Collaborative Research: U.S. GEOTRACES Arctic Section: Thorium-230, Thorium-232, and Protactinium-231 tracers of trace element supply and removal.
合作研究:美国 GEOTRACES 北极部分:Thorium-230、Thorium-232 和 Protactinium-231 微量元素供应和清除示踪剂。
基本信息
- 批准号:1434479
- 负责人:
- 金额:$ 54.2万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-01-01 至 2019-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In support of the 2015 U.S.GEOTRACES Arctic expedition, this project will focus on the fate and distributions of naturally-occurring radioisotopes in the Arctic Ocean. Such information is useful for understanding why other chemical substances, both natural and man-made, occur where they do in the ocean. Like other national initiatives involved in the International GEOTRACES Program, the goals of this U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes (TEI) in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. Working at sea alongside a multi-institutional team of ocean trace element experts, investigators on this project will define regions of unusually high rates of TEI removal, anticipated to be located near basin margins and near the sea floor. By combining their measurements of naturally-occurring thorium and protactinium with TEI data collected by other participating investigators, they expect to be able to translate these rates into information that can be applied to other TEIs. Like most other participating investigators, this group will include graduate students as part of the research team and will participate in a variety of public educational outreach activities for Alaskan communities.This study will undertake measurements of the dissolved and particulate concentrations of 230Th and 231Pa, two isotopes designated as key or critical to the success of the GEOTRACES program. Additionally the team will measure dissolved and particulate 232Th concentrations and analyze a limited number of aerosol samples, aerosol leachates, sea ice, melt pond water and surface sediments for these radionuclides. The work plan will be broken down into five tasks geared to: (1) determine the rates of boundary scavenging of 231Pa and 230Th associated with the particle-rich waters near the southern margin of the Canada Basin; (2) determine the rates of bottom scavenging of 231Pa and 230Th associated with nepheloid layers that are prevalent in the Arctic Ocean; (3) assess the contribution to scavenging in the Canada basin by MnO2-coated particles, formed during early diagenesis in organic-rich sediments surrounding the Arctic Ocean; (4) determine the rate of supply of lithogenic 232Th from margin sediments using information derived from 230Th; and (5) determine the rate of supply of lithogenic 232Th from sea ice, including the aerosols and ice-rafted sediments that they transport, by the combined study of 232Th and 230Th. The proposed work fulfills core scientific objectives defined in the U.S. GEOTRACES Arctic Implementation Plan.
为了支持2015年美国GEOTRACES北极考察,该项目将重点关注北冰洋天然放射性同位素的命运和分布。 这些信息有助于理解为什么其他化学物质,无论是天然的还是人造的,都会出现在海洋中。与其他参与国际GEOTRACES计划的国家计划一样,这次美国北极考察的目标是确定控制海洋中关键微量元素和同位素(TEI)分布的过程和量化通量,并确定这些分布对环境条件变化的敏感性。 该项目的研究人员与一个由海洋微量元素专家组成的多机构团队一起在海上工作,将确定TEI去除率异常高的区域,预计这些区域将位于盆地边缘和海底附近。 通过将他们对天然存在的钍和钚的测量与其他参与研究者收集的TEI数据相结合,他们希望能够将这些速率转化为可应用于其他TEI的信息。像大多数其他参与的研究人员,这个小组将包括研究生作为研究团队的一部分,并将参加各种公共教育推广活动,为阿拉斯加communities.This study will carry the dissolved and particulate concentrations of 230 Th and 231 Pa,two isotopes designed as key or critical to the success of the GEOTRACES program.此外,该小组将测量溶解和颗粒232 Th浓度,并分析数量有限的气溶胶样品,气溶胶沥滤物,海冰,融化的池塘水和表面沉积物中的这些放射性核素。 该工作计划将分为五项任务:(1)确定与加拿大海盆南缘附近富含颗粒物的沃茨有关的231 Pa和230 Th的边界清除率;(2)确定与北冰洋普遍存在的霞状层有关的231 Pa和230 Th的底部清除率;(3)评估北冰洋周围富含有机质的沉积物中在早期成岩作用期间形成的MnO_2包覆颗粒对加拿大海盆的清除作用的贡献:(4)利用~(230)Th的信息确定边缘沉积物中成岩~(232)Th的供应速率;(5)通过~(232)Th和~(230)Th的联合研究,确定了海冰(包括其输送的气溶胶和冰筏沉积物)对成岩~(232)Th的供给速率。 拟议的工作实现了美国GEOTRACES北极实施计划中定义的核心科学目标。
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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Robert Anderson其他文献
Stability of intact chorionic gonadotropin (hCG) in serum, liquid whole blood, and dried whole-blood filter-paper spots: impact on screening for Down syndrome by measurement of free beta-hCG subunit.
血清、液体全血和干燥全血滤纸斑点中完整绒毛膜促性腺激素 (hCG) 的稳定性:通过测量游离 β-hCG 亚基对唐氏综合症筛查的影响。
- DOI:
- 发表时间:
1993 - 期刊:
- 影响因子:9.3
- 作者:
K. Spencer;J. Macri;P. Carpenter;Robert Anderson;D. Krantz - 通讯作者:
D. Krantz
Enhanced immune protection by a liposome-encapsulated recombinant respiratory syncytial virus (RSV) vaccine using immunogenic lipids from Deinococcus radiodurans.
