Ages of River Plumes and Freshened Coastal Waters Using Ra-224 and Ra-223
使用 Ra-224 和 Ra-223 测定河流羽流的年龄和新鲜的沿海水域
基本信息
- 批准号:9314587
- 负责人:
- 金额:$ 34.15万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1993
- 资助国家:美国
- 起止时间:1993-12-01 至 1998-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
9314587 MOORE This research project will use short lived radium isotopes to determine the ages of freshened waters as these waters move and mix from the coastal zone into the open ocean. These techniques should enable marine scientists to tract the movement and mixing of coastal waters on time scales of a few days to several weeks. These studies will provide important information on the coupling between the coastal ocean and the ocean and the ocean interior. When combined with other studies, these techniques will enable oceanographers to assess fluxes of materials across the density gradient separating freshened coastal waters from the rest of the surface ocean. This work is based on a new measurement technique for short lived Ra isotopes, 224 Ra (half life = 3.6 days) and 223 Ra (half life = 11.4 days). Most of the effort will be devoted to technique development and verification initially. Field Studies will then determine (1) the rate at which the freshened river plume of the Mississippi River intrudes into the Gulf of Mexico and (2) the rate of mixing from near coastal waters across the inner and mid shelf region of the south Atlantic Bight.
9314587摩尔这个研究项目将使用寿命较短的镭同位素来确定淡水的年龄,因为这些海水从沿海地带移动并混合到公海中。这些技术应该使海洋科学家能够在几天到几周的时间尺度上追踪沿海水域的移动和混合。这些研究将提供关于沿海海洋和海洋以及海洋内部之间耦合的重要信息。当与其他研究相结合时,这些技术将使海洋学家能够评估将新鲜的沿海水域与其他表层海洋分开的密度梯度上的物质通量。这项工作是基于一种新的短寿命Ra同位素测量技术,224Ra(半衰期=3.6天)和223Ra(半衰期=11.4天)。最初,大部分工作将致力于技术开发和验证。然后,实地研究将确定(1)密西西比河新鲜的河流羽流侵入墨西哥湾的速度,以及(2)从近海岸水域穿过南大西洋海湾内陆架和中陆架地区的混合速度。
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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Willard Moore其他文献
Willard Moore的其他文献
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{{ truncateString('Willard Moore', 18)}}的其他基金
Collaborative Research: US GEOTRACES PMT: Sources and Rates of Trace Element and Isotope Cycling Derived from the Radium Quartet
合作研究:美国 GEOTRACES PMT:源自镭四重奏的微量元素和同位素循环的来源和速率
- 批准号:
1736321 - 财政年份:2018
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
Collaborative Research: GEOTRACES Arctic Section: Radium and Thorium Isotopes as Natural Geochemical Tracers in the Arctic Ocean
合作研究:GEOTRACES 北极部分:镭和钍同位素作为北冰洋的天然地球化学示踪剂
- 批准号:
1458424 - 财政年份:2015
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
Collaborative Research: US GEOTRACES Pacific Zonal Transect: Rates of supply, removal and internal cycling of trace elements and isotopes
合作研究:美国 GEOTRACES 太平洋地带横断面:微量元素和同位素的供应、去除和内部循环率
- 批准号:
1231211 - 财政年份:2012
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
Collaborative Research: GEOTRACES Atlantic Section: Trace Element Sources and Sinks Elucidated by Short-Lived Radium and Thorium Isotopes
合作研究:GEOTRACES 大西洋部分:短命镭和钍同位素阐明的微量元素源和汇
- 批准号:
0926559 - 财政年份:2010
- 资助金额:
$ 34.15万 - 项目类别:
Standard Grant
Collaborative Research: GEOTRACES: Intercalibration exercise for Radium Isotopes in seawater
合作研究:GEOTRACES:海水中镭同位素的相互校准练习
- 批准号:
0751867 - 财政年份:2008
- 资助金额:
$ 34.15万 - 项目类别:
Standard Grant
Collaborative Research: Chemistry of Groundwater Transport Pathways Associated with a Coastal Lagoon System
合作研究:与沿海泻湖系统相关的地下水输送路径的化学
- 批准号:
0233657 - 财政年份:2003
- 资助金额:
$ 34.15万 - 项目类别:
Standard Grant
The Impact of Subsurface Fluid Advection on Coastal Ocean Chemistry
地下流体平流对沿海海洋化学的影响
- 批准号:
9712298 - 财政年份:1997
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
Evaluating the Effects of High Particulate Fluxes on Chemical Processes Occurring at the Amazon River/Ocean Boundary
评估高颗粒通量对亚马逊河/海洋边界发生的化学过程的影响
- 批准号:
9116975 - 财政年份:1992
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
Chronology of Hydrothermal Vents, Juan de Fuca Ridge
胡安德富卡海岭热液喷口年代学
- 批准号:
9019300 - 财政年份:1991
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
Evaluating the Effects of High Particulate Fluxes on Chemi- cal Processes Occurring at the Amazon River/Ocean Boundary
评估高颗粒通量对亚马逊河/海洋边界发生的化学过程的影响
- 批准号:
8819579 - 财政年份:1989
- 资助金额:
$ 34.15万 - 项目类别:
Continuing Grant
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