Reactive Radionuclides as Indicators of New Production and Particle Transformations in the Equatorial Pacific Water Column: JGOFS
Reactive Radionuclides as Indicators of New Production and Particle Transformations in the Equatorial Pacific Water Column: JGOFS
批准号:
9023321
负责人:
J Kirk Cochran
金额:
$29.49万
依托单位:
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
项目状态:
已结题
起止时间:
1991-11-15 至 1995-10-31
中文摘要
私家侦探的建议,研究空间和时间的变化, 一组的分布和颗粒通量的 天然存在的放射性核素作为联合国的一部分 赤道太平洋全球海洋通量研究。 的 被测量的放射性核素作为海洋示踪剂, 地球化学速率的基本信息 控制生物质的生产和命运的过程 海洋水柱中的微粒 本研究设计 为了检验可溶性蛋白质的吸收和释放 化学物种的颗粒物,以及形成和 海洋水柱中颗粒聚集体的破坏 发生的速率在空间和时间上都不同, 对浮游生物生产率变化的反应 海洋表面和有机物质的流量离开 表层 数据将在上下文中进行解释 生物速率测量和其他数据的收集 在JGOFS内,并将用于测试地球化学模型。
英文摘要
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.
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批准号:2219285
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批准号:1736591
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批准号:0959524
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财政年份:2010
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Acquisition/upgrade of alpha spectrometry facility
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批准号:0850768
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财政年份:2009
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Collaborative Research on carbon cycling in the circum-Arctic flaw lead-polynya system: A radionuclide and molecular ecological approach
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批准号:0520213
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2005
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负责人:J Kirk Cochran
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依托单位:
Collaborative Research: Paleobiology, Paleoceanography and Paleoclimatology of a Time Slice through the Late Cretaceous Western Interior Seaway
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批准号:0309343
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项目类别:Standard Grant
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资助金额:$3.65万
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财政年份:2003
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依托单位:
Natural Radionuclides as Tracers of the Cycling and Fate of Particulate Organic Carbon on the Mackenzie Shelf: Participation in the Canadian Arctic Shelf Exchange Study(CASES)
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批准号:0136459
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项目类别:Continuing Grant
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资助金额:$33.81万
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财政年份:2002
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负责人:J Kirk Cochran
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依托单位:
U.S.-France Cooperative Research: Reconstructing Atmospheric Lead Sources of and Fluxes to Urban Coastal Areas
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批准号:9981488
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项目类别:Standard Grant
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资助金额:$1.89万
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财政年份:2000
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负责人:J Kirk Cochran
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依托单位:
Radionuclides as Tracers for the Source and Fate of Arctic Sea Ice Sediments.
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批准号:9979684
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项目类别:Standard Grant
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资助金额:$30.5万
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财政年份:1999
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负责人:J Kirk Cochran
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依托单位:
Geochemical Tracers in the Northwater Polynya
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批准号:9726153
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项目类别:Continuing Grant
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资助金额:$46.84万
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财政年份:1998
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负责人:J Kirk Cochran
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依托单位:
Acquisition of an Isotope Ratio Mass Spectrometer for Analyses of Aquatic, Geologic, and Atmospheric Sciences
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批准号:9601501
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项目类别:Standard Grant
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资助金额:$21.52万
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财政年份:1996
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负责人:J Kirk Cochran
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依托单位:
Thorium Isotopes as Indicators of Export Flux and Particle Dynamics in the Southern Ocean: Joint Global Ocean Flux Study
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批准号:9612761
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项目类别:Continuing Grant
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资助金额:$28.12万
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财政年份:1996
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负责人:J Kirk Cochran
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依托单位:
Flax Pond Laboratory: Enhancement of Seawater System
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批准号:9214534
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项目类别:Standard Grant
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资助金额:$11.5万
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财政年份:1993
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负责人:J Kirk Cochran
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依托单位:
Geochemical Tracers in the Northeast Water Polyna
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批准号:9113818
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项目类别:Continuing Grant
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资助金额:$61.47万
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财政年份:1991
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负责人:J Kirk Cochran
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依托单位:
Reactive Radionuclides in the Eastern North Atlantic: JointGlobal Flux Study
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批准号:9016832
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项目类别:Standard Grant
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资助金额:$11.25万
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财政年份:1991
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负责人:J Kirk Cochran
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依托单位:
Reactive Radionuclides in the Eastern North Atlantic, Joint Global Ocean Flux Study
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批准号:8819544
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项目类别:Continuing Grant
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资助金额:$27.95万
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财政年份:1989
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负责人:J Kirk Cochran
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依托单位:
The Geochemistry of Uranium in Marine Sediments and SedimentPore Waters
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批准号:8722766
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项目类别:Standard Grant
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资助金额:$4.3万
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财政年份:1988
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负责人:J Kirk Cochran
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依托单位:
Actinide Distributions in the Arctic and Northeast Atlantic Ocean
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批准号:8613844
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项目类别:Continuing Grant
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资助金额:$14.97万
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财政年份:1987
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负责人:J Kirk Cochran
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依托单位:
The Geochemistry of Uranium in Marine Sediments and SedimentPore Waters
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批准号:8516393
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项目类别:Continuing Grant
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资助金额:$15.24万
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财政年份:1985
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负责人:J Kirk Cochran
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依托单位:
Particle Mixing Rate Studies in Deep-Sea Sediments of the Eastern Equatorial Pacific (Manop Sites H, M, C, S and R)
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批准号:8400072
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项目类别:Continuing Grant
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资助金额:$11.06万
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财政年份:1984
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负责人:J Kirk Cochran
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依托单位:
海外基金