摘要
本文对比了1910—1987年发生的长江中下游地震和青藏高原北部地震,发现两者有比较好的对应关系。一般是,青藏高原北部先发生M≥6级地震,而后长江中下游地区发生M≥19/4级地震。对1910年以来的21次地震进行了统计分析,得到复相关系数R=0.74,能够在很高的显著性水平上通过F检验。地震活动在时间、空间、强度上的相关,现代构造运动及应力场等事实表明,长江中下游地震活动可能主要受青藏高原向东的横向推移运动的影响。
In this paper, a comparison between earthquakes along middle and lower reaches of Yangtze R. and on Northern Qinghai-Tibet Plateau during 1910-1987 has been made, and the obtained result shows. a better corresponding correlation. Generally speaking, a M≥6 event occurred on Northern Qinghai-Tibet Plateau first, and then a M = 4 3/4 event followed along middle and lower reaches of Yangtze R. The 21 events since 1910 have been statistically analysed, resulting a complex correlation coefficient R = 0.74 which can pass the F inspection at very high display level. Facts of earthquake correlation in time, space and intensity, neotectonic movement and stress field all indicate that, earthquake activities along middle and lower reaches of Yangtze R. might be affected by the eastward transverse push of Qinghai-Tibet Plateau,
出处
《地震研究》
CSCD
北大核心
1990年第3期246-255,共10页
Journal of Seismological Research
关键词
地震
相关性
构造运动
应力场
Earthquake correlation, Neotectonic movement, Stress field, Middle and lower reaches of Yangtze R., Northern Qinghai-Tibet Plateau
