Reactive Radionuclides in the Eastern North Atlantic, Joint Global Ocean Flux Study

该提案要求重新提供资金，以研究空间 一个系列的分布和颗粒通量的变化 自然产生的放射性核素， 作为北大西洋布卢姆联合实验的一部分， 全球海洋通量研究。 放射性核素 作为海洋示踪剂，可以产生基本的 关于地球化学过程速率的信息， 控制着活性化学物质的清除， 海洋水体中的生物颗粒。 这项研究是 旨在检验这一假设，即吸收和释放的 可溶性化学物种的颗粒物和形成 以及海水中颗粒聚集体的破坏 列发生率在空间和时间上都不同， 对浮游生物生产率变化的反应 海洋表面和有机物离开表面的通量 层. 数据将在以下背景下进行解释： 生物速率测量和其他数据， 在国际JGOFS计划中收集，并将用于 来测试地球化学模型 这项研究预计将 有助于更好地了解粒子通量， 海洋动力学，海洋生物广泛关注的问题， 化学、生物学和地质学。

This proposal requests renewed funding for a study of spatial variations in the distributions and particulate fluxes of a suite of naturally occurring radioactive nuclides, which was initiated as part of the North Atlantic Bloom Experiment of the Joint Global Ocean Flux Study (JGOFS). The radionuclides that are being measured serve as ocean tracers that can yield fundamental information about the rates of biogeochemical processes that govern the scavenging of reactive chemical species and the 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 that are being collected within the international JGOFS program and will be used to test biogeochemical models. This study is expected to contribute to a better understanding of particle fluxes and dynamics in the ocean, issues that are of broad concern to marine chemistry, biology and geology.