Reactive Radionuclides as Indicators of New Production and Particle Transformations in the Equatorial Pacific Water Column: JGOFS

反应性放射性核素作为赤道太平洋水柱中新产生和粒子转变的指标：JGOFS

• 批准号: 9023321
• 负责人: J Kirk Cochran
• 金额: $ 29.49万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-11-15 至 1995-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9023321&HistoricalAwards=false
• 关键词: Reactive; Radionuclides; Indicators; New; Production

The P.I.'s propose to study spatial and temporal variations in the distributions and particulate fluxes of a suite of naturally occurring radioactive nuclides as part of the Joint Global Ocean Flux Study (JGOFS) in the equatorial Pacific. The radionuclides to be measured serve as ocean tracers that yield fundamental information about the rates of biogeochemical processes that govern the production and fate of biogenic particles in the oceanic water column. The study is designed to test the hypothesis that the uptake and release of soluble chemical species by particulate matter, and the formation and destruction of particle aggregates in the oceanic water column occur at rates that vary both spatially and temporally in response to variations in the rate of plankton production at the sea surface and the flux of organic matter leaving the surface layer. The data will be interpreted within the context of biological rate measurements and other data to be collected within JGOFS and will be used to test biogeochemical models.

作为赤道太平洋联合全球海洋通量研究 (JGOFS) 的一部分，PI 提议研究一组自然产生的放射性核素的分布和颗粒通量的时空变化。 待测量的放射性核素作为海洋示踪剂，产生有关生物地球化学过程速率的基本信息，这些过程控制着海洋水体中生物颗粒的产生和命运。 该研究旨在检验以下假设：颗粒物质对可溶性化学物质的吸收和释放，以及海洋水体中颗粒聚集体的形成和破坏，其发生速率在空间和时间上都发生变化，以响应海面浮游生物生产速率和离开表层的有机物质通量的变化。 这些数据将在生物率测量和 JGOFS 内收集的其他数据的背景下进行解释，并将用于测试生物地球化学模型。