are observation of digitalized instruments of projects of the 9th and 10th Five-year Plan,measured seismic stations with a radius of 210 kilometers.We find that before these two earthquakes some of precursory changes of the observation data are presented clearly.The observation data of digitalized instruments is more precise and more sampling times and so it is better than that of analog instruments.Through the analysis of two kinds of data,we think that the digitalized data can improve the work of earthquake prediction.

引文