LGM and Deglacial Radiocarbon from U-series Dated Drake Passage Deep-sea Corals
LGM and Deglacial Radiocarbon from U-series Dated Drake Passage Deep-sea Corals
批准号:
0902957
负责人:
Laura Robinson
金额:
$20.57万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2009
资助国家:
美国
项目状态:
已结题
起止时间:
2009-06-01 至 2011-05-31
中文摘要
点击翻译按钮获取中文摘要
英文摘要
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The proposal seeks funds to continue a follow-up analytical work of deep-sea corals collected in the Drake Passage during a research cruise. The project's goal is paleo-climate research looking to constrain the depth structure and time evolution of the radiocarbon content of the Southern Ocean during the glacial and deglaciation. Radiocarbon is a versatile tracer of past climate; its radioactive decay provides an internal clock with which to assess the rates of processes, and it can be used to trace the movement of carbon through the Earth's system. It enters the ocean through air-sea gas exchange, so processes that limits this will, therefore, reduce the radiocarbon content of both surface and deep waters. The Southern Ocean is a critical location for exchange of heat and carbon between the deep-ocean and atmospheric reservoirs, and the deep waters formed there fill large volumes of the global deep and intermediate oceans. As strong currents tend to scour away sediments, carbonate preservation is limited, and radiocarbon reservoir ages are poorly constrained, many traditional paleoceanographic techniques become impractical. It is proposed to alleviate these difficulties analyzing the chemical composition of deep-sea coral skeletons. Their aragonitic skeletons can be precisely dated using U-series decay, and when coupled with radiocarbon analyses will allow to calculate the C14/C12 ratio of the past water column.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
A deep-sea perspective on coral resilience in a changing world
-
批准号:NE/X00127X/1
-
项目类别:Research Grant
-
资助金额:$81.76万
-
财政年份:2023
-
负责人:Laura Robinson
-
依托单位:
Carbon cycling in a warming world: a deglacial test case
-
批准号:NE/S001743/1
-
项目类别:Research Grant
-
资助金额:$96.01万
-
财政年份:2019
-
负责人:Laura Robinson
-
依托单位:
Deep sea corals in the South Atlantic: new insights from an interdisciplinary study
-
批准号:NE/R005117/1
-
项目类别:Research Grant
-
资助金额:$5.11万
-
财政年份:2018
-
负责人:Laura Robinson
-
依托单位:
Bridging the timing gap: connecting Southern Ocean and Antarctic Climate records
-
批准号:NE/N003861/1
-
项目类别:Research Grant
-
资助金额:$52.85万
-
财政年份:2015
-
负责人:Laura Robinson
-
依托单位:
Collaborative Research: U.S. GEOTRACES North Atlantic Section: Analysis of 230Th, 232Th and 231Pa
-
批准号:0926860
-
项目类别:Continuing Grant
-
资助金额:$38.15万
-
财政年份:2010
-
负责人:Laura Robinson
-
依托单位:
Testing the Silicic Acid Leakage Hypothesis: A Study of Opal in the Atlantic
-
批准号:1029986
-
项目类别:Standard Grant
-
资助金额:$24.62万
-
财政年份:2010
-
负责人:Laura Robinson
-
依托单位:
Collaborative Research: Historic Perspectives on Climate and Biogeography from Deep-sea Corals in the Drake Passage
-
批准号:0944474
-
项目类别:Standard Grant
-
资助金额:$14.72万
-
财政年份:2010
-
负责人:Laura Robinson
-
依托单位:
Improving the Accuracy of U-Th Coral Dating: A Test of Diagenetic Pathways, Models, and Effects
-
批准号:0819714
-
项目类别:Continuing Grant
-
资助金额:$42.0万
-
财政年份:2009
-
负责人:Laura Robinson
-
依托单位:
Glacial Radiocarbon Constraints from Drake Passage Deep-Sea Corals
-
批准号:0636787
-
项目类别:Standard Grant
-
资助金额:$0.0万
-
财政年份:2007
-
负责人:Laura Robinson
-
依托单位:
Collaborative Research: Paired Neodymium Isotope and Radiocarbon Analyses in Deep-Sea Corals - Calibration of a Novel Ocean Ventilation Tracer
-
批准号:0622872
-
项目类别:Continuing Grant
-
资助金额:$0.0万
-
财政年份:2006
-
负责人:Laura Robinson
-
依托单位:
海外基金