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Turbulent Mixing, Internal Waves, and Intrusions: Effects on Resource Supply and Primary Productivity in Lakes

Turbulent Mixing, Internal Waves, and Intrusions: Effects on Resource Supply and Primary Productivity in Lakes
湍流混合、内波和入侵:对湖泊资源供应和初级生产力的影响
批准号:
0108572
负责人:
Sally MacIntyre
金额:
$44.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-08-01 至 2007-07-31

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中文摘要
翻译
混浊混合、内波和入侵:对湖泊资源供应和初级生产力的影响混浊涡流使浮游植物通过光的梯度循环,并将营养物质从湖深处提供到浮游植物生长的光线充足的部分。因此,湍流事件的频率和持续时间对控制浮游植物的生长速度起着重要的作用。湍流随冰冻后初始升温速率的不同、风的强迫和边界附近的不同而不同。由于这项研究深入研究了季节热量收支、河流流入、入侵、内波和湍流的时空变异性,并伴随着生物测量和实验,因此结果将提供一个独特的视角,了解物理过程在控制初级生产力方面的作用,并将能够更好地预测由于全球变暖和湖盆中的人类活动而导致的湖泊内变化。
英文摘要
Abstract0108572Sally MacIntyreTurbulent Mixing, Internal Waves, and Intrusions: Effects on Resource Supply and Primary Productivity in LakesTurbulent eddies circulate phytoplankton through a gradient of light and supply nutrients from deep in a lake to the well-lit portions where phytoplankton grow. Hence, the frequency and duration of turbulent events play an important role in governing the growth rates of phytoplankton. Turbulence varies as a function of differences in the initial rates of heating after iceoff, wind forcing, and proximity to boundaries. Because the study looks in depth at seasonal heat budgets, stream inflows, intrusions, internal waves, and temporal-spatial variability of turbulence, with concomitant biological measurements and experiments, results will provide a unique perspective on the role of physical processes in governing primary productivity and will allow better predictions of within lake changes due to global warming and human activities in lake basins.
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Circulation, Metabolism, and Greenhouse Gas Emissions from Arctic Lakes and Ponds
Circulation and Respiration in Ice-covered Arctic Lakes
Collaborative Research: Arctic to the Amazon: Physical Processes Controlling Gas Exchange from Freshwater Ecosystems.
Turbulent Mixing, Internal Waves, and Intrusions: Temporal and Spatial Variability of Resource Supply and Metabolic Activity in Lakes
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