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.
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
关键词
水化学
中期异常
短期异常
地震前兆
预报指标
Hydrochemistry Medium-term anomaly Short-term anomaly Earthquake precursor Prediction indcx Anomaly recognition Differential method
