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通过对南海北部和中部两套时间序列沉积物捕获器中的颗粒物样品进行硅藻分析,揭示了南海北部和中部硅藻通量的季节变化规律及其区域差异和各自对东亚季风气候的响应。研究表明在南海北部和中部海域,硅藻通量可以在一定程度上指示海洋初级生产力水平,其中南海北部硅藻通量明显低于中部,这可能与北部颗粒物样品采集期间发生的El Ni o事件有关;南海北部和中部硅藻通量均存在明显的季节性变化规律,其中东亚冬季风对南海北部海域硅藻的生长有着显著影响,而南海中部则受夏季西南季风的影响更为强烈;南海北部深层硅藻通量高于浅层,这表明南海北部可能存在较强的深层流作用。
The diatom analysis of particulate matter in two time series sediment traps in the northern and central South China Sea revealed the seasonal variation of diatoms flux in the northern and central South China Sea and their regional differences and their responses to the East Asian monsoon climate. The results show that in the northern and central South China Sea, diatom flux can indicate the level of marine primary productivity to a certain extent. The diatom flux in the northern South China Sea is obviously lower than that in the middle, which may be related to the El Ni o event . There were obvious seasonal variations of diatom fluxes in the northern and central South China Sea. The East Asian winter monsoon had a significant effect on the growth of diatoms in the northern South China Sea, while the central South China Sea was more strongly affected by the summer monsoon in the South China Sea. The South China Sea The flux of deep diatoms in the northern part is higher than that in the shallow ones, indicating that there may be a strong deep laminar flow in the northern South China Sea.