IOCAS-IR  > 海洋环流与波动重点实验室
Spatial distribution of turbulent diapycnal mixing along the Mindanao current inferred from rapid-sampling Argo floats
He, Ying1,3; Wang, Jianing1,2,3; Wang, Fan1,2,3; Hibiya, Toshiyuki4
2022
Source PublicationJOURNAL OF OCEANOGRAPHY
ISSN0916-8370
Pages14
Corresponding AuthorWang, Jianing(win@qdio.ac.cn) ; Wang, Fan(fwang@qdio.ac.cn)
AbstractThe Mindanao Current (MC) bridges the North Pacific low-latitude western boundary current system region and the Indonesian Seas by supplying the North Pacific waters to the Indonesian Throughflow. Although the previous study speculated that the diapycnal mixing along the MC might be strong on the basis of the water mass analysis of the gridded climatologic dataset, the real spatial distribution of diapycnal mixing along the MC has remained to be clarified. We tackle this question here by applying a finescale parameterization to temperature and salinity profiles obtained using two rapid-sampling profiling Argo floats that drifted along the MC. The western boundary (WB) region close to the Mindanao Islands and the Sangihe Strait are the two mixing hotspots along the MC, with energy dissipation rate epsilon and diapycnal diffusivity K-rho enhanced up to similar to 10(-6) W kg(-1) and similar to 10(-3) m(2) s(-1), respectively. Except for the above two mixing hotspots, the turbulent mixing along the MC is mostly weak, with epsilon and K-rho to be 10(-11)-10(-9) W kg(-1) and 10(-6)-10(-5) m(2) s(-1), respectively. Strong mixing in the Sangihe Strait can be basically attributed to the existence of internal tides, whereas strong mixing in the WB region suggests the existence of internal lee waves. We also find that water mass transformation along the MC mainly occurs in the Sangihe Strait where the water masses are subjected to strong turbulent mixing during a long residence time.
KeywordTurbulent diapycnal mixing Mindanao current Indonesian throughflow Water mass transformation Internal tides Internal lee waves
DOI10.1007/s10872-021-00624-3
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[91958204] ; National Natural Science Foundation of China[41776022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SYS034] ; China Scholarship Council (CSC)
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000736938500001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/177645
Collection海洋环流与波动重点实验室
Corresponding AuthorWang, Jianing; Wang, Fan
Affiliation1.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan
First Author AffilicationCenter for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationCenter for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
He, Ying,Wang, Jianing,Wang, Fan,et al. Spatial distribution of turbulent diapycnal mixing along the Mindanao current inferred from rapid-sampling Argo floats[J]. JOURNAL OF OCEANOGRAPHY,2022:14.
APA He, Ying,Wang, Jianing,Wang, Fan,&Hibiya, Toshiyuki.(2022).Spatial distribution of turbulent diapycnal mixing along the Mindanao current inferred from rapid-sampling Argo floats.JOURNAL OF OCEANOGRAPHY,14.
MLA He, Ying,et al."Spatial distribution of turbulent diapycnal mixing along the Mindanao current inferred from rapid-sampling Argo floats".JOURNAL OF OCEANOGRAPHY (2022):14.
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