Citation: | XU Dao-yi, SUN Wen-peng. APPLICATION OF THE ETA-TYPE TECTONIC SERIES SUGGESTED BY LI SI-GUANG TO EARTHQUAKE PREDICTION[J]. Journal of Geomechanics, 2011, 17(1): 64-73. |
The eta-type tectonic system was suggested by academician Li Si-guan more than 70 years ago, and two great eta-type tectonic systems have been described by him: one is located in Qinhai-Xizang (Tibet) -Yunan-Burma-Indonesia (QXYBI), and the another is Western part of North America (WNA). Recently they have been applied to the earthquake prediction successfully. In this paper a brief introduction is concerned to the prediction of MS 8.3 Wenchuan Earthquake occurred on May 12th, 2008 by Huang Xiang-ning based on the QXYBI eta-type tectonic system, and also to the prediction of MS7.5 Mexico earthquake occurred on April 5th, 2010 by author according to the WNA eta-type tectonic system. The time intervals (about 53 ~ 54 years) among super-great earthquakes occurred in the same eta-type tectonic system demonstrate clear orderliness related to 3 times of astronomical Saros Period. Thus, it is clear that the modern seismic activity of eta-type tectonic systems is stimulated by the astronomical factors, and this character is favorable for the prediction of great earthquake in future.
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The main eta-type tectonic systems all over the world[6]
Map showing locations of possible earthquakes, floods and droughts in China in 2007
Sketch map of the eta-type tectonic system located in west coast of North America [10]