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

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	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
	Hua, QF; Xiao, H; Xue, M; Yang, T; Liu, CG; Xia, SH; Huang, HB; Le, BM; Yu, YQ; Huo, D
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2018
卷号	123 期号:5 页码:3923-3942
通讯作者	meixue@tongji.edu.cn
中文摘要	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.
学科主题	Geochemistry & Geophysics
关键词[WOS]	microseisms ; typhoon ; source region ; wave types ; South China Sea (SCS)
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17136]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Hua, QF,Xiao, H,Xue, M,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	Hua, QF.,Xiao, H.,Xue, M.,Yang, T.,Liu, CG.,...&Gao, JY.(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	Hua, QF,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.