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首页> 外文期刊>Estuarine Coastal and Shelf Science >Temporal variability of optical properties in a shallow, eutrophic estuary: Seasonal and interannual variability
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Temporal variability of optical properties in a shallow, eutrophic estuary: Seasonal and interannual variability

机译：浅水富营养化河口光学特性的时间变化：季节性和年际变化

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摘要

We monitored inherent optical properties in a turbid, eutrophic estuary to determine the factors affecting the temporal variability in water clarity. Time series of absorption and scattering coefficients were measured at 1-h intervals for nearly 2 years. The seasonal pattern in weekly averaged absorption and scattering coefficients in each year was driven primarily by changes in the particulate matter of both biogenic and mineral origin. Temporal patterns in particulate absorption and scattering resulted from identifiable events that differed in relative magnitude between the 2 years: a spring bloom was followed by a transient "clear-water" phase, followed by increases in non-algal particulate matter to a late-summer maximum, and rapid declines of all parameters in late fall. Interannual variability in the spring bloom was governed by timing and magnitude of nutrient inputs from the watershed, while major patterns in summer variability of both organic and inorganic particulate matter appeared to follow the general cycle of biological activity in the system.
机译：我们在浑浊，富营养化的河口中监测了固有的光学性质，以确定影响水的透明度随时间变化的因素。吸收和散射系数的时间序列以1小时的间隔测量了近2年。每年每周平均吸收和散射系数的季节性模式主要是由生物和矿物来源的颗粒物的变化所驱动。颗粒物吸收和散射的时间模式是由可识别的事件造成的，这两个事件之间的相对大小有所不同：春季开花之后是短暂的“清水”阶段，随后非藻类颗粒物的数量增加到了夏末。最高值，并且所有参数在秋天后期迅速下降。春季开花的年际变化受流域养分输入的时间和幅度的控制，而有机和无机颗粒物的夏季变化的主要模式似乎遵循系统中生物活动的一般周期。

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