【摘要】 总结和分析了中国地震带划分的研究历史、目的和用途、划分原则、表现形式以及基本特点 ,指出地震带是以地震活动性区域划分研究为目的 ,它不同于概率地震危险性方法中的地震统计区的概念 .文中对地震统计区概念及其演化历史进行了分析和论述 ,认为地震统计区与地震带在统计意义、物理内涵、层次性、划分规模的要求、对空间重叠的排斥性以及划分目的和用途等方面 ,均存在较大差异 .现行工作中将两者不加区分地使用是不合适的 ,一方面造成地震统计区未形成自身的适应概率地震危险性分析方法的划分理论 ,另一方面也造成以地震活动特征和地震孕育发生环境、机制研究为目的的地震带划分研究的停滞不前 .文中最后指出 ,地震统计区划分是以地震带划分研究为基础 ,它产生并服务于考虑地震活动时空不均匀性的概率地震危险性分析方法 ,应将其与地震带概念加以明确区分 ,并加强其划分原则、理论和方法的研究 .更多还原

【Abstract】 This paper makes a summary of status of delimitation of seismic zones and belts of China firstly in aspects of studying history, purpose, usage, delimiting principles, various presenting forms and main specialties. Then the viewpoints are emphasized, making geographical divisions by seismicity is just the most important purpose of delimiting seismic belts and the concept of seismic belt is also quite different from that of seismic statistical zone used in CPSHA method. The concept of seismic statistical zone and its history of evolvement are introduced too. Large differences between these two concepts exist separately in their statistical property, actual meaning, gradation, required scale, property of refusing to overlap each other, aim and usage of delimitation. But in current engineering practice, these two concepts are confused. On the one hand, it causes no fit theory for delimiting seismic statistical zone in PSHA to be set up; on the other hand, researches about delimitation of seismic belts with purposes of seismicity zoning and studying on structural environment, mechanism of earthquake generating also pause to go ahead. Major conclusions are given in the end of this paper, that seismic statistical zone bases on the result of seismic belt delimiting, it only arises in and can be used in the especial PSHA method of China with considering spatially and temporally inhomogeneous seismic activities, and its concept should be clearly differentiated from the concept of seismic belt.更多还原