Studies of Nitrogen and Carbon Biogeochemistry during SOFex
Studies of Nitrogen and Carbon Biogeochemistry during SOFex
批准号:
9986061
负责人:
Mark Altabet
金额:
$17.5万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-06-01 至 2003-05-31
中文摘要
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英文摘要
ABSTRACTOCE-9986061Researchers at the University of Massachusetts at Dartmouth will participate in an larger expedition to the Southern Ocean (SOFeX) in austral summer of 2001-2002 to study the effects of mesoscale fertilization of the water column with iron. Specifically, these investigators will study the response of stable nitrogen and carbon isotope cycling to iron fertilization. Their goal is to use these isotopes as tracers to first determine the magnitude and mechanisms of nitrogen isotopic fractionation in response to an episodic iron input and thus to predict what kind of paleoceanographic signal would be generated (and preserved in the underlying sediments). Secondly, they will assess the feasibility of using stable isotopes of nitrogen and carbon as in situ transient tracers of nitrogen and carbon transfers in these open-water mesoscale perturbation experiments.
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海外基金