IDSSE OpenIR  > 深海科学研究部  > 海洋环流观测与数值模拟研究室
The characteristics of the mid-depth striations in the North Indian Ocean
Xia, Yifan1,2,3; Du, Yan1,2,3,4; Qiu, Bo5; Cheng, Xuhua6; Wang, Tianyu1,2; Xie, Qiang7
2020-08-01
Source PublicationDEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
ISSN0967-0637
Volume162Pages:15
AbstractArgo float trajectory data has been used to estimate the velocities of mid-depth (1000 db) currents in the North Indian Ocean (NIO). The structure of the upper ocean absolute geostmphic currents can be derived more accurately from the Argo temperature and salinity profiles by referring to the estimated velocities rather than by assuming a level of "no motion". The derived flow field reveals that the eastward zonal velocities generate striation-like structures in the Arabian Sea, which is most prominent above the layer of 500 db layer, with a meridional scale of similar to 300 km; however, such structures are barely observed in the Bay of Bengal. This meridional scale as well as the distribution of the mid-depth striations are unique to the NIO, as compared with the other ocean basins. The nonlinear 1 1/2-layer reduced-gravity model combined with the triad baroclinic Rossby wave interaction theory have been used to determine the essential factors controlling the characteristics of the quasizonal striation structure. Compared with the North Pacific Ocean, the meridional scale in the NIO is narrower, and is caused by the smaller basin size in the equatorial zone, rather than by the semiannual wind stress forcing period or the eastern boundary angle. Furthermore, the coastal trapped Kelvin waves significantly contribute to the generation of the zonal striations in the Arabian Sea.
KeywordBaroclinic rossby wave Striations Triad rossby wave interaction
DOI10.1016/j.dsr.2020.103307
Indexed BySCI ; SCI
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences ; State Oceanic Administration of China ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; State Key Laboratory of Tropical Oceanography ; JAMSTEC
Language英语
Funding ProjectNational Natural Science Foundation of China[41830538] ; National Natural Science Foundation of China[41525019] ; Chinese Academy of Sciences[XDA15020901] ; Chinese Academy of Sciences[133244KYSB20190031] ; Chinese Academy of Sciences[ZDRWXH-2019-2] ; State Oceanic Administration of China[GASI-IPOVAI02] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0303] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[2019BT2H594] ; State Key Laboratory of Tropical Oceanography[LTOZZ1802] ; JAMSTEC
WOS KeywordEQUATORIAL UNDERCURRENT JETS ; MULTIPLE ZONAL JETS ; GENERAL-CIRCULATION ; SPECTRAL-ANALYSIS ; DEEP CURRENTS ; PACIFIC ; WIND ; VARIABILITY ; SURFACE
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000551473200005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/7837
Collection深海科学研究部_海洋环流观测与数值模拟研究室
Corresponding AuthorDu, Yan
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol SCSIO, State Key Lab Trop Oceanog, Guangzhou, Peoples R China
2.Chinese Acad Sci, China Pakistan Joint Res Ctr Earth Sci, Guangzhou, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Southern Marine Sci & Engn Guangdong Lab, Guangzhou, Peoples R China
5.Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA
6.Hohai Univ, Coll Oceanog, Nanjing, Peoples R China
7.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
Recommended Citation
GB/T 7714
Xia, Yifan,Du, Yan,Qiu, Bo,et al. The characteristics of the mid-depth striations in the North Indian Ocean[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2020,162:15.
APA Xia, Yifan,Du, Yan,Qiu, Bo,Cheng, Xuhua,Wang, Tianyu,&Xie, Qiang.(2020).The characteristics of the mid-depth striations in the North Indian Ocean.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,162,15.
MLA Xia, Yifan,et al."The characteristics of the mid-depth striations in the North Indian Ocean".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 162(2020):15.
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