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Title: Elevated particulate organic carbon export flux induced by internal waves in the oligotrophic northern South China Sea
Authors: Dewang Li
Wen-Chen Chou
Yung-Yen Shih
Guan-Yu Chen
Yi Chang
Chun Hoe Chow
Tsang-Yuh Lin
Chin-Chang Hung
Contributors: 國立臺灣海洋大學:海洋環境與生態研究所
Date: 2018-02
Issue Date: 2018-09-25T07:41:32Z
Publisher: Scientific Reports
Abstract: Abstract: To understand the biogeochemical response to internal waves in the deep basin of the northern South China Sea (NSCS), particulate organic carbon (POC) export fluxes were quantified for the first time during the passage of large internal waves using drifting sediment traps attached with hydrographic sensors. Results revealed large variations in temperature, nitrate and chlorophyll a (Chl a) concentrations during and after internal waves, suggesting that cold nutrient-replete waters may be brought to the euphotic zone in the dissipation zone during and after the passage of internal wave packets, resulted in phytoplankton flourished. Most importantly, POC export fluxes (110.9 ± 10.7 mg C m−2 d−1) were significantly enhanced after internal waves compared to non-internal wave area (32.6–73.0 mg C m−2 d−1) in the NSCS. Such elevated POC fluxes may be induced by downward flourished biogenic particles, particle aggregation or converged particles from mixed layer triggered by internal waves.
Relation: 8
Appears in Collections:[Institute of Marine Environment and Ecology] Periodical Articles

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