Demonstration of a new indicator for studying upwelling in the Northern South China Sea

Li Lin, You Shao Wang, Cui Ci Sun, Nan Li, Haili Wang, B. Greg Mitchell, Mei Lin Wu, Hui Song, Jingfeng Wu

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to demonstrate that silicate (SiO 3-Si) can be used as an indicator to study upwelling in the northern South China Sea, hierarchical cluster analysis (CA) and principle component analysis (PCA) were applied to analyse the metrics of the data consisting of 14 physical-chemical-biological parameters at 32 stations. CA categorized the 32 stations into two groups (low and high nutrient groups). PCA was applied to identify five Principal Components (PCs) explaining 78.65% of the total variance of the original data. PCA found important factors that can describe nutrient sources in estuarine, upwelling, and non-upwelling areas. PC4, representing the upwelling source, is strongly correlated to SiO 3-Si. The spatial distribution of silicate from the surface to 200 m depth clearly showed the upwelling regions, which is also supported by satellite observations of sea surface temperature.

Original languageEnglish (US)
Pages (from-to)605-622
Number of pages18
JournalOceanologia
Volume53
Issue number2
DOIs
StatePublished - 2011

Fingerprint

South China Sea
Cluster analysis
Nutrients
Silicates
upwelling
principal component analysis
Demonstrations
silicates
cluster analysis
Spatial distribution
silicate
nutrients
Satellites
surface temperature
nutrient
spatial distribution
sea surface temperature
Temperature
indicator
sea

ASJC Scopus subject areas

  • Oceanography
  • Atmospheric Science
  • Ocean Engineering
  • Aquatic Science

Cite this

Demonstration of a new indicator for studying upwelling in the Northern South China Sea. / Lin, Li; Wang, You Shao; Sun, Cui Ci; Li, Nan; Wang, Haili; Mitchell, B. Greg; Wu, Mei Lin; Song, Hui; Wu, Jingfeng.

In: Oceanologia, Vol. 53, No. 2, 2011, p. 605-622.

Research output: Contribution to journalArticle

Lin, L, Wang, YS, Sun, CC, Li, N, Wang, H, Mitchell, BG, Wu, ML, Song, H & Wu, J 2011, 'Demonstration of a new indicator for studying upwelling in the Northern South China Sea', Oceanologia, vol. 53, no. 2, pp. 605-622. https://doi.org/10.5697/oc.53-2.605
Lin, Li ; Wang, You Shao ; Sun, Cui Ci ; Li, Nan ; Wang, Haili ; Mitchell, B. Greg ; Wu, Mei Lin ; Song, Hui ; Wu, Jingfeng. / Demonstration of a new indicator for studying upwelling in the Northern South China Sea. In: Oceanologia. 2011 ; Vol. 53, No. 2. pp. 605-622.
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