The Conversion Relationship between the Local Earthquake Magnitude and Surface Wave Magnitude in the Inner Mongolia Digital Seismic Network |
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| Authors: | LIU Fang SU Riy XU Xiquan LI Hui and NA Re |
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| Institution: | Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China,Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China and Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 050051, China |
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| 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. |
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| Keywords: | Local earthquake magnitude ML Surface wave magnitude MS Gauss perturbation Magnitude conversion |
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