Decade Time Scale Variability of Radiocarbon, and the CO2 Cycle in the Eastern Tropical Pacific Using Banded Corals
Decade Time Scale Variability of Radiocarbon, and the CO2 Cycle in the Eastern Tropical Pacific Using Banded Corals
批准号:
0137207
负责人:
Ellen Druffel
金额:
$53.89万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2002
资助国家:
美国
项目状态:
已结题
起止时间:
2002-04-15 至 2006-03-31
中文摘要
摘要-0137207在这项研究中,位于欧文的加州大学的研究人员将对来自加拉帕戈斯群岛的珊瑚的年波段中的放射性碳(14 C)进行高精度测量,以了解公元1600年至1950年间从热带太平洋到大气的二氧化碳通量的变化。 放射性碳测量将通过加速器质谱仪进行。 锶/钙比和氧同位素组成(18 O)的测量将确定上升引起的海洋表面温度变化所产生的珊瑚14 C的变化。 研究人员预计,这项研究将记录热带太平洋的二氧化碳循环在人类时间尺度上的变化。
英文摘要
ABSTRACTOCE-0137207In this study, researchers at the University of California at Irvine will make high-precision measurements of radiocarbon (14C) in annual bands in corals from the Galapagos Islands in order to understand the variability of carbon dioxide fluxes from the tropical Pacific Ocean to the atmosphere between AD 1600 and 1950. The radiocarbon measurements will be made by accelerator mass spectrometry. Measurements of the strontium/calcium ratio and the oxygen isotopic composition (18O) will be made to identify changes in coralline 14C arising from upwelling-induced changes in sea surface temperature. The investigators expect that this study will yield a record of how the CO2 cycle in the tropical Pacific has changed on human time scales.
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Radiocarbon Investigations of Dissolved and Particulate Organic Carbon Cycling in the North Pacific and Antarctic Oceans
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GRT in Geosciences and Environmental Physical Sciences - An Interdisciplinary Effort Between the Program of Earth System Science and the Chemistry Department at UC Irvine
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Radiocarbon Studies of Dissolved and Particulate Organic Carbon in the Eastern North Pacific and Amazon Plume Regions
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Investigation of Past Variations In Surface Ocean Radiocarbon During The Holocene
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Radiocarbon Studies of Dissolved and Particulate Organic Carbon in the Eastern North Pacific and Amazon Plume Regions
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