地下爆炸Lg波地震矩与源地震矩关系数值模拟

doi:10.3799/dqkx.2025.300

地下爆炸Lg波地震矩与源地震矩关系数值模拟

doi: 10.3799/dqkx.2025.300

1 禁核试北京国家数据中心和北京放射性核素实验室, 北京 100085
2 西北核技术研究所, 西安 710024

详细信息

作者简介:
王旭亮，助理研究员，主要从事禁核试核查地震监测方面研究。e-mail: wang.xuliang@ndc.org.cn.ORCID:0009-0005-0153-9002

通讯作者:
靳平,研究员,主要从事禁核试核查地震监测方面研究。e-mail:jinping@nint.ac.cn

中图分类号: P315
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出版历程
- 收稿日期: 2025-09-06
- 网络出版日期: 2026-01-05

Numerical Simulation on the Relationship between Seismic Moment of Lg Wave and Source of Underground Explosion

1. CTBT Beijing National Data Center and Beijing Radionuclide Laboratory, Beijing 100085, China
2. Northwest Institute of Nuclear Technology, Xi'an 710024, China

摘要

摘要: 针对地下爆炸当量估算问题，基于理论地震图仿真和Lg波谱反演方法，系统研究了不同场地中埋深、震源成分（ISO源、CLVD源、DC源及其组合）对源地震矩M₀(source)与Lg波地震矩M₀(Lg)关系的影响。通过定量标定M₀(source)/M₀(Lg)比值，结果表明两者比值具有显著的场地依赖性：朝鲜场地比值普遍高于0.2，而内华达场地低于0.2。CLVD和DC源等次生震源会显著降低朝鲜场地的Lg波激发效率（降幅可达50%），同时埋深增大会减弱P-S转换效应，导致比值进一步减小。进一步的，结合震源模型建立了基于Lg波地震矩的当量估算方法，并以朝鲜第六次核试验数据为例进行了验证。
- 源地震矩 /
- Lg波 /
- 震源模型 /
- 当量估算 /
- 理论地震图
Abstract: Regarding the estimation of yield of underground explosions, this study systematically investigates the influence of burial depth, source components (ISO, CLVD, DC, and their combinations), and site conditions on the relationship between the source seismic moment M₀ (source) and the Lg-wave seismic moment M₀(Lg). Based on theoretical synthetic seismogram simulations and Lg-wave spectral inversion methods, we quantitatively calibrated the M₀(source)/ M₀(Lg) ratio for different test sites. The results reveal significant site dependence: the ratio generally exceeds 0.2 for the North Korean site but falls below 0.2 for the Nevada site. Secondary sources (e.g., CLVD and DC) reduce Lg-wave excitation efficiency in the North Korean site by up to 50%, while increased burial depth weakens P-S conversion effects, further decreasing the ratio. By integrating a seismic source model, we established a yield estimation method based on M₀ (Lg) and validated it using data from North Korea's sixth nuclear test.
- source seismic moment /
- Lg wave /
- source model /
- yield estimation /
- synthetic seismogram

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参考文献(31)

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地下爆炸Lg波地震矩与源地震矩关系数值模拟

doi: 10.3799/dqkx.2025.300

作者简介:
王旭亮，助理研究员，主要从事禁核试核查地震监测方面研究。e-mail: wang.xuliang@ndc.org.cn.ORCID:0009-0005-0153-9002

通讯作者:
靳平,研究员,主要从事禁核试核查地震监测方面研究。e-mail:jinping@nint.ac.cn

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Numerical Simulation on the Relationship between Seismic Moment of Lg Wave and Source of Underground Explosion

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目录

留言板

地下爆炸Lg波地震矩与源地震矩关系数值模拟

doi: 10.3799/dqkx.2025.300

作者简介: 王旭亮，助理研究员，主要从事禁核试核查地震监测方面研究。e-mail: wang.xuliang@ndc.org.cn.ORCID:0009-0005-0153-9002

通讯作者: 靳平,研究员,主要从事禁核试核查地震监测方面研究。e-mail:jinping@nint.ac.cn

计量

出版历程

Numerical Simulation on the Relationship between Seismic Moment of Lg Wave and Source of Underground Explosion

计量

出版历程

目录

作者简介:
王旭亮，助理研究员，主要从事禁核试核查地震监测方面研究。e-mail: wang.xuliang@ndc.org.cn.ORCID:0009-0005-0153-9002

通讯作者:
靳平,研究员,主要从事禁核试核查地震监测方面研究。e-mail:jinping@nint.ac.cn