Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| Structure and Variability of the Kuroshio and Luzon Undercurrent Observed by a Mooring Array | |
Ma, Jie1,2; Hu, Shijian1,2,3,4; Hu, Dunxin1,2,3,4; Villanoy, Cesar5; Wang, Qingye1,2,3,4; Lu, Xi1,4 ; Yuan, Xin1,4
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| 2022-02-01 | |
| 发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| ISSN | 2169-9275 |
| 卷号 | 127期号:2页码:12 |
| 通讯作者 | Hu, Shijian(sjhu@qdio.ac.cn) |
| 摘要 | The spatial structure and variability of the western boundary currents east of Luzon Island at 18 degrees N are investigated using measurements collected by acoustic Doppler current profilers (ADCPs) from three moorings between January 2018 and May 2020. During the observation period, the southward velocity of Luzon Undercurrent (LUC) has a maximum greater than 0.04 m s-1 ${\mathrm{s}}<^>{-1}$ at about 800 m on average and instantaneously reaches a maximum speed of about 0.47 m s-1 ${\mathrm{s}}<^>{-1}$. Observations indicate that the LUC and Kuroshio have significant intraseasonal variability and the LUC is reversed occasionally. We find that the strong upper-layer anticyclonic eddy plays a key role in the weakening and reversal of LUC and that the LUC is a permanent mean undercurrent. A vertical mode decomposition analysis is employed and results show that the first two baroclinic modes explain the main vertical features of the LUC and Kuroshio at its origin. No reversal of the southward undercurrent occurs in the second baroclinic mode velocity. We conclude that the LUC variability is generally a result of the second baroclinic mode but the observed reversal of the LUC is mainly caused by the first mode. |
| 关键词 | Kuroshio Luzon undercurrent mooring eddy variability |
| DOI | 10.1029/2021JC017754 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[42006002] ; National Natural Science Foundation of China[42022040] ; China Postdoctoral Science Foundation[2021T140674] ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDB42010403] ; Shandong Provincial Natural Science Foundation[ZR2020JQ18] ; Key Projects of Foreign Cooperation of the Bureau of International Cooperation CAS[132B61KYSB20170005] ; Youth Innovation Promotion Association of CAS[2018240] ; CAS Interdisciplinary Innovation Team[JCTD-2020-12] |
| WOS研究方向 | Oceanography |
| WOS类目 | Oceanography |
| WOS记录号 | WOS:000765614000023 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/178165 |
| 专题 | 海洋环流与波动重点实验室 |
| 通讯作者 | Hu, Shijian |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Univ Philippines Diliman, Quezon City, Philippines |
| 第一作者单位 | 海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心 |
| 通讯作者单位 | 海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心 |
| 推荐引用方式 GB/T 7714 | Ma, Jie,Hu, Shijian,Hu, Dunxin,et al. Structure and Variability of the Kuroshio and Luzon Undercurrent Observed by a Mooring Array[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2022,127(2):12. |
| APA | Ma, Jie.,Hu, Shijian.,Hu, Dunxin.,Villanoy, Cesar.,Wang, Qingye.,...&Yuan, Xin.(2022).Structure and Variability of the Kuroshio and Luzon Undercurrent Observed by a Mooring Array.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,127(2),12. |
| MLA | Ma, Jie,et al."Structure and Variability of the Kuroshio and Luzon Undercurrent Observed by a Mooring Array".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 127.2(2022):12. |
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