Vertical multiple-layer structure of temperature and turbulent diffusivity in the South China Sea

Xin He; Changrong Liang; Yang Yang; Guiying Chen; Xiaodong Shang; Xiaozhou He; Penger Tong

doi:10.1007/s13131-022-2005-5

Volume 41 Issue 10

Oct. 2022

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Xin He, Changrong Liang, Yang Yang, Guiying Chen, Xiaodong Shang, Xiaozhou He, Penger Tong. Vertical multiple-layer structure of temperature and turbulent diffusivity in the South China Sea[J]. Acta Oceanologica Sinica, 2022, 41(10): 14-21. doi: 10.1007/s13131-022-2005-5

Citation:

Xin He, Changrong Liang, Yang Yang, Guiying Chen, Xiaodong Shang, Xiaozhou He, Penger Tong. Vertical multiple-layer structure of temperature and turbulent diffusivity in the South China Sea[J]. Acta Oceanologica Sinica, 2022, 41(10): 14-21. doi: 10.1007/s13131-022-2005-5

Citation:

Xin He, Changrong Liang, Yang Yang, Guiying Chen, Xiaodong Shang, Xiaozhou He, Penger Tong. Vertical multiple-layer structure of temperature and turbulent diffusivity in the South China Sea[J]. Acta Oceanologica Sinica, 2022, 41(10): 14-21. doi: 10.1007/s13131-022-2005-5

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Vertical multiple-layer structure of temperature and turbulent diffusivity in the South China Sea

doi: 10.1007/s13131-022-2005-5

Xin He^{1, 2},
Changrong Liang^{1, 3, 4},
Yang Yang⁵,
Guiying Chen^{1, 3, 4},
Xiaodong Shang^{1, 3, 4
,
,},
Xiaozhou He^{6
,
,},
Penger Tong⁷

1.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
4.
Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China
5.
Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
6.
School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China
7.
Department of Physics, Hong Kong University of Science and Technology, Hong Kong 999077, China

Funds: The National Key R&D Program of China under contract No. 2021YFC3101301; the Innovative Academy of Marine Information Technology, Chinese Academy of Sciences under contract No. CXBS202101; the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) under contract No. GML2019ZD0304; the National Natural Science Foundation of China under contract Nos 41876022, 41876023, 11772111 and 91952101; the Guangdong Natural Science Foundation of China under contract Nos 1914050004866 and 2020A1515011094; the Hong Kong Research Grants Council under contract Nos 16301719 and N-HKUST604/19; the Science, Technology and Innovation Commission of Shenzhen Municipality under contract No. KQJSCX20180328165817522; the Science and Technology Program of Guangzhou under contract No. 202102020707.

More Information

Corresponding author: xdshang@scsio.ac.cn; hexiaozhou@hit.edu.cn
Received Date: 2021-09-06
Accepted Date: 2022-01-07

Available Online: 2022-05-16

Publish Date: 2022-10-27

Abstract

Abstract

We report field measurements of vertical profiles of the turbulent diffusivity and temperature at different stations in the South China Sea (SCS). Our study shows that the measured turbulent diffusivity follows a power-law distribution with a varying exponent in water layers. Similar multiple-layer scaling regimes were also observed from the temperature fluctuations. Combining turbulent diffusivity and temperature fluctuations, the vertical structure of temperature was revealed. Furthermore, we discussed the temperature profiles in each layer. A constant function of a dimensionless temperature profile was found in water layers that have identical turbulence conditions. Our results reveal the multiple-layer structure of temperature in the SCS. This study contributes to the understanding of the vertical structure of multiple layers in the SCS and provides clues for exploring the physical mechanism for maintaining the temperature structure.
- temperature profile,
- turbulent diffusivity,
- South China Sea,
- multiple layers

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References(25)

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