US-Norway Cooperative Research: Evaluation of Critical Depth Hypothesis for Phytoplankton in Polar Waters

美国-挪威合作研究：极地水域浮游植物临界深度假设的评估

• 批准号: 8900496
• 负责人: Osmund Holm-Hansen
• 金额: $ 0.7万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-15 至 1990-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8900496&HistoricalAwards=false
• 关键词: US; Norway; Cooperative; Research; Evaluation

This proposal on "Evaluation of Critical Depth Hypothesis for Phytoplankton in Polar Waters" between Dr. Osmund Holm-Hansen of the Institute of Marine Resources, Scripps Institute of Oceanography, University of California at San Diego, and Dr. Egil Sakshaug of the Biological Station, University of Trondheim, Norway, is sponsored by NSF. Dr. Holm-Hansen proposes to spend two months primarily analyzing data he and Dr. Sakshaug have acquired in numerous cruises in both polar regions during the past seven years, as well as data both have produced in the laboratory which is essential to interpreting their field data. Their computerized data bases consist of simultaneously acquired information on physical-biological-optical characteristics in vertical profiles in the upper 200 m of the water column. The investigators wish to model the dynamic interaction between growth and physiology of the phytoplankton and the mean irradiance to which the cells are exposed as influenced by vertical mixing processes. They shall interpret data within the general framework of the Critical Depth hypothesis first described by Sverdrup in 1953, expecting that their large data base should provide a more realistic formulation of this concept.

加州大学圣地亚哥分校海洋资源研究所、斯克里普斯海洋研究所的Osmund Holm-Hansen博士和挪威特隆赫姆大学生物站的Egil Sakshaug博士共同提出的“极地水域浮游植物临界深度假设评估”提案。由美国国家科学基金会赞助。霍尔姆-汉森博士建议花两个月的时间主要分析他和萨克肖博士在过去七年中在两极地区的多次巡航中获得的数据，以及他们在实验室产生的数据，这些数据对于解释他们的实地数据至关重要。他们的计算机化数据库包括同时获得的关于水柱上200米垂直剖面的物理-生物-光学特征的资料。研究人员希望建立浮游植物生长和生理与受垂直混合过程影响的细胞暴露的平均辐照度之间的动态相互作用模型。他们将在Sverdrup于1953年首次描述的临界深度假设的总体框架内解释数据，并期望他们的大型数据库能够为这一概念提供更现实的表述。