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在海上测量期间,观测到几次浮游植物大量繁殖过程,每次分别持续8—18d,叶绿素含量分别升高约3—10倍。由于浮游植物大量繁殖,光束衰减系数随叶绿素a含量升高而增大。谱分析的结果表明,光束衰减系数与叶绿素a含量的时间序列有较好的相干性,其相干系数在0.6—1.0之间。在此基础上,讨论了生物-光学变异性与海洋物理过程的关系。结果表明,混合层深度及水温等物理参数的变化是导致生物-光学特性在数十天时域尺度上变化的重要因素。
During the sea survey, the phytoplankton multiplication process was observed several times, each lasting for 8-18 days, and the chlorophyll content increased about 3-10 times respectively. As phytoplankton multiply, the beam attenuation coefficient increases with increasing chlorophyll-a content. The results of spectral analysis show that there is a good coherence between the beam attenuation coefficient and the time series of chlorophyll a content, and its coherence coefficient is between 0.6 and 1.0. On this basis, the relationship between biological-optical variability and ocean physical processes is discussed. The results show that the change of the physical parameters such as the depth of the mixed layer and the temperature of the water is an important factor that leads to the change of the bio-optical properties on the time scale of several dozen days.