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The Conversion Relationship between the Local Earthquake Magnitude and Surface Wave Magnitude in the Inner Mongolia Digital Seismic Network
LIU Fang, SU Riya, XU Xiquan, LI Hui, NA Re
Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China
摘要:
Using 116 earthquakes over ML3.8 in the Inner Mongolia region from 2008 to 2015, the local earthquake magnitude ML and surface wave magnitude MS are remeasured. Based on norm linear regression (SR1 and SR2) and norm (OR) orthogonal regression method, we established the conversion relationship between ML and MS. The results were tested with Gaussian disturbance. The result shows that the orthogonal regression method (OR) result has the best fitting curve, and the conversion relation is MS=0.96 ML-0.10. The difference between our result and Guo Lücan's (MS=1.13 ML -1.08) may be caused by regional tectonic characteristics. MS Inner Mongolia value is significantly higher than the MS empirical value, with an average difference of 0.23, the difference distribution of empirical relation and the rectified relation is in the range of 0.2-0.3.
关键词:  Local earthquake magnitude ML  Surface wave magnitude MS  Gauss perturbation  Magnitude conversion
DOI:10.19743/j.cnki.0891-4176.201901012
分类号:
基金项目:This project was sponsored by Science for the Earthquake Resilience,China Earthquake Administration (XH18012),and the Major Science and Technology Projects "Application Demonstration Research of Key Engineering Monitoring System Based on Microseismic Location Technology",Inner Mongolia Autonomous Region.
The Conversion Relationship between the Local Earthquake Magnitude and Surface Wave Magnitude in the Inner Mongolia Digital Seismic Network
LIU Fang, SU Riya, XU Xiquan, LI Hui, NA Re
Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China
Abstract:
Using 116 earthquakes over ML3.8 in the Inner Mongolia region from 2008 to 2015, the local earthquake magnitude ML and surface wave magnitude MS are remeasured. Based on norm linear regression (SR1 and SR2) and norm (OR) orthogonal regression method, we established the conversion relationship between ML and MS. The results were tested with Gaussian disturbance. The result shows that the orthogonal regression method (OR) result has the best fitting curve, and the conversion relation is MS=0.96 ML-0.10. The difference between our result and Guo Lücan's (MS=1.13 ML -1.08) may be caused by regional tectonic characteristics. MS Inner Mongolia value is significantly higher than the MS empirical value, with an average difference of 0.23, the difference distribution of empirical relation and the rectified relation is in the range of 0.2-0.3.
Key words:  Local earthquake magnitude ML  Surface wave magnitude MS  Gauss perturbation  Magnitude conversion