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Suboxic Sediments and the Phosphate-Cadmium-Carbon Isotope Relation in the Ocean: Potential Decoupling Between Paleo-Nutrient Proxies

Suboxic Sediments and the Phosphate-Cadmium-Carbon Isotope Relation in the Ocean: Potential Decoupling Between Paleo-Nutrient Proxies
海洋中的含氧沉积物和磷酸盐-镉-碳同位素关系:古营养物代理之间的潜在脱钩
批准号:
9417038
负责人:
Alexander van Geen
金额:
$30.99万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1995
资助国家:
美国
项目状态:
已结题
起止时间:
1995-01-15 至 1997-12-31

项目摘要

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中文摘要
翻译
9417038 Van Geen这个项目将检验亚氧沉积物中Cd的积累增强的假设,这可能会改变全球海洋清单。Cd是用于推断深海营养物质含量的两种示踪剂之一,目前Cd的结果与另一种示踪剂13-C的结果不一致。确定差异的原因将使人们能够更准确地估计过去的海洋营养物质,这些营养物质与初级生产力有关,因此也与全球碳循环有关。***
英文摘要
9417038 van Geen This project will test the hypothesis that accumulation of Cd is enhanced in suboxic sediments, potentially altering the global oceanic inventory. Cd is one of two tracers used to infer nutrient content of the deep ocean, and at present results from Cd do not agree with those of the other tracer, 13-C. Determining the cause of the discrepancy will permit more accurate estimates of past ocean nutrients, which are related to primary production and therefore to the global carbon cycle. ***
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Collaborative Research: Informal risk-sharing and private initiative to mitigate local environmental risks
  • 批准号:
    1853289
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $31.97万
  • 财政年份:
    2019
  • 负责人:
    Alexander van Geen
  • 依托单位:
CNH: Competing Demands and Future Vulnerability of Groundwater: Drinking Water Quality and Food Security in Arsenic-Impacted South and Southeast Asia
  • 批准号:
    1414131
  • 项目类别:
    Standard Grant
  • 资助金额:
    $145.0万
  • 财政年份:
    2014
  • 负责人:
    Alexander van Geen
  • 依托单位:
Development of Freeze-Shoe Sampler to Recover Aquifer Sands with In-situ Groundwater From up to 1000-ft Depth
  • 批准号:
    1160753
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $57.56万
  • 财政年份:
    2013
  • 负责人:
    Alexander van Geen
  • 依托单位:
Workshop proposal: Recovering Uncompromised Samples of Aquifer Sands with In-Situ Groundwater from up to 300-m Depth in South and Southeast Asia
  • 批准号:
    1105148
  • 项目类别:
    Standard Grant
  • 资助金额:
    $2.0万
  • 财政年份:
    2011
  • 负责人:
    Alexander van Geen
  • 依托单位:
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