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Reconstruction of Glacial-Interglacial Changes in the Ocean's Carbonate Ion Content

Reconstruction of Glacial-Interglacial Changes in the Ocean's Carbonate Ion Content
重建海洋碳酸盐离子含量的冰期-间冰期变化
批准号:
0083314
负责人:
George Lohmann
金额:
$21.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2000
资助国家:
美国
项目状态:
已结题
起止时间:
2000-12-15 至 2003-11-30

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中文摘要
翻译
本研究将改进并使用方解石溶蚀的新指标来重建末次冰期-间冰期旋回期间大西洋、印度洋和太平洋中深度区域的垂直碳酸盐溶蚀梯度。新指标对有孔虫溶斜层上方和上方的溶解度敏感。关于碳酸盐离子含量和梯度的改进信息将对过去海洋碳收支的模式结果提供约束,从而验证模式对过去冰期-间冰期大气二氧化碳分压变化的推断。
英文摘要
This study will refine and use a new index of calcite dissolution to reconstruct vertical carbonate dissolution gradients through the mid-depth regions of the Atlantic, Indian, and Pacific Oceans over the last glacial - interglacial cycle. The new index is sensitive to dissolution above and across the foraminifer lysocline. The improved information on carbonate ion content and gradients will provide constraints on model results of past oceanic carbon budgets and thus test model inferences about past atmospheric pCO2 changes during glacial-interglacial cycles.
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Collaborative Research: Incorporation and Preservation of Magnesium in Planktonic Foraminifera: Implications for Mg-Paleothermometry and Calcite Solubility
  • 批准号:
    9987060
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $15.81万
  • 财政年份:
    2000
  • 负责人:
    George Lohmann
  • 依托单位:
Collaborative Research: Past Deep-Sea Carbonate Ion Concentrations as Constraints on Scenarios Purporting to Explain Quaternary Atmospheric CO2 Changes
  • 批准号:
    0081957
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $3.57万
  • 财政年份:
    2000
  • 负责人:
    George Lohmann
  • 依托单位:
Effects of Shell Calcification Depth on Benthic-Planktonic 14C/C
  • 批准号:
    9416863
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $12.44万
  • 财政年份:
    1994
  • 负责人:
    George Lohmann
  • 依托单位:
Chemistry and Morphology of Secondary Calcification of Deep-Living Planktic Forminifera
  • 批准号:
    9301722
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $40.21万
  • 财政年份:
    1993
  • 负责人:
    George Lohmann
  • 依托单位:
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