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前言 据以往资料统计,约四分之一的强震之前有前震。前震是直接来自孕震区域的特别宝贵的信息。对地震的确定性预报有着重要的意义,因此研究前震序列的特征,探索它的发生机理都是很有价值的。 虽然萩原尊礼早就对北伊豆地震(1930年)和新岛地震(1936年)的前震活动作过
According to previous statistics, about a quarter before the strong earthquake before the earthquake. Foreshocks are particularly valuable information that comes directly from the seismogenic zone. Therefore, it is of great value to study the characteristics of foreshock sequence and explore its mechanism of occurrence. Although Ebara’s reverence has long been a pre-earthquake activity on the North Izu earthquake (1930) and the Shinjuku earthquake (1936)