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一、怎样评定城市地震危险性地震的危险性当然是根据地震本身的强度、性质而定,不言而喻,也是根据城市遭受灾害的情况而定。若把左右城市危险性的主要原因和日本各城市的危险性进行分类,将会怎样呢?日本《预防时报》杂志登载了神户大学三东哲夫题为:《造成城市危险的因素是什么?》的论文其论点如下:要评定城市震灾危险程度并非容易之事。因为各种各样的因素纠缠在一起。但是,起码有三点可以作为重要因素:①根据过去在城市周围发生的地震,看该城市是以多大的频率承受烈度五度以上的地震震动的;②活动频繁的
First, how to assess the risk of urban earthquake Earthquake risk of course, is based on the strength of the earthquake itself, nature, it goes without saying, but also according to the disaster situation in the city. What will happen if we classify the main causes of the danger around the city and the dangers of cities in Japan? Japan’s “Prevention Times” magazine published Kobe University Toshodo Tetsuo entitled: “What causes the urban danger?” The thesis is as follows: To assess the degree of urban earthquake hazard is not easy. Because of a variety of factors tangled together. However, there are at least three important factors that can be used as follows: ① According to the earthquakes that have taken place around the city in the past, how often the city is subjected to earthquakes with an intensity of five degrees or more; ② frequent activities