| 中国与美国地震台网数字化体波震级对比分析 |
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| 引用本文： | 翟璐媛,张立文,任克新,杨陈.中国与美国地震台网数字化体波震级对比分析[J].地震地磁观测与研究,2014,35(5):39-46. |
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| 作者姓名： | 翟璐媛 张立文 任克新 杨陈 |
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| 作者单位： | 中国北京100045 中国地震台网中心 |
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| 基金项目： | 中国地震台网中心青年基金 |
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| 摘 要： | 使用中国地震台网全面完成数字化之后的观测资料（2008 2012年）,对中国地震台网和美国地震台网测定的体波震级从震级大小、震中距、震源深度和震中方位进行对比分析.由对比结果可知：中国和美国地震台网测定的mb之间无系统化差异,但中国地震台网测定的mB与美国地震台网测定的mb存在一定系统偏差（mB平均偏大0.22）;震源深度对震级偏差有一定影响,具体表现为浅源地震偏差大于中深源地震;震中距及四象限分布对偏差基本没有影响.
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| 关 键 词： | 震级 体波 中国地震台网和美国地震台网 数字化 对比分析 |
Comparison and analysis between earthquake body wave magnitude determined by CENC and NEIC after digitization |
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| Zhai Luyuan,Zhang Liwen,Ren Kexin,Yang Chen.Comparison and analysis between earthquake body wave magnitude determined by CENC and NEIC after digitization[J].Seismological and Geomagnetic Observation and Research,2014,35(5):39-46. |
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| Authors: | Zhai Luyuan Zhang Liwen Ren Kexin Yang Chen |
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| Institution: | (China Earthquake Networks Center, Beijing 100045, China) |
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| Abstract: | Using the observation data after China Earthquake Networkts digitization （2008--2012）, we contrasted and analyzed body wave magnitude between CENC and NEIC from magnitude size, distance, depth and azimuth. The compare results show that, after digitization, short- period P-wave magnitude mb determined by CENC and NEIC has no systematic difference, but broadband body-wave magnitude mB determined by CENC is quite different from short- period P--wave magnitude mb determined by NEIC （rob determined by CENC is grater by 0.22） ; hypoeenter depth has some influence on magnitude deviation whick is bigger for shallow earthquakes than that for deep earthquakes; whereas distance and azimuth has little in- fluence on magnitude deviation. |
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| Keywords: | earthquake magnitude body wave CENC and NEIC digitization comparison and analysis |
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