Distinct Variability between Semidiurnal and Diurnal Internal Tides at the East China Sea Shelf

doi:10.3390/rs14112570

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Distinct Variability between Semidiurnal and Diurnal Internal Tides at the East China Sea Shelf
	Wang, Weidong 2,3,4,5; Robertson, Robin 1; Wang, Yang 2,3,4,5; Zhao, Chen 2,3,4,5; Hao, Zhanjiu 2,3,4,5; Yin, Baoshu 2,3,4,5,6; Xu, Zhenhua 2,3,4,5
刊名	REMOTE SENSING
	2022-06-01
卷号	14 期号:11 页码:20
关键词	internal tides spatiotemporal variation East China Sea modal structure energy cascade
DOI	10.3390/rs14112570
通讯作者	Xu, Zhenhua(xuzhenhua@qdio.ac.cn)
英文摘要	Breaking internal tides and induced mixing are critical to shelf dynamics, including heat and mass exchanges. Spatiotemporal variability of internal tides and modulation factors for the southern East China Sea shelf were examined based on a combination of a three-month mooring velocity and satellite altimeter data. Semidiurnal and diurnal internal tides exhibited distinct temporal trends, with the semidiurnal internal tides enhanced by an order of magnitude during the latter half of the record, while the diurnal internal tides followed quasi spring-neap cycles with a generally stable intensity except for two specific periods of strengthening. These internal tides probably originated remotely over the shelf-slope area northeast of Taiwan. Time-varying stratification was the most important factor for the internal tidal magnitude. In addition, varying background currents influenced the diurnal critical latitude band, which explains the slightly enhanced diurnal internal tides during the two periods. Although both semidiurnal and diurnal internal tides were mode-1 dominated, the semidiurnal internal tides were surface intensified while the diurnal tides were bottom intensified. The proportion of higher mode internal tides increased during robust eddy activities. Stronger background vertical shear corresponded to high-frequency events and energy transfers from tidal frequencies to high frequencies associated with turbulent mixing.
资助项目	Strategic Pioneering Research Program of CAS ; National Natural Science Foundation of China (NSFC) ; NSFC-Shandong Joint Fund ; National Key Research and Development Program of China[XDA22050202] ; National Key Research and Development Program of China[92058202] ; National Key Research and Development Program of China[XDB42000000] ; National Key Research and Development Program of China[42076022] ; National Key Research and Development Program of China[U1806227] ; National Key Research and Development Program of China[2017YFA0604102] ; CAS Key Research Program of Frontier Sciences ; Key Deployment Project of Center for Ocean Mega-Research of Science ; CAS ; CSIRO[QYZDB-SSW-DQC024] ; CSIRO[COMS2020Q07] ; CSIRO[133244KYSB20190031]
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	MDPI
WOS记录号	WOS:000808656400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/179452]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Xu, Zhenhua
作者单位	1.Xiamen Univ Malaysia, China Asean Coll Marine Sci, Sepang 43900, Malaysia 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weidong,Robertson, Robin,Wang, Yang,et al. Distinct Variability between Semidiurnal and Diurnal Internal Tides at the East China Sea Shelf[J]. REMOTE SENSING,2022,14(11):20.
APA	Wang, Weidong.,Robertson, Robin.,Wang, Yang.,Zhao, Chen.,Hao, Zhanjiu.,...&Xu, Zhenhua.(2022).Distinct Variability between Semidiurnal and Diurnal Internal Tides at the East China Sea Shelf.REMOTE SENSING,14(11),20.
MLA	Wang, Weidong,et al."Distinct Variability between Semidiurnal and Diurnal Internal Tides at the East China Sea Shelf".REMOTE SENSING 14.11(2022):20.