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High Resolution Reconstruction of Arabian Sea Denitrification and Its Forcing by Productivity and Hydrography

High Resolution Reconstruction of Arabian Sea Denitrification and Its Forcing by Productivity and Hydrography
阿拉伯海反硝化作用的高分辨率重建及其生产力和水文学的强迫
批准号：
9905612
负责人：
Mark Altabet
金额：
$28.2万
依托单位：
University of Massachusetts, Dartmouth
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：
1999-08-01 至 2003-07-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905612&HistoricalAwards=false
关键词：
ResolutionReconstructionArabianSeaDenitrification

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The ESH project will study the changes in denitrification of the Arabian Sea over the last glacial cycle at a resolution of a few hundred years. Both regional productivity and hydrographic conditions contribute to the suboxic intermediate waters necessary for denitrification. The project will study a set of cores from the Oman margin transecting the modern range of suboxic waters, concentrating on times of rapid global climate change. Variables to be analyzed include 15 N/14 N of sediment organic matter, carbon and oxygen isotopes of foraminiera, abundance of planktic foraminifera indicative of upwelling and of oxidation state of the intermediate waters, and Ba flux as a second measure of production.
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  • 批准号：
    --
  • 项目类别：
    --
  • 资助金额：
    40万元
  • 批准年份：
    2020
  • 负责人：
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  • 依托单位：
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