The Characteristics of Microseisms in South China Sea: Results From a Combined Data Set of OBSs, Broadband Land Seismic Stations, and a Global Wave Height Model

doi:10.1029/2017JB015291

	The Characteristics of Microseisms in South China Sea: Results From a Combined Data Set of OBSs, Broadband Land Seismic Stations, and a Global Wave Height Model
	Xiao, Han 1; Xue, Mei 1; Yang, Ting 1,2; Liu, Chenguang 3; Hua, Qingfeng 3; Xia, Shaohong 4; Huang, Haibo 4; Le, Ba Manh 1; Yu, Youqiang 1; Huo, Da 1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2018-05
卷号	123 期号:5 页码:3923-3942
关键词	microseisms typhoon source region wave types South China Sea (SCS)
ISSN号	2169-9313
DOI	10.1029/2017JB015291
英文摘要	It has long been recognized that ocean gravity waves can generate microseisms through their interactions and coupling with the solid earth. Their generation mechanisms, wave types, and propagation have been studied and debated intensively. In this study, we focus on the characteristics of microseisms in South China Sea (SCS) and compare them with globally observed microseisms. We use data from six ocean bottom seismometers, 10 publicly available broadband land seismometers near SCS, and a reanalyzed global wave height model from 1 May 2012 to 20 August 2012 (UTC), the time span of ocean bottom seismometers' data. We apply three techniques including power spectral density, correlation, and frequency dependent polarization analysis. Our results show that (1) microseisms observed in SCS are dominated by sources from adjacent oceans, instead of the common global sources from the Pacific, Atlantic, or Indian Ocean; (2) the split of double-frequency microseisms (DFMs) is observed in SCS, especially on land stations: the sources are located near the central sea basin for long-period DFMs (0.1-0.25Hz) and are local near stations for short-period DFMs (0.25-0.5Hz); (3) typhoons both strengthen microseisms and affect the source locations of microseisms with the biggest influence on the short-period DFMs; and (4) microseisms in or near SCS are a mixture of Love and Rayleigh waves and the relative dominance of Love and Rayleigh waves changes with locations.
资助项目	National Natural Science Foundation of China[41276037] ; National Natural Science Foundation of China[41676025] ; National Natural Science Foundation of China[91128209]
WOS关键词	DEPENDENT POLARIZATION ANALYSIS ; AMBIENT NOISE ; SECONDARY MICROSEISMS ; SOURCE LOCATIONS ; OCEAN ; ARRAY ; TOMOGRAPHY ; CLIMATE ; GENERATION ; DIRECTIONALITY
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000435944700036
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25636]
专题	自然资源部第一海洋研究所
通讯作者	Xue, Mei
作者单位	1.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China 2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen, Peoples R China 3.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China 5.State Ocean Adm, Inst Oceanog 2, Hangzhou, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Han,Xue, Mei,Yang, Ting,et al. The Characteristics of Microseisms in South China Sea: Results From a Combined Data Set of OBSs, Broadband Land Seismic Stations, and a Global Wave Height Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2018,123(5):3923-3942.
APA	Xiao, Han.,Xue, Mei.,Yang, Ting.,Liu, Chenguang.,Hua, Qingfeng.,...&Gao, Jinyao.(2018).The Characteristics of Microseisms in South China Sea: Results From a Combined Data Set of OBSs, Broadband Land Seismic Stations, and a Global Wave Height Model.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,123(5),3923-3942.
MLA	Xiao, Han,et al."The Characteristics of Microseisms in South China Sea: Results From a Combined Data Set of OBSs, Broadband Land Seismic Stations, and a Global Wave Height Model".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 123.5(2018):3923-3942.