| A circum-earth shear zone at low-latitudes and episodic large earthquakes in it and the circum-Pacific seismic zone |
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| 作者姓名： | MA Zongjin DU Pinren REN Jinwei & GAO Xianglin . Institute of Geology China Earthquake Administration Beijing China . Institute of Earthquake Science China Earthquake Administration Beijing China |
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| 作者单位： | MA Zongjin1，DU Pinren1，REN Jinwei2 & GAO Xianglin1 1. Institute of Geology，China Earthquake Administration，Beijing 100029，China; 2. Institute of Earthquake Science，China Earthquake Administration，Beijing 100036，China |
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| 摘 要： | Although the temporal and spatial distribution of earthquakes looks like non-uniform, it is not com- pletely random. Locations of seismic zones are associ- ated with active tectonics. On a global or regional scale, several major or great earthquakes occur…
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| 收稿时间： | 5 April 2005 |
| 修稿时间： | 23 November 2005 |
A circum-earth shear zone at low-latitudes and episodic large earthquakes in it and the circum-Pacific seismic zone |
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| MA Zongjin,DU Pinren,REN Jinwei & GAO Xianglin . Institute of Geology,China Earthquake Administration,Beijing ,China, . Institute of Earthquake Science,China Earthquake Administration,Beijing ,China.A circum-earth shear zone at low-latitudes and episodic large earthquakes in it and the circum-Pacific seismic zone[J].Science in China(Earth Sciences),2006,49(9):897-903. |
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| Authors: | MA Zongjin DU Pinren REN Jinwei GAO Xianglin |
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| Institution: | 1. Institute of Geology, China Earthquake Administration, Beijing 100029, China
2. Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China |
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| Abstract: | Because of the differential motions between the Northern and Southern Hemispheres of the Earth, there exists a motion discordant
zone between them. On the surface this zone consists of 13 large faults dominant with strike-slip. We call it a global shear
zone at low-latitudes (E system). By statistical analysis of temporal distribution of earthquakes M
w ⩾ 7.5 in the E system and the circum-Pacific (P system) during 1900–2003, we find that there exist quasi-episodic and alternative
activities in and between these two systems. This phenomenon is likely associated with the half-sphere oscillation in dilation
and contraction and the change of the Earth’s rotation rate. |
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| Keywords: | shear zone circum-Pacific zone great earthquake quasi-episode |
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