| 项目编号: | 1548160
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| 项目名称: | EAGER: Deglacial Chronology of Bermuda Rise |
| 作者: | Lloyd Keigwin
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| 承担单位: | Woods Hole Oceanographic Institution
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| 批准年: | 2014
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| 开始日期: | 2015-08-01
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| 结束日期: | 2016-07-31
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| 资助金额: | USD97781
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | northeast bermuda rise
; chronology
; eager program
; new chronology
; project
; bermuda rise core
; bermuda rise
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| 英文摘要: | This award uses funds, under the auspices of the EArly-concept Grants for Exploratory Research (EAGER) program, for a project aimed at examining the causes and significance of perplexing inconsistencies in radiocarbon dates coming from 20,000 year old deep water sediments at the northeast Bermuda Rise.
The deep, northeast Bermuda Rise is a classical location for study of climate over the last glacial cycle because of its high deposition rates and good preservation of foraminifera. Since it is also contains one of the deepest records of climate change and Bermuda Rise cores have been studied for over 30 years, it has become a standard reference section for climate history. Hence, getting the radiocarbon dating right is critical to calibrating time in this region and, perhaps, elsewhere if the inconsistencies in age dating are systemic and not simply local.
The research activities fit well into the potentially transformative, high risk, and exploratory nature of the EAGER programs because it is hypothesized that results from this project will show that sediments on the seafloor can be "unmixed" by dating every sample. If this hypothesis is rejected, the resulting chronology will nevertheless be an improvement on the present situation, where important results are waiting for an improved age model before they can be published. If the hypothesis is accepted, however, the new chronology could inspire new research on this and other locations in the western North Atlantic.
The cores from the Bermuda Rise targeted for this project would be a valuable resource for future researchers as they will have internally consistent stratigraphies and chronologies and future proxies for ocean and climate change will be linked in a common temporal and sedimentological framework. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93829
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Lloyd Keigwin. EAGER: Deglacial Chronology of Bermuda Rise. 2014-01-01.
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