Details

Autor(en) / Beteiligte

• Lin, Li
• Wang, You-Shao
• Sun, Cui-Ci
• Li, Nan
• Wang, Haili
• Mitchell, B. Greg
• Wu, Mei-Lin
• Song, Hui
• Wu, Jing-Feng

Titel

Demonstration of a new indicator for studying upwelling in the northern South China SeaThis research was supported by the projects of knowledge innovation program of the Chinese Academy of Sciences (No. KZCX2-YW-Q07-02, No. KSCX2-SW-132 and No. KSCX2-YW-Z-1024), the National Natural Science Foundation of China (41076070) and the National 908 project (No. 908-02-04-04)

Ist Teil von

• Oceanologia, 2011-06, Vol.53 (2), p.605,614e,614-613,614e,622

Ort / Verlag

Elsevier Urban & Partner Sp. z o.o

Erscheinungsjahr

2011

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In order to demonstrate that silicate (SiO3-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 SiO3-Si. The spatial distribution of silicate from the surface to 200m depth clearly showed the upwelling regions, which is also supported by satellite observations of sea surface temperature.