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Holocene Climate Variation and Thermohaline Circulation in the Atlantic

Holocene Climate Variation and Thermohaline Circulation in the Atlantic
全新世气候变化与大西洋温盐环流
批准号:
9905605
负责人:
William Curry
金额:
$49.57万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-10-01 至 2004-03-31

项目摘要

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中文摘要
翻译
这一ESH项目将检验一个假设,即全新世期间北大西洋的千禧年降温事件是由热带经向热量输送减少引起的。巴哈马和巴西边缘的高聚集率沉积岩心跨越温跃层深度(400-1000m),将每隔250年分析底栖和浮游有孔虫的碳和氧同位素组成,重点是海底18O数据。这些地点的高纬度地表水冷却和低纬度温跃层变暖之间的时间相关性将支持这一假说。
英文摘要
This ESH project will test the hypothesis that millenial cooling events in the North Atlantic during the Holocene are caused by reduced meridional heat transport from the tropics. High0accumulation-rate sediment cores from the Bahamas and the Brazil margin spanning thermocline depths (400-1000 m) will be analyzed at 250-year intervals for C and O isotopic composition of benthic and planktic foraminifera, with emphasis on the benthic 18 O data. A temporal correlation between high-latitude, surface water cooling and low-latitude, thermocline warming at these sites will support the hypothesis.
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Sea Ice and Planktonic Foraminifera in the Arctic: Productivity and Geochemistry
  • 批准号:
    0902707
  • 项目类别:
    Standard Grant
  • 资助金额:
    $30.98万
  • 财政年份:
    2009
  • 负责人:
    William Curry
  • 依托单位:
Inverse Modeling of the Glacial Atlantic: An Expanded Tracer Data Set
  • 批准号:
    0725965
  • 项目类别:
    Standard Grant
  • 资助金额:
    $25.08万
  • 财政年份:
    2007
  • 负责人:
    William Curry
  • 依托单位:
Seafloor Samples Laboratory
  • 批准号:
    0723307
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $61.14万
  • 财政年份:
    2007
  • 负责人:
    William Curry
  • 依托单位:
Collaborative Research: A SIMS and ICP-MS Calibration of Benthic Foraminiferal Elemental Chemistry
  • 批准号:
    0550271
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $31.47万
  • 财政年份:
    2006
  • 负责人:
    William Curry
  • 依托单位:
海外基金