气候变化领域集成服务门户(CCPortal): Effects of Secondary Sources of Underground Nuclear Explosions on the m(b) : M-s Criterion and Implications for Discrimination of the DPRK's Nuclear Tests

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DOI	10.1785/0120200165
	Effects of Secondary Sources of Underground Nuclear Explosions on the m(b) : M-s Criterion and Implications for Discrimination of the DPRK's Nuclear Tests
	Xu, Henglei; Ni, Sidao; Jin, Ping; Ding, Shiban; Wang, Hongchun
通讯作者	Wang, HC (通讯作者)，Northwest Inst Nucl Technol, Xian, Shaanxi, Peoples R China.
发表日期	2021
ISSN	0037-1106
EISSN	1943-3573
起始页码	590
结束页码	605
卷号	111 期号:1
英文摘要	The m(b) : M-s (m(b) vs. M-s) relationship is an important criterion for screening explosions from earthquakes and has been widely adopted in seismological monitoring by the Comprehensive Nuclear-Test-Ban Treaty Organization. In general, the earthquakes have larger M-s than the underground explosions with equivalent m(b). However, it has been reported that this recognition criterion failed to identify some explosions at the North Korea nuclear test site. In this study, we investigate the potential effects of secondary source components, including the compensated linear vector dipole (CLVD) and double-couple (DC) sources, on m(b) and M-s magnitude measurements and the physical mechanism of the m(b) : M-s recognition criterion by calculating synthetic seismograms. The results show an apparent critical body-wave magnitude of 5 when using the m(b) : M-s method to discriminate North Korean underground nuclear explosions. The M-s measurements decrease as the CLVD components increase, whereas the effects from the DC source can be neglected. Small events, such as the first five North Korean nuclear tests, generate weak CLVD components, leading to the failure of m(b) : M-s-based discrimination, whereas the last event, with a larger magnitude, caused extensive damage and hence can be successfully discriminated. In addition, the large difference between the source spectrum of explosions and those of earthquakes might be another important factor in the successful m(b) : M-s-based discrimination of the sixth North Korean nuclear test.
关键词	ADVANCED SEISMIC ANALYSES SURFACE-WAVE MAGNITUDE J. L. STEVENS B. C. KOHL R. MURPHY EVENT EARTHQUAKES INVERSION RELEASE NTS
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000614215300039
来源期刊	BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253848
作者单位	[Xu, Henglei; Jin, Ping; Wang, Hongchun] Northwest Inst Nucl Technol, Xian, Shaanxi, Peoples R China; [Xu, Henglei; Ding, Shiban] Univ Sci & Technol China, Sch Earth & Space Sci, Anhui Prov, Hefei, Anhui, Peoples R China; [Ni, Sidao] Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Xu, Henglei,Ni, Sidao,Jin, Ping,et al. Effects of Secondary Sources of Underground Nuclear Explosions on the m(b) : M-s Criterion and Implications for Discrimination of the DPRK's Nuclear Tests[J]. 中国科学院西北生态环境资源研究院,2021,111(1).
APA	Xu, Henglei,Ni, Sidao,Jin, Ping,Ding, Shiban,&Wang, Hongchun.(2021).Effects of Secondary Sources of Underground Nuclear Explosions on the m(b) : M-s Criterion and Implications for Discrimination of the DPRK's Nuclear Tests.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,111(1).
MLA	Xu, Henglei,et al."Effects of Secondary Sources of Underground Nuclear Explosions on the m(b) : M-s Criterion and Implications for Discrimination of the DPRK's Nuclear Tests".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 111.1(2021).