摘要
定义了地震活动模糊熵概念，计算了唐山地震前地震活动模糊熵随时间、空间的变化，发现唐山Ms7.8地震发生前，地震活动模糊墙值下降，唐山Ms7.8地震发生在地震活动模糊摘值较低的地方。这符合大地震前震源区地震活动性从无序趋向有序的规律。地震活动模糊熵把模糊因子与震群活动熵统一起来，比震群活动熵能更突出地反映地震活动异常。
Seismicity fuzzy entropy H is defined in this paper. That seismicity fuzzy entropy values change with time, with space before Tangshan earthquake is computed in this paper. It is discovered that seis micity fuzzy entropy values fell down be fore Tangshan earthquake,and Tangshan earthquake occurred at the area of low seismicity fuzzy entropy value. This result fits well with the law that seismicity in earthquake source area changes from disorder to order before large earthquake. Seismicity fuzzy entropy unifys the fuzzy factor and the seismicity entropy as one, it can reflect seismicity anomaly better than seismicity entropy itself.
出处
《华北地震科学》
1997年第3期73-77,共5页
North China Earthquake Sciences
关键词
地震
模糊识别
信息熵
地震前兆
Seismicity fuzzy entropy
earthquake source area
Tangshan earthquake
