摘要
在本文中作者根据对实际资料的计算,提出将传统的震级-频度关系修改成logN=b_1+b_2M+b_3M^2的形式。用该公式对我国部分地震区带的地震资料进行了计算,结果表明,修改后的震级-频度关系的拟合精度显著提高,其残差比原关系式缩小。用修改后的公式可方便地求得地震区带的震级上限,只要有足够时间长度的观测资料,所求得的震级上限是比较合理的。
In this paper, b values of some seismic zones were calculated by means of modified magnitude-frequency relationship logN=b_1+b_2M+b_3M^2. The results show that modified magnitudefrequency relationship improved likelihood precision remarkablely. The residual of modified magnitude-frequency relationship was reduced 5.5 times maximally as against traditional G-R relationship. Upper magnitude of seismie zone was obtained conveniently. If there are enough time length data, obtained upper magnitude will rather satisfactory.
出处
《西北地震学报》
CSCD
1993年第3期33-37,共5页
Northwestern Seismological Journal
关键词
震级
频度
拟合精度
震级上限
Magnitude-frequency Relationship
Likelihood Precision
Upper Magnitude
