气候变化领域集成服务门户(CCPortal): Seismological Investigations of Two Massive Explosions in Tianjin, China

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DOI	10.1785/0220150229
	Seismological Investigations of Two Massive Explosions in Tianjin, China
	Zhao, Xu; Feng, Wei; Tan, Yipei; Li, Juan; Pei, Shunping; An, Yanru; Hua, Wei; He, Shaolin; Zhao, Yong; Liu, Jie; Yao, Zhenxing
通讯作者	Liu, J (通讯作者)
发表日期	2016
ISSN	0895-0695
EISSN	1938-2057
起始页码	826
结束页码	836
卷号	87 期号:4
英文摘要	In this study, we analyze available weak-and strong-motion seismograms to discern the main source characteristics of the 12 August 2015 Tianjin explosions. The disaster involved two large explosions, which can be clearly identified in the near-field seismic recordings. The first explosion (event 1) took place at 15:34:04.68 (UTC) and the second at 15:34:36.94 (UTC). The average time interval between the two events was about 32.3 s, which is consistent with the result determined by cross correlation of the whispering gallery wave (WG phase). The two events did not occur at the same site, and the second explosion was located 65 +/- 10 m northwest (N352 degrees W) of the first one. The local magnitudes ML of the two explosions were further measured as 2.4 and 2.9, respectively. The Fourier spectra from the two closest stations, DAG and BET, show that the predominant frequency of the waveforms ranged from 0.7 to 0.9 Hz after the long-period wavetrains had arrived. According to the distribution of the three-component peak ground acceleration, the area with a shaking intensity of modified Mercalli intensity VI spanned up to 131 km(2). However, the peak intensity of this explosion did not reach an intensity of VII, based on the ground-motion attenuation relation.
关键词	SEISMIC NETWORK CALIFORNIA EARTHQUAKE SITE
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000378490100005
来源期刊	SEISMOLOGICAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258764
推荐引用方式 GB/T 7714	Zhao, Xu,Feng, Wei,Tan, Yipei,et al. Seismological Investigations of Two Massive Explosions in Tianjin, China[J]. 中国科学院青藏高原研究所,2016,87(4).
APA	Zhao, Xu.,Feng, Wei.,Tan, Yipei.,Li, Juan.,Pei, Shunping.,...&Yao, Zhenxing.(2016).Seismological Investigations of Two Massive Explosions in Tianjin, China.SEISMOLOGICAL RESEARCH LETTERS,87(4).
MLA	Zhao, Xu,et al."Seismological Investigations of Two Massive Explosions in Tianjin, China".SEISMOLOGICAL RESEARCH LETTERS 87.4(2016).