IOCAS-IR  > 海洋环流与波动重点实验室
Diapycnal Upwelling Over the Kyushu-Palau Ridge in the North Pacific Ocean
Xiao, Xin1,2,3; Zhou, Chun1,2,3,4; Yang, Qingxuan1,2,3,4; Jing, Zhiyou5; Liu, Zhiyu6; Yuan, Dongliang4,7,8,9; Xu, Zhenhua10; Zhao, Wei1,2,3,4; Tian, Jiwei1,2,3,4,5
2023-09-28
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume50Issue:18Pages:11
Corresponding AuthorZhou, Chun(chunzhou@ouc.edu.cn)
AbstractA significant portion (& SIM;2.1 Sv, 1 Sv = 106 m3 s-1) of deep water penetrates into the Philippine Sea through the Yap-Mariana Junction, the sole passage of the Philippine Sea below 4,000 m, and is then upwelled into shallower layers, closing regional overturning circulation. Yet, the structure and variability of this diapycnal upwelling remain poorly understood. Here, we report on a fine-resolution hydrographic observation conducted at the most significant topographic feature in the Philippine Sea, the Kyushu-Palau Ridge (KPR). Enhanced mixing up to O(10-2) m2 s-1 near the KPR is manifested, indicating the presence of substantial upwelling herein. Besides, the ridge-related topography contributes more deep-water mass transformation than abyssal basins in the Philippine Sea. This study highlights the significant role of rough bathymetry features in generating diapycnal upwelling in the North Pacific. In the North Pacific, a significant portion of deep water from the Antarctic enters the Philippine Sea below 4,000 m, where it is upwelled into shallower layers, closing regional overturning circulation. However, where the deep water gains buoyancy in the deep Philippine Sea required to upwell into shallower layers remains largely unknown, rendering our understanding of the western Pacific overturning circulation incomplete. To fill this gap, we conducted observations at two transects over the Kyushu-Palau Ridge (KPR), the most significant topographic feature in the Philippine Sea. Based on this observational program, we reveal the mixing structure down to the bottom across the KPR and estimate the deep water transformation in the deep Philippine Sea. This study illuminates the role of ridge-related topography in driving diapycnal upwelling in the deep ocean and improves our understanding of the deep circulation in the North Pacific Ocean. A three-dimensional distribution of diapycnal mixing over the Kyushu-Palau Ridge is presentedThe spatially variable of mixing across the Kyushu-Palau Ridge results in varying vertical velocitiesThe Kyushu-Palau Ridge contributes more deep-water mass transformation than abyssal basins in the Philippine Sea
DOI10.1029/2023GL104369
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[42076027] ; National Natural Science Foundation of China[92258301] ; National Natural Science Foundation of China[91858205] ; National Natural Science Foundation of China[41720104008] ; National Natural Science Foundation of China[91858204] ; Taishan Talents program[tsqn202306094] ; National Key R&D Program of China[2020YFA0608800] ; Laoshan Laboratory[2022LSL010304-4] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Taishan Scholar Project of the Shandong province ; Kunpeng Outstanding Scholar Program of the FIO/MNR of China ; NSFC Shiptime Sharing Project[42049582]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:001065433500001
PublisherAMER GEOPHYSICAL UNION
WOS KeywordINTERNAL WAVES ; OVERTURNING CIRCULATION ; ROUGH TOPOGRAPHY ; KAENA RIDGE ; DEEP-OCEAN ; WATER ; TURBULENCE ; SHEAR ; DISSIPATION ; TRANSPORT
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/181769
Collection海洋环流与波动重点实验室
Corresponding AuthorZhou, Chun
Affiliation1.Ocean Univ China, Sanya Oceanog Inst, Frontier Sci Ctr Deep Ocean Multispheres & Earth S, Qingdao Sanya, Peoples R China
2.Ocean Univ China, Sanya Oceanog Inst, Phys Oceanog Lab, Qingdao Sanya, Peoples R China
3.Ocean Univ China, Sanya Oceanog Inst, Key Lab Ocean Observat & Informat Hainan Prov, Sanya, Peoples R China
4.Laoshan Lab, Qingdao, Peoples R China
5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China
6.Xiamen Univ, Coll Ocean & Earth Sci, Dept Phys Oceanog, State Key Lab Marine Environm Sci, Xiamen, Peoples R China
7.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China
8.Shandong Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China
9.Univ Chinese Acad Sci, Beijing, Peoples R China
10.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Xin,Zhou, Chun,Yang, Qingxuan,et al. Diapycnal Upwelling Over the Kyushu-Palau Ridge in the North Pacific Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(18):11.
APA Xiao, Xin.,Zhou, Chun.,Yang, Qingxuan.,Jing, Zhiyou.,Liu, Zhiyu.,...&Tian, Jiwei.(2023).Diapycnal Upwelling Over the Kyushu-Palau Ridge in the North Pacific Ocean.GEOPHYSICAL RESEARCH LETTERS,50(18),11.
MLA Xiao, Xin,et al."Diapycnal Upwelling Over the Kyushu-Palau Ridge in the North Pacific Ocean".GEOPHYSICAL RESEARCH LETTERS 50.18(2023):11.
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