SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
The characteristics of the mid-depth striations in the North Indian Ocean
Xia, Yifan1,2; Du, Yan1,2,3; Qiu, Bo4; Cheng, Xuhua5; Wang, Tianyu1; Xie, Qiang6
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
Document Type期刊论文
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,2020,162:103307.
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,162,103307.
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):103307.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.