Scaling Relationship between the Number of Aftershocks and the Size of the Main Shock
Scaling Relationship between the Number of Aftershocks and the Size of the Main Shock
复制标题
余震次数与主震规模之间的比例关系
DOI：
10.4294/jpe1952.38.305
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
K. Shimazaki
中科院分区：
文献类型：
--
作者：
Y. Yamanaka;K. Shimazaki
研究发现日本浅源大地震后一个月内发生的余震对数数量与主震矩的对数成正比。板间地震和板内地震的比例常数不同，但它反映了板间地震和板内地震之间断层区域与地震矩的尺度关系的相似差异。我们提出余震发生率由 n(t)dt=kS10 -bMU1tU1h /(t+c) U1p dt 给出，其中 n(t) 表示主震后 t 天发生的余震次数，S 表示主震断层面积，单位为 km 2 ，M th 为阈值震级，b 为 Gutenberg-Richter 关系的 b 值，c 和 p 为 c 和 p 值。修改后的 Omori 公式的 p 值分别
The logarithmic number of aftershocks which occur within one month after a large shallow earthquake in Japan is found to be proportional to the logarithm of the seismic moment of the main shock. The proportional constants for interplate and intraplate earthquakes are different, but its turns out to reflect a similar difference in scaling relations of the fault area to the seismic moment between interplate and intraplate earthquakes. We propose that a rate of aftershock occurrence is given by n(t)dt=kS10 -bMU1tU1h /(t+c) U1p dt, where n(t) indicates the number of aftershocks which occur t days after the main shock, S indicates the fault area of the main shock in km 2 , M th is the threshold magnitude, b is the b-value of the Gutenberg-Richter relationship, and c and p are the c- and p-values, respectively, of the modified Omori formula