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Seismological observations on the 2019 March 21 accidental explosion at Xiangshui chemical plant in Jiangsu, China

文献类型：期刊论文

作者Song, Yishan1,5; Zhao, Lian-Feng1,4; Xie, Xiao-Bi3; Ma, Xiao1,5; Du, Guilin2,7; Tian, Xiaofeng6; Yao, Zhen-Xing1
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2022
卷号228期号:1页码:538-550
ISSN号0956-540X
关键词Body waves Earthquake monitoring and test-ban treaty verification Earthquake source observations Seismic attenuation Wave propagation
DOI10.1093/gji/ggab356
英文摘要On 2019 March 21, an explosion accidentally occurred at a chemical plant in Xiangshui, Yancheng City, Jiangsu Province, China. Using broad-band digital seismic data from East China, South Korea and Japan, we investigate properties of the Xiangshui explosion as well as two nearby chemical explosions and four nearby natural earthquakes in Jiangsu Province, East China. From Lg and Rayleigh waves recorded by regional networks, both body wave magnitude m(b) (Lg) and surface wave magnitude M-s (Rayleigh) are calculated for these events. The magnitudes of the Xiangshui explosion are m(b) (Lg) = 3.39 +/- 0.24 and M-s = 1.95 +/- 0.27, respectively. Both the empirical magnitude-yield relation for buried explosion and empirical yield-crater dimension relation for open-pit explosion are adopted for investigating the explosive yield. The result from the yield-crater dimension relation is approximately 492 ton, which is consistent with the ground truth and considerably larger than that from the buried source model. This also reveals that, for Xiangshui explosion, the explosion to seismic energy conversion rate is approximately one-third compared to a similar sized fully confined explosion. By comparing the body wave and surface wave magnitudes from explosions and nearby earthquakes, we find that the m(b):M-s discriminant calculated at regional distances cannot properly distinguish explosions from natural earthquakes. However, the P/S spectral ratios Pg/Lg, Pn/Lg and Pn/Sn from the same data set can be good discriminants for identifying explosions from earthquakes.
WOS关键词SURFACE-WAVE MAGNITUDE ; WESTERN UNITED-STATES ; TELESEISMIC DISTANCES ; YIELD ESTIMATION ; NUCLEAR TEST ; TIME-DOMAIN ; DISCRIMINATION ; EARTHQUAKES
资助项目Special Fund of China Seismic Experimental Site[2019CSES0103] ; Special Fund of China Seismic Experimental Site[2016CESE0203] ; National Natural Science Foundation of China[41630210] ; National Natural Science Foundation of China[41674060] ; National Natural Science Foundation of China[41974054] ; National Natural Science Foundation of China[41974061]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000741350600007
资助机构Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; Special Fund of China Seismic Experimental Site ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/103987]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Zhao, Lian-Feng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China
3.Univ Calif Santa Cruz, Inst Geophys & Planetary Phys, Santa Cruz, CA 95064 USA
4.Chinese Acad Sci, Inst Geol & Geophys, Mohe Observ Geophys, Beijing 100049, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
6.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou 450002, Peoples R China
7.Weihai Earthquake Monitoring Ctr, Weihai 264200, Peoples R China
推荐引用方式
GB/T 7714		 Song, Yishan,Zhao, Lian-Feng,Xie, Xiao-Bi,et al. Seismological observations on the 2019 March 21 accidental explosion at Xiangshui chemical plant in Jiangsu, China[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2022,228(1):538-550.
APA Song, Yishan.,Zhao, Lian-Feng.,Xie, Xiao-Bi.,Ma, Xiao.,Du, Guilin.,...&Yao, Zhen-Xing.(2022).Seismological observations on the 2019 March 21 accidental explosion at Xiangshui chemical plant in Jiangsu, China.GEOPHYSICAL JOURNAL INTERNATIONAL,228(1),538-550.
MLA Song, Yishan,et al."Seismological observations on the 2019 March 21 accidental explosion at Xiangshui chemical plant in Jiangsu, China".GEOPHYSICAL JOURNAL INTERNATIONAL 228.1(2022):538-550.

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来源：地质与地球物理研究所

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