Collaborative Research: Alkenone-specific Hydrogen Isotopic Assessment of Surface Water Salinity During the Black Sea's Holocene Evolution
合作研究:黑海全新世演化过程中地表水盐度的烯酮特异性氢同位素评估
基本信息
- 批准号:0602097
- 负责人:
- 金额:$ 8.05万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2006
- 资助国家:美国
- 起止时间:2006-07-01 至 2009-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Abstract (0601910)COLLABORATIVE RESEARCH: Laboratory Validation of Alkenone-Specific Hydrogen Isotopic Composition as a Robust, Quantitative Proxy for Paleosalinity DeterminationF.G. Prahl (Oregon State University) and B.N. Popp (University of Hawaii)Knowledge of past ocean salinity and temperature is essential for assessment of basic oceanographic processes such as surface water circulation and deep water formation. Such processes are integral to the redistribution of heat on the Earths surface and consequently to the dynamics of global climate change. In this project, the PIs propose to conduct calibration experiments on a novel paleosalinity indicator, the compound specific hydrogen isotopic (D/H) composition of unique biomarker molecules that are biosynthesized by the phytoplankton species Emiliania huxleyi and Isochrysis galbana. The central hypothesis is that the D/H of such biomarkers is controlled fundamentally by the isotopic composition of the water in which the source organism grows. Here, the D/H of compounds biosynthesized in batch culture experiments under varying laboratory-controlled experimental conditions will be analyzed in order to evaluate the extent that D/H values can vary as a function of physiological growth factors such as nutrient and light availability and actual salinity change as well as between species. The laboratory results from this proxy will then be used to examine the Holocene evolution of the Black Sea to determine whether a salinity threshold impacted phytoplankton ecology of surface waters and caused the well-documented mid-Holocene shift in the depositional characteristics of Black Sea sediments. Results of these experiments will be integrated directly into classroom teaching, allowing transfer of cutting edge, topical information to undergraduate science and non-science majors and to graduate students specializing in oceanography and geology. An undergraduate student from the Honors College at Oregon State University will benefit educationally from this project. The University of Hawaii is a designated EPSCoR institution and a federally recognized minority-serving institution, thus students from underrepresented groups are likely to be benefit from education activities stemming from the results of this research.
摘要(0601910)合作研究:实验室验证炔酮特异性氢同位素组成作为古盐度测定的可靠定量代理[j]。Prahl(俄勒冈州立大学)和B.N. Popp(夏威夷大学):了解过去的海洋盐度和温度对于评估基本的海洋学过程(如地表水循环和深水形成)是必不可少的。这些过程是地球表面热量再分配的组成部分,因此也是全球气候变化的动态组成部分。在本项目中,pi建议对一种新的古盐度指标进行校准实验,即由浮游植物Emiliania huxleyi和Isochrysis galbana生物合成的独特生物标志物分子的化合物比氢同位素(D/H)组成。核心假设是,这些生物标志物的D/H基本上是由来源生物生长的水的同位素组成控制的。在这里,我们将分析在不同实验室控制的实验条件下分批培养实验中合成的化合物的D/H值,以评估D/H值随生理生长因子(如养分和光照有效性以及实际盐度变化)以及物种之间的变化程度。该代理的实验室结果随后将用于检查黑海的全新世演化,以确定盐度阈值是否影响了地表水的浮游植物生态,并导致黑海沉积物沉积特征中有充分记录的全新世转变。这些实验的结果将直接整合到课堂教学中,允许将前沿的、热门的信息传递给理科生和非理科生,以及专攻海洋学和地质学的研究生。俄勒冈州立大学荣誉学院的一名本科生将从该项目中受益。夏威夷大学是EPSCoR指定机构,也是联邦政府认可的少数族裔服务机构,因此,来自代表性不足群体的学生可能会从这项研究结果所产生的教育活动中受益。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Brian Popp其他文献
Brian Popp的其他文献
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{{ truncateString('Brian Popp', 18)}}的其他基金
Equipment: MRI: Track 1 Acquisition of a Stable Isotope Mass Spectrometer for Earth and Ocean Science Research
设备: MRI:轨道 1 采购用于地球和海洋科学研究的稳定同位素质谱仪
- 批准号:
2320391 - 财政年份:2023
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
Regioselective [2+2+2] Cyclotrimerizations
区域选择性 [2 2 2] 环三聚化
- 批准号:
2154773 - 财政年份:2022
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
Collaborative Research: Isotopic Indicators for Mechanisms of Organic Matter Degradation under High Productivity and High Carbon Flux Conditions (EXPORTS)
合作研究:高生产率和高碳通量条件下有机物降解机制的同位素指标(出口)
- 批准号:
2124416 - 财政年份:2021
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
REU Site: Research in Chemistry at West Virginia University
REU 网站:西弗吉尼亚大学化学研究
- 批准号:
1852369 - 财政年份:2019
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
CAREER: Reductive Carboxylation of Unsaturated Hydrocarbons
职业:不饱和烃的还原羧化
- 批准号:
1752986 - 财政年份:2018
- 资助金额:
$ 8.05万 - 项目类别:
Continuing Grant
Collaborative Research: Isotopic Indicators for Mechanisms of Organic Matter Degradation in the Northeast Pacific (EXPORTS)
合作研究:东北太平洋有机物降解机制的同位素指标(出口)
- 批准号:
1829425 - 财政年份:2018
- 资助金额:
$ 8.05万 - 项目类别:
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Collaborative Research: Chemoautotrophy in Antarctic Bacterioplankton Communities Supported by the Oxidation of Urea-derived Nitrogen
合作研究:尿素氮氧化支持的南极浮游细菌群落的化能自养
- 批准号:
1643345 - 财政年份:2017
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
Collaborative Research: Direct Oxidation of Organic Nitrogen by Marine Ammonia Oxidizing Organisms
合作研究:海洋氨氧化生物直接氧化有机氮
- 批准号:
1537995 - 财政年份:2015
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry
合作研究:海洋食物网中汞的同位素见解及其如何随海洋生物地球化学变化
- 批准号:
1433846 - 财政年份:2014
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
Collaborative Research: The role of sponges in the coastal nitrogen cycle
合作研究:海绵在沿海氮循环中的作用
- 批准号:
1129260 - 财政年份:2011
- 资助金额:
$ 8.05万 - 项目类别:
Standard Grant
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