| 利用小波变换分析朝鲜核爆波形特征 |
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| 引用本文： | 张思萌,刘长生,李继业.利用小波变换分析朝鲜核爆波形特征[J].地震地磁观测与研究,2018,39(6):94-99. |
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| 作者姓名： | 张思萌 刘长生 李继业 |
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| 作者单位： | 中国哈尔滨 150090 黑龙江省地震局 |
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| 摘 要： | 基于小波变换方法，对2009-2017年黑龙江省牡丹江地震台（MDJ）记录的5次朝鲜核爆信号进行Daubechies小波8层多尺度分解，通过对比分析近似和细节部分信息，发现核爆信号进行小波分解后，在不同层存在相同特征，且有别于地震信号分解后在相应各层的特征。可见，利用该方法可有效识别朝鲜核爆。
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| 关 键 词： | 朝鲜核爆 小波分解 波形特征 |
Study on characteristics of nuclear explosion waveform in North Korea by wavelet transform method |
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| Zhang Simeng,Liu Changsheng,Li Jiye.Study on characteristics of nuclear explosion waveform in North Korea by wavelet transform method[J].Seismological and Geomagnetic Observation and Research,2018,39(6):94-99. |
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| Authors: | Zhang Simeng Liu Changsheng Li Jiye |
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| Institution: | Heilongjiang Earthquake Agency, Harbin 150090, China |
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| Abstract: | With wavelet transform, five nuclear explosion signals of North Korea recorded at Mudanjiang Seismic Station (MDJ) in Heilongjiang Province from 2009 to 2017 are decomposed into 8 grades in multiple scale with Daubechies wavelet. Comparing and analyzing the information of approximate part and detail part, we found that the same characteristics exist among the five nuclear explosion signals at various grades of decomposition, which is different from the characteristics of seismic signal at each corresponding grade of decomposition. The method proposed in this paper provides an effective mean for identifying the North Korean nuclear explosion. |
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| Keywords: | nuclear explosion of North Korea wavelet decomposition waveform characteristics |
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