地震活动显著增强指标算法研究

根据华北地区1970年以来地震目录和历史地震文献资料,对地震活动显著增强异常指标进行归纳、总结和实验,对照《中国震例(1966-2012)》中中国东部地区发生的1975年2月4日辽宁海城7.4级、1976年7月28日河北唐山7.8级等典型地震进行震例回溯检验,明确该项指标的计算规则,设计计算机自动化程序,在短时间内对指定区域进行地震活动显著增强异常指标的扫描计算,为开展测震学异常判定及预测指标提取等工作提供参考依据。

Research on enhancement algorithm of seismic activity

Based on the study of the earthquake catalogue and historical documents in north China since 1970, this paper inductions, summarizes, and tests the anomaly index of significant enhancement of seismic frequency. Selecting typical earthquakes in the eastern region from China Earthquake Case (1966-2012), such as Tangshan M 7.8 earthquake in Hebei Province on July 28, 1976, and Haicheng M 7.4 earthquake in Liaoning Province on February 4, 1975, the retrospective test of the earthquake case is carried out, and the explicit calculation rules of the index are summarized. We have designed a specific computer program, which can automatically scan and calculate the seismic significant enhancement anomaly index in a short time according to the parameters of the designated area and magnitude. This study can provide a reference for seismic prediction analysts to determine seismological anomalies and extract prediction indicators.