| 鹤岗地震台面波震级偏差分析 |
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| 引用本文： | 李大伟,张浩,姜博.鹤岗地震台面波震级偏差分析[J].地震地磁观测与研究,2021,42(3):34-38. |
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| 作者姓名： | 李大伟 张浩 姜博 |
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| 作者单位： | 中国黑龙江154100 鹤岗地震台 |
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| 基金项目： | 黑龙江省地震局一般课题（项目编号：202004） |
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| 摘 要： | 在地震震级国家标准《地震震级的规定》(GB17740—2017)发布以后,收集整理鹤岗地震台2018年1月—2020年3月测定的远震面波震级M_(S(HEG)),与中国地震台网中心地震目录中给定的面波震级M_(S(CENC))进行比较,统计二者偏差值。利用统计学方法,分析震级偏差与震级、震中距和反方位角的关系。结果表明:与中国地震台网中心地震目录发布震级相比,鹤岗地震台测定的面波震级偏高,且震级偏差与震中距表现为正相关性;震中位于鹤岗地震台站西北方位,震级偏差较小,而在其他方位,震级偏差则较大。
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| 关 键 词： | 面波震级 震级偏差 震中距 反方位角 |
Analysis of surface wave magnitude deviation at Hegang Seismic Station |
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| LI Dawei,ZHANG Hao,JIANG Bo.Analysis of surface wave magnitude deviation at Hegang Seismic Station[J].Seismological and Geomagnetic Observation and Research,2021,42(3):34-38. |
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| Authors: | LI Dawei ZHANG Hao JIANG Bo |
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| Institution: | Hegang Seismic Station, Heilongjiang Province 154100, China |
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| Abstract: | After the publishing of the latest national standard for earthquake magnitude "General rule for earthquake magnitude" (GB17740—2017), the surface wave magnitudes for teleseismics measured by Hegang Seismic Station (HEG) from January 2018 to March 2020 is summarized and compared with the magnitudes published by China Earthquake Networks Center (CENC). The surface wave magnitude deviations between results from HEG and CENC were calculated. By the statistical method, the relationship between magnitude deviation and magnitude value, epicentral distance, and back azimuth was analyzed. The results show that the surface wave magnitude measured by Hegang Seismic Station is higher than that published by China Earthquake Networks Center, and the magnitude deviation is positively correlated with the epicentral distance. Magnitude deviation is smaller for earthquakes to the northwest of Hegang Seismic Station and larger for others. |
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| Keywords: | surface wave magnitude magnitude deviation epicentral distance back azimuth |
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