| 山西地区中强地震数字记录特征分析 |
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| 引用本文： | 靳玉贞,林木金,孟彩菊,赵春华,吴昊昱,杨世英.山西地区中强地震数字记录特征分析[J].地震地磁观测与研究,2013(5):91-97. |
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| 作者姓名： | 靳玉贞 林木金 孟彩菊 赵春华 吴昊昱 杨世英 |
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| 作者单位： | [1]太原基准地震台,中国山西030025 [2]太原大陆裂谷动力学国家野外科学观测研究站,中国山西030025 [3]东山地震台,中国福建363400 |
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| 基金项目： | 山西省地震局科研项目（SBK-1105） |
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| 摘 要： | 对山西地区4次Ms≥4.0地震震中距20-80 km的近台PG、SG波列进行频谱分析,结果显示,不同震相的频谱特征存在较大差异,优势频段不一.并对山西大同Ms4.6、阳曲Ms4.6地震波列进行小波多分辨分解,结果显示,PG、SG波均表现为多组波列,且差异较大,可能与两次地震的破裂机制、所处构造部位不同有关.
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| 关 键 词： | 地震波形 频谱 小波多分辨分析 |
Characteristics and analysis of digital records of mid-strong earthquake in Shanxi seismic belt |
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| Jin Yuzhen,Lin Mujin,Meng Caiju,Zhao Chunhua,Wu Haoyu,Yang Shiying.Characteristics and analysis of digital records of mid-strong earthquake in Shanxi seismic belt[J].Seismological and Geomagnetic Observation and Research,2013(5):91-97. |
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| Authors: | Jin Yuzhen Lin Mujin Meng Caiju Zhao Chunhua Wu Haoyu Yang Shiying |
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| Institution: | 1.Taiyuan Seismic Station, Shanxi Province 030025, China;National Continental Rift Valley Dynamics Observatory of Taiyuan, Shanxi Province 030025, China; 2.Dongshan Seismic Station, Fujian Province 363400, China;) |
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| Abstract: | In this article,frequency spectrum analysis based on the Shanxi area 4 Ms≥4.0 earthquakes in epicentral distance 20-80 km near PG,SG wave is distribed.The results show that the spectral characteristics of the different phases are quite different.The dominant band is not same.The waveform data ofthe Shanxi Datong Ms4.6,earthquake and Yangqu Ms 4.6 earthquake are also analyzed with wavelet multiresolution decomposition.The results showed that PG,SG wave showed multiple wave trains,and the difference is large.It may be relate to the rupture mechanism and the located in different structure parts on two earthquakes. |
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| Keywords: | earthquake waveform spectrum wavelet multi-resolution analysis |
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