文章基本信息

标题：Modeling and tracer release experiment on forced buoyant plume convection from coastal oxygenation
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作者：Jørgen Bendtsen ; Karin E. Gustafsson ; Jouni Lehtoranta 等
期刊名称：Boreal Environment Research
印刷版ISSN：1239-6095
出版年度：2013
卷号：18
期号：1
页码：37-52
语种：English
出版社：Finnish Limnological Society
摘要：Mechanical oxygenation has been suggested as means of reducing unwanted effects from hypoxia but the near-field dynamics and thereby the potential impact from large scale applications is poorly understood. We present results from a field experiment and model study where the dynamics close to an oxygenator in a shallow coastal area in the Gulf of Finland were studied. The oxygenator created a buoyant plume by pumping surface water through a pipe into the bottom water at a rate of about 1 m3 s–1. A passive tracer (rhodamine) was added to the inlet of the pump and its lateral spreading was subsequently observed in a relatively thin layer below the pycnocline. The dispersion of rhodamine was applied to parameterize the entrainment rate in a plume model and the total outflow was increased by a factor of about 7. A sensitivity study with different pump rates and cross flow velocities were analysed.