使用来自耐辐射奇球菌的免疫原性脂质,通过脂质体封装的重组呼吸道合胞病毒 (RSV) 疫苗增强免疫保护。
- DOI:
- 发表时间:
2002 - 期刊:
- 影响因子:5.5
- 作者:
Yan Y. Huang;Robert Anderson - 通讯作者:
Robert Anderson
Elective hospital admissions: secondary data analysis and modelling with an emphasis on policies to moderate growth
选择性入院:二次数据分析和建模,重点是适度增长的政策
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
M. Chalkley;B. Mccormick;Robert Anderson;M. Aragón;Nazma Nessa;C. Nicodemo;Stuart Redding;R. Wittenberg - 通讯作者:
R. Wittenberg
Regulation of airway eosinophil and neutrophil infiltration by alpha-galactosylceramide in a mouse model for respiratory syncytial virus (RSV) vaccine-augmented disease.
在呼吸道合胞病毒(RSV)疫苗增强性疾病的小鼠模型中,α-半乳糖神经酰胺对气道嗜酸性粒细胞和中性粒细胞浸润的调节。
- DOI:
10.1016/j.vaccine.2007.08.062 - 发表时间:
2007 - 期刊:
- 影响因子:5.5
- 作者:
A. Benoit;Yan Huang;Santi Maneewatchararangsri;P. Tapchaisri;Robert Anderson - 通讯作者:
Robert Anderson
Equilibrium and Social Norms
均衡和社会规范
- DOI:
- 发表时间:
2024 - 期刊:
- 影响因子:0
- 作者:
Robert Anderson;Haosui Duanmu - 通讯作者:
Haosui Duanmu
Robert Anderson的其他文献
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{{ truncateString('Robert Anderson', 18)}}的其他基金
Support for the U.S. GEOTRACES Project Office
对美国 GEOTRACES 项目办公室的支持
- 批准号:
2219888 - 财政年份:2022
- 资助金额:
$ 54.2万 - 项目类别:
Continuing Grant
Collaborative Research: Management and Implementation of US GEOTRACES GP17 Section: Amundsen Sea Sector of the Antarctic Continental Margin (GP17-ANT)
合作研究:美国GEOTRACES GP17部分的管理和实施:南极大陆边缘阿蒙森海段(GP17-ANT)
- 批准号:
2023363 - 财政年份:2021
- 资助金额:
$ 54.2万 - 项目类别:
Standard Grant
Collaborative Research: U.S. GEOTRACES GP17-OCE and GP17-ANT: Thorium-230, Thorium-232 and Protactinium-231 as tracers of trace element supply and removal
合作研究:美国GEOTRACES GP17-OCE和GP17-ANT:Thorium-230、Thorium-232和Protactinium-231作为微量元素供应和去除的示踪剂
- 批准号:
2049204 - 财政年份:2021
- 资助金额:
$ 54.2万 - 项目类别:
Continuing Grant
Predicting mammalian communities in Mesoamerican 'sky islands' using species traits and spatiotemporal patterns of environmental suitability
利用物种特征和环境适宜性的时空模式预测中美洲“天空岛屿”的哺乳动物群落
- 批准号:
2002202 - 财政年份:2020
- 资助金额:
$ 54.2万 - 项目类别:
Standard Grant
Support for the U. S. GEOTRACES Project Office
对美国 GEOTRACES 项目办公室的支持
- 批准号:
1829563 - 财政年份:2018
- 资助金额:
$ 54.2万 - 项目类别:
Continuing Grant
Collaborative Research: US GEOTRACES Pacific Meridional Transect: Sources and Sinks of Neodymium Isotopes and Rare Earth Elements
合作研究:美国 GEOTRACES 太平洋经线横断面:钕同位素和稀土元素的源和汇
- 批准号:
1737318 - 财政年份:2017
- 资助金额:
$ 54.2万 - 项目类别:
Standard Grant
Collaborative Research: U.S. GEOTRACES Pacific Meridional Transect: Thorium-232, Thorium-231 and Protactinium-231 as tracers of trace element supply and removal
合作研究:美国 GEOTRACES 太平洋经线横断面:Thorium-232、Thorium-231 和 Protactinium-231 作为微量元素供应和去除的示踪剂
- 批准号:
1737224 - 财政年份:2017
- 资助金额:
$ 54.2万 - 项目类别:
Continuing Grant
ABI Innovation: Wallace: a flexible platform for reproducible modeling of species niches and distributions built for community expansion
ABI 创新:Wallace:一个灵活的平台,用于为社区扩展而构建的物种生态位和分布的可重复建模
- 批准号:
1661510 - 财政年份:2017
- 资助金额:
$ 54.2万 - 项目类别:
Standard Grant
Water Mass Structure and Bottom Water Formation in the Ice-age Southern Ocean
冰期南大洋的水团结构和底层水的形成
- 批准号:
1542962 - 财政年份:2016
- 资助金额:
$ 54.2万 - 项目类别:
Standard Grant
EAGER: Making code-based analyses widely accessible for modeling species niches and distributions
EAGER:使基于代码的分析能够广泛用于建模物种生态位和分布
- 批准号:
1650241 - 财政年份:2016
- 资助金额:
$ 54.2万 - 项目类别:
Standard Grant
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