北天山重点监视区水化学中短期前兆指标探索  

EXPLORATION OF HYDROCHEMICAL MEDIUM-, SHORT-TERM PRECURSOR INDEXES IN NORTH TIANSHAN FOCAL MONITORING AREA

作　　者：许秋龙[1] 卢静芳[1] 

机构地区：[1]新疆维吾尔自治区地震局

出　　处：《内陆地震》1999年第2期153-161,共9页Inland Earthquake

基　　金：中国地震局"九五"攻关课题!96-913-01-01-13

摘　　要：为了实现中国地震局“九五”重点攻关项目“中短期前兆识别方法、标识体系和评价研究”提出的目标，对北天山重点监视区1980～1997年的水化学观测资料进行了全时域的扫描分析，用差分求和法对资料异常进行了识别．结果表明：美分求和法能有效识别异常和提取地震中短期前兆指标．用该方法检出的异常判定指标信度较高。The recognition method, index system and evaluation research of medium-,short-termprecursor'is a ma jor project of CSB in the ninth five-year plan. In order to attain the goal putforward by it, the 198O ~ l997 hydrochemical observational data of North Tianshan focalmonitoring area are made a scanning analysis in total time domain, and the anomalies con-tained in the data are recognized by using difference accumulation method. The result showsthat difference accumulation method can recognize anomalies effectively and extract medi-um-,short-term precursor indexes, and that the extracted indexes have higher credibility.

关 键 词：水化学 中期异常 短期异常 地震前兆 预报指标 

分 类 号：P315.7[天文地球—地震学]