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首页> 美国卫生研究院文献>Scientific Reports >Elevated particulate organic carbon export flux induced by internal waves in the oligotrophic northern South China Sea
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Elevated particulate organic carbon export flux induced by internal waves in the oligotrophic northern South China Sea

机译：南海贫营养化北部内波引起的颗粒状有机碳出口通量升高

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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.
机译：为了了解南海北部深海盆地（NSCS）对内波的生物地球化学响应，在大型内波通过的过程中，首次使用了带有水文特征的漂移沉积物捕集器，定量了颗粒有机碳（POC）的出口通量。传感器。结果表明，在内部波浪传播期间和之后，温度，硝酸盐和叶绿素a（Chl a）的浓度存在很大差异，这表明在内部波浪包裹通过期间和之后，营养丰富的冷水可能会进入耗散区的富营养区，导致浮游植物繁盛。最重要的是，与非内部波区域相比，内部波后POC出口通量（110.9±10.7 mg C m −2 d −1 ）显着增强（32.6–73.0在NSCS中为mg C m -2 d -1 ）。此类上升的POC通量可能是由内部波触发的向下繁荣的生物颗粒，颗粒聚集或来自混合层的会聚颗粒引起的。

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