Seasonal and longitudinal variations in apparent deposition rates within an Arkansas reservoir1
Seasonal and longitudinal variations in apparent deposition rates within an Arkansas reservoir1
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阿肯色州水库内表观沉积率的季节性和纵向变化1
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
J. Nix
中科院分区：
文献类型：
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作者：
W. F. James;R. Kennedy;R. Montgomery;J. Nix
表观沉积物捕获率的季节和空间差异与阿肯色州德格雷湖水质纵向梯度的建立有关。在冬季和春季，由于高悬浮荷载，浊度梯度发展，主要集中在源头地区。异源有机碳和叶绿素a表观沉积的梯度也影响了碎屑加工和低通量溶解氧条件。由于溶解氧需要量大，源区溶解氧低耗竭从5月开始，到冬季缓慢向坝区扩散。这些模式表明，河流输入和沉积影响了湖泊纵向轴线上的生物活动。
Seasonal and spatial differences in apparent sediment trapping rates were related to the establishment of longitudinal gradients in water quality at DeGray Lake, Arkansas. Gradients in turbidity developed during winter and spring due to high suspended loads, which settled primarily in the headwater region. Gradients in apparent deposition of allochthonous organic carbon and chlorophyll a also influenced detrital processing and hypolimnetic dissolved oxygen conditions. Hypolimnetic dissolved oxygen depletion started in May in the headwater region, due to a high volumetric dissolved oxygen demand, and spread slowly to the dam by winter. These patterns indicated that riverine inputs and deposition influenced biological activity along the longitudinal axis of the lake.