全球强震与地球自转角加速度变化过程关系统计研究

Abstract

Abstract: In this paper, the statistical relationship between the global strong earthquakes and the Earth’s rotation acceleration variation processes from 1962 to 2017 has been investigated. The results show that the probability of global earthquakes over magnitude 8 occurring during the decline of the Earth rotation acceleration is 12% higher than the natural probability to 64%, statistically significant, but the statistics of M7.5 and M7.8 earthquakes are not significant. The statistical results of partitioning show that the global strong earthquakes have obvious regional characteristics: in the rising period of the Earth’s rotation acceleration, earthquakes, whose probability are higher than the natural probability, are mainly distributed in west of Alpine zone, Ryukyu Philippines region and the eastern region of China along The Pacific seismic belt, while occurred in the middle section of the circum-Pacific seismic belt (Himalaya arc), Alpine zone (Indonesia island arc trench) and East Asia mainland during the decline period. The analysis proves that there was a strong correlation between the Earth's rotation acceleration variation processes and the global regional seismicity, which may be related to the interaction between the plates caused by the Earth’s rotation acceleration variation.

Key words: Global strong earthquakes, Earth’s rotation angular acceleration, Seismic belt

CLC Number:

P315.7

TIAN Tao, FENG Zhi-sheng, ZHU Tao, LI Hong-yu, WANG Wei, YE Bi-wen. A Statistical Study of the Relationship between Global Strong Earthquakes and the Earth's Rotation Angular Acceleration Variation[J]. EARTHQUAKE, 2018, 38(2): 137-144.

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A Statistical Study of the Relationship between Global Strong Earthquakes and the Earth's Rotation Angular Acceleration Variation

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