Modification of Magnitude-Frequency Relation and Magnitude Limit Determination Based on MGR Model for Moderate-Strong Earthquakes in Chinese Mainland
详细信息
- 责任者：Ren Xuemei (Institute of Geophysics ; China Earthquake Administration ; Beijing 100081 ; China) ; Gao Mengtan
- 刊名：Acta Seismologica Sinica
- 出版年：2012
- 卷期：34(3)
- 关键词：震级—频度关系 ; magnitude-frequency relation ; 中国 ; China
- 页码：p.331-338
- 图表：3 illus., 3 tables, 14 refs.
- 分类号：0500
- issnNo：ISSN0253-3782
- isbnNo：CN11-2021/P
摘要
In this paper the method of determining upper magnitude limit following modified Gutenberg-Richter model is derived.Based on two commonly used models the modified magnitude-frequency relations and upper magnitude limits for various regions of Chinese mainland are determined.The result shows that there are nonlinear magnitude-frequency relations for earthquakes in Chinese mainland and the traditional normal G-R model can not reflect nonlinear feature of actual magnitude-frequency relations.While MGR model is suitable for expressing both linear and nonlinear magnitude-frequency relations,and is more suitable for dealing with moderate-strong earthquakes in various regions of Chinese mainland.When the magnitude-frequency relation is nonlinear,the upper magnitude limit determined by using MGR model is more reasonable.