IOCAS-IR  > 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, Weidong1,2,3,4; Robertson, Robin5; Wang, Yang1,2,3,4; Zhao, Chen1,2,3,4; Hao, Zhanjiu1,2,3,4; Yin, Baoshu1,2,3,4,6; Xu, Zhenhua1,2,3,4
2022-06-01
Source PublicationREMOTE SENSING
Volume14Issue:11Pages:20
Corresponding AuthorXu, Zhenhua(xuzhenhua@qdio.ac.cn)
AbstractBreaking 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.
Keywordinternal tides spatiotemporal variation East China Sea modal structure energy cascade
DOI10.3390/rs14112570
Indexed BySCI
Language英语
Funding ProjectStrategic 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 Research AreaEnvironmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000808656400001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/179453
Collection海洋环流与波动重点实验室
Corresponding AuthorXu, Zhenhua
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Xiamen Univ Malaysia, China Asean Coll Marine Sci, Sepang 43900, Malaysia
6.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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.
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