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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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中文摘要
翻译
ESH项目将以几百年的分辨率研究阿拉伯海在上一个冰期的反硝化变化。区域生产力和水文条件都有助于形成反硝化所必需的缺氧中间水。该项目将研究阿曼边缘的一组岩心，这些岩心横切了现代亚氧水域的范围，重点研究全球气候快速变化的时期。需要分析的变量包括沉积物有机质的15 N/14 N、有孔虫的碳和氧同位素、指示上升流和中间水域氧化状态的浮游有孔虫丰度，以及作为第二种生产措施的Ba通量。
英文摘要
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：
    南方科技大学
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