Diapycnal Upwelling Over the Kyushu-Palau Ridge in the North Pacific Ocean

doi:10.1029/2023GL104369

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, Xin 1,2,3; Zhou, Chun 1,2,3,4; Yang, Qingxuan 1,2,3,4; Jing, Zhiyou 5; Liu, Zhiyu 6; Yuan, Dongliang4,7,8,9 ; Xu, Zhenhua 10; Zhao, Wei 1,2,3,4; Tian, Jiwei 1,2,3,4,5
	2023-09-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
卷号	50 期号:18 页码:11
通讯作者	Zhou, Chun(chunzhou@ouc.edu.cn)
摘要	A 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
DOI	10.1029/2023GL104369
收录类别	SCI
语种	英语
资助项目	National 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研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001065433500001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	INTERNAL WAVES ; OVERTURNING CIRCULATION ; ROUGH TOPOGRAPHY ; KAENA RIDGE ; DEEP-OCEAN ; WATER ; TURBULENCE ; SHEAR ; DISSIPATION ; TRANSPORT
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/181769
专题	海洋环流与波动重点实验室
通讯作者	Zhou, Chun
作者单位	1.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
推荐引用方式 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.