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引言大地震具有明显的填空性,地震活动空区是大地震孕震过程中应力集中的一种表现形式,它反映了孕震区长期应力、应变的发展变化。费道托夫(1965)和艾伦(1965)在研究了太平洋板块边缘地震带的地震时空图像后,分别提出了地震活动空区的概念。此后,许多地震学者也对地震活动空区进行了广泛的研究,世界上许多国家根据地震活动空区对一些地震危险区作了长期预报。作为大地震的中、长期预报的重要指标之一,地震活动空区的物理机制是什么?怎
INTRODUCTION Large earthquakes have obvious fill-in-blank. The seismic active space is a form of stress concentration in the process of earthquakes during large earthquakes. It reflects the development and changes of long-term stress and strain in the seismogenic area. After studying the temporal and spatial images of the seismogenic belt in the marginal zone of the Pacific Plateau, Ferdovtov (1965) and Allen (1965) proposed the concept of a seismic active void. Since then, many seismologists have also carried out extensive research on seismic active areas. Many countries in the world have made long-term forecasts of some earthquake-hazardous areas based on the seismic active areas. As one of the important indicators of medium and long-term prediction of large earthquakes, what is the physical mechanism of the seismic active space?