| 基于Lg波识别判据的特性分析 |
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| 引用本文： | 何永锋,赵克常,姚国正,张献兵,马裕然.基于Lg波识别判据的特性分析[J].地震学报,2011,33(6):715-722. |
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| 作者姓名： | 何永锋 赵克常 姚国正 张献兵 马裕然 |
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| 作者单位： | 1）中国北京100072装甲兵工程学院基础部2）中国北京100871北京大学地球与空间科学学院 |
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| 基金项目： | 国家自然科学基金项目(40874023)资助 |
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| 摘 要： | Lg波是检测、识别地下核爆炸的重要震相.通常情况下,地下核爆炸的低频段Lg波能量相对较强,基于Lg波的识别判据在高频段表现较好.然而在低频范围内却表现出难以用球对称爆炸源模式解释的现象,如Lg/Pg判据在1 Hz附近失效等现象.本文利用理论地震图方法,分析了伴随层裂过程产生的重要辅助源——CLVD源对Lg波低频成分的调...
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| 关 键 词： | 地下核爆炸 Lg波 识别判据 CLVD源 |
Analysis on discriminants based on Lg wave |
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| He Yongfeng,Zhao Kechang,Yao Guozheng,Zhang Xianbing,Ma Yuran.Analysis on discriminants based on Lg wave[J].Acta Seismologica Sinica,2011,33(6):715-722. |
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| Authors: | He Yongfeng Zhao Kechang Yao Guozheng Zhang Xianbing Ma Yuran |
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| Affiliation: | 1) Academy of Armored Forces Engineering, Beijing 100072, China2) School of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| Abstract: | Lg wave characteristic is widely used to discriminate underground nuclear explosions from earthquakes.In contrast,the high-frequency Lg/Pg discriminant appears to perform very well,but fails around 1 Hz.This phenomenon can not be explained by pure explosion source model,but the CLVD source appears to take a key role to explain it.In this paper,the effect of CLVD source on the performance of the discriminants based on Lg wave is studied by means of theoretical seismogram analysis.Considering the spall as an ... |
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| Keywords: | underground nuclear explosion Lg wave discriminant CLVD |
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