| 地下核爆炸地震波二次源特征 |
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| 引用本文： | 何永锋,赵克常,张献兵,马裕然,王洋.地下核爆炸地震波二次源特征[J].地球物理学报,2012,55(5):1742-1748. |
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| 作者姓名： | 何永锋 赵克常 张献兵 马裕然 王洋 |
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| 作者单位： | 1. 装甲兵工程学院基础部, 北京 100072;
2. 北京大学地球与空间科学学院, 北京 100871 |
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| 摘 要： | 层裂是地下核爆炸震源物理过程中最重要的非球对称源过程.对其机制的研究,多基于面波资料,本文基于远场体波资料,利用经验格林函数方法,消除路径及接收场地效应,利用地下核爆炸远场地震波P波数据对震源时间函数进行了反演,结果显示明显的双脉冲特征,该二次源特征不随方位角及震中距变化,说明它源自震源本身,其双脉冲特征与层裂机制相符.
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| 关 键 词： | 地下核爆炸 层裂 经验格林函数 |
| 收稿时间： | 2011-04-26 |
The characteristic of the waveform from the second source induced by underground explosion |
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| HE Yong-Feng
,
ZHAO Ke-Chang
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ZHANG Xian-Bing
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MA Yu-Ran
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WANG Yang.The characteristic of the waveform from the second source induced by underground explosion[J].Chinese Journal of Geophysics,2012,55(5):1742-1748. |
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| Authors: | HE Yong-Feng ZHAO Ke-Chang ZHANG Xian-Bing MA Yu-Ran WANG Yang |
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| Institution: | 1. Academy of Armored Forces Engineering, Beijing 100072, China;
2. School of Earth and Space Science, Peking University, Beijing 100871, China |
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| Abstract: | It was widely accepted that the spall slapdown is the primary contributor to the non-spherical source of underground explosions based on the study of surface waves.In this article,body waves are analyzed to search the mechanism of the non-spherical process of the underground nuclear explosion.The second arrival after the P arrival is obvious and the shape of the two pulses is remarkably consistent in a wide azimuthal range.This indicates that the second arrival is not due to any structural features but is part of the source itself,and can be explained by the spall process. |
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| Keywords: | Underground nuclear explosion Spall Empirical Green′s function |
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