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SGER Project to Calibrate a Deep-Sea Paleothermometer

SGER Project to Calibrate a Deep-Sea Paleothermometer
SGER 项目校准深海古温度计
批准号：
9726090
负责人：
Paul Baker
金额：
$5.0万
依托单位：
Duke University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1997
资助国家：
美国
项目状态：
已结题
起止时间：
1997-09-01 至 1998-08-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9726090&HistoricalAwards=false
关键词：
SGERProjectCalibrateDeepSea

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This SGER award will support analysis of stable isotopes and Mg/Ca in shells of living ostracodes collected over a range of bottom water temperatures and saturation states, as well as specimens cultured under controlled conditions. The objective is to determine whether the Mg/Ca ratio is a reliable indicator of bottom-water temperature. If a tight correlation between Mg/Ca and temperature can be demonstrated, it can be applied to correct oxygen-isotope-based estimates, which are also affected by the volume of water incorporated in ice. Use of combined Mg/Ca and oxygen isotopes will then permit paleoceanographers to assess independently both global ice volume and local bottom water temperatures under changing climate conditions.
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  • 依托单位：
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