Classification and 3-D distribution of upper layer water masses in the northern South China Sea

Zhu Jia; Zheng Quanan; Hu Jianyu; Lin Hongyang; Chen Dewen; Chen Zhaozhang; Sun Zhenyu; Li Liyan; Kong Hao

doi:10.1007/s13131-019-1418-2

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Article Navigation > Acta Oceanologica Sinica > 2019 > 38(4): 126-135

Zhu Jia, Zheng Quanan, Hu Jianyu, Lin Hongyang, Chen Dewen, Chen Zhaozhang, Sun Zhenyu, Li Liyan, Kong Hao. Classification and 3-D distribution of upper layer water masses in the northern South China Sea[J]. Acta Oceanologica Sinica, 2019, 38(4): 126-135. doi: 10.1007/s13131-019-1418-2

Citation:

Zhu Jia, Zheng Quanan, Hu Jianyu, Lin Hongyang, Chen Dewen, Chen Zhaozhang, Sun Zhenyu, Li Liyan, Kong Hao. Classification and 3-D distribution of upper layer water masses in the northern South China Sea[J]. Acta Oceanologica Sinica, 2019, 38(4): 126-135. doi: 10.1007/s13131-019-1418-2

Citation:

Zhu Jia, Zheng Quanan, Hu Jianyu, Lin Hongyang, Chen Dewen, Chen Zhaozhang, Sun Zhenyu, Li Liyan, Kong Hao. Classification and 3-D distribution of upper layer water masses in the northern South China Sea[J]. Acta Oceanologica Sinica, 2019, 38(4): 126-135. doi: 10.1007/s13131-019-1418-2

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Classification and 3-D distribution of upper layer water masses in the northern South China Sea

doi: 10.1007/s13131-019-1418-2

1.
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
2.
Department of Atmospheric and Oceanic Science, University of Maryland, College Park, Maryland 20742, USA
3.
Marine Forecast Station of Xiamen, State Oceanic Administration, Xiamen 361012, China
4.
Fujian Provincial Key Laboratory of Coast and Island Management Technology, Fujian Institute of Oceanography, Xiamen 361013, China

Received Date: 2018-02-10

Abstract

Abstract

Using the fuzzy cluster analysis and the temperature-salinity (T-S) similarity number analysis of cruise conductivity-temperature-depth (CTD) data in the upper layer (0-300 m) of the northern South China Sea (NSCS), we classify the upper layer water of the NSCS into six water masses:diluted water (D), surface water (SS), the SCS subsurface water mass (U_S), the Pacific Ocean subsurface water mass (U_P), surface-subsurface mixed water (SU) and subsurface-intermediate mixed water (UI). A new stacked stereogram is used to illustrate the water mass distribution, and to examine the source and the distribution of U_P, combining with the sea surface height data and geostrophic current field. The results show that water mass U_P exists in all four seasons with the maximum range in spring and the minimum range in summer. In spring and winter, the U_P intrudes into the Luzon Strait and the southwest of Taiwan Island via the northern Luzon Strait in the form of nonlinear Rossby eddies, and forms a high temperature and high salinity zone east of the Dongsha Islands. In summer, the U_P is sporadically distributed in the study area. In autumn, the U_P is located in the upper 200 m layer east of Hainan Island.
- water mass classification,
- northern South China Sea,
- fuzzy cluster analysis,
- T-S similarity number

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References(27)

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