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Insolation and Upwelling in the Northeast Pacific during the Holocene: Quantifying the Link with Cd/Ca Ratios in Estuarine Foraminifera

Insolation and Upwelling in the Northeast Pacific during the Holocene: Quantifying the Link with Cd/Ca Ratios in Estuarine Foraminifera
全新世东北太平洋的日照和上升流:量化与河口有孔虫 Cd/Ca 比率的联系
批准号:
9402372
负责人:
Alexander van Geen
金额:
$22.6万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1994
资助国家:
美国
项目状态:
已结题
起止时间:
1994-08-15 至 1997-07-31

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中文摘要
翻译
PI将重建自上一个气候最佳期9 K.y.以来东北太平洋向赤道风强度变化的历史。前 这些数据将用于检验过去气候的大气环流模型,这些模型表明,由于北方半球夏季日照的下降,自上一次气候最佳期以来,有利于上升的风已经减弱。 有孔虫壳中溶解的镉浓度将被用作美国西北部洪堡湾和库斯湾河口核心上升流的代理。
英文摘要
PIs will reconstruct the history of changes in the intensity of equatorward winds over NE Pacific since the last climatic optimum 9 K.y. ago. These data will serve to test the general circulation models of the past climate that suggests that upwelling-favorable winds have weakened since the last climatic optimum due to decline in the summer insolation over northern Hemisphere. Dissolved cadmium concentrations in foraminiferal shells will be used as proxy for upwelling in core from estuaries in Humboldt and Coos Bays, NW United States.
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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:
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  • 依托单位:
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