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DOI	10.3969/j.issn.0001-5733.2011.09.008
	The 18.6-year periodicity of great earthquakes
	Du Pin-Ren; Zhao Jun-Meng; Gao Xiang-Lin
通讯作者	Du, PR (通讯作者)
发表日期	2011
ISSN	0001-5733
起始页码	2256
结束页码	2262
卷号	54 期号:9
英文摘要	Dividing the world into 15 study areas and using the earthquake catalogue of 0 during 1900 similar to 2009, we make a statistical analysis of the relationship between seismicity of each area and the period of lunar nodal motion. The result shows that among the 15 areas, 10 areas exhibit an 18.6-year cycle of great earthquakes in statistical sense, which consists of a 12.4-year active section and a 6.2-year quiet section. In the eastern, northern, southern and western areas of the Circum-Pacific seismic belt, such a periodicity is present and their active sections have certain regularity. In terms of seismic events during the sixth cycle (1991 similar to 2009), this study has tested the stability and applicability of the 18.6-year periodicity derived from earlier five cycles (1900 similar to 1990). It is found that most of periodicities are stable in the regions with such characters. The possible mechanisms of the 18.6-year periodicity are as follows: (1) Earthquakes are modulated by the 18.6-year tide via day and half-day tides. (2) Effect of fluid tide in upper mantle (tide within the Earth). And (3) earthquakes are dictated by 18.6-year tide through variation of Earth rotation.
关键词	SOUTHERN-CALIFORNIA SOLAR PERIODICITIES NORTH-AMERICA LUNAR TIDE TEMPERATURE DROUGHT
英文关键词	Lunar nodal motion; Plate; Active section of earthquakes; chi(2) test; Earth rotation
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000295500000008
来源期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257869
推荐引用方式 GB/T 7714	Du Pin-Ren,Zhao Jun-Meng,Gao Xiang-Lin. The 18.6-year periodicity of great earthquakes[J]. 中国科学院青藏高原研究所,2011,54(9).
APA	Du Pin-Ren,Zhao Jun-Meng,&Gao Xiang-Lin.(2011).The 18.6-year periodicity of great earthquakes.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(9).
MLA	Du Pin-Ren,et al."The 18.6-year periodicity of great earthquakes".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.9(2011).