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Use Seismic Moment Tensor and GPS Data to Analyse the Recent Crustal Movement Energy Distribution Characteristics of

JING Yan, LI Hong,XIONG Yu-zhen, FAN Liang-long, ZHANG Shi-zhong, SUN Qi-wei, DONG Jian-ye, LIU Feng-qiu, WANG Hai-zhong   

  1. Institute of Crustal Dynamics, CEA , Beijing 100085, China
  • Received:2009-03-20 Revised:2009-03-20 Online:2009-03-20 Published:2009-03-20

Abstract: For a relatively unified and integrated system, the acumulated energy and released energy are basically equal in a cycle of earthquake activity. The crustal deformation fields inferred from earthquake data represent the results of strain energy that had been released. On the other hand, the deformation fields inferred from GPS data represent the strain energy summation of accumulated energy and released energy. According to the geotectonic and active blocks distribution characteristics in China continent and its neighborhood, 32 subregions are subdivided. On this basis, two groups of unit volume energy accumulated rate are calculated and compared with each other in this paper. It can be concluded that crustal strain energy of most areas in our research are released ultimately. Only in the North Tibet, Sichan-Yunnan, Kunlun and Altyn areas, the probability of strong earthquakes is greater. More attention should be paid to these areas.