摘要
本文利用震群信息熵概念,通过对山东及沿海地区16次震群的分析、研究,初步探讨了震群信息熵在该区地震中期预报中的应用及未来地震的危险性。同时,应用震群综合指标对1976年春在长岛发生的两次震群进行了分析研究。结果表明:1976年春在长岛附近发生的黑山、砣矶震群均为前兆震群。两个前兆震群所对应的大震是相隔4、5个月之后的1976年7月28日河北唐山7.8级地震。
Using the conception of swarm information entropy, we research sixteen ear-thquake swarms and approach earthquake hazard in Shandong Province a and sur-roundings and application of swarm information entropy medium range forecast.Making use of earthquake swarm comprehensive indexes, we study the two swar-ms on the Changdao, which occurred in spring, 1976. The results show that Hei-Shah and Tuoji earthquake swarms, which occurred on the Changdao area in thespring, 1976, are precursory swarms. Corresponding large earthquake of two pre-cursory swarms is Tangshan earthquake with M=7. 8, which occurred on July 28,1976.
出处
《地震地磁观测与研究》
1992年第4期1-8,共8页
Seismological and Geomagnetic Observation and Research
关键词
震群信息熵
前兆震群
地震群
预报
Swarm information entropy
Precursory swarm
Characteristic index
Probability assess
