Ages of River Plumes and Freshened Coastal Waters Using Ra-224 and Ra-223
Ages of River Plumes and Freshened Coastal Waters Using Ra-224 and Ra-223
批准号:
9314587
负责人:
Willard Moore
金额:
$34.15万
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
项目状态:
已结题
起止时间:
1993-12-01 至 1998-05-31
中文摘要
9314587摩尔这个研究项目将使用短寿命的镭同位素来确定淡水的年龄,因为这些水从沿海地区移动和混合到公海。这些技术将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运动和混合。这些研究将为沿海海洋与海洋和海洋内部之间的耦合提供重要信息。当与其他研究相结合时,这些技术将使海洋学家能够评估物质在密度梯度上的通量,密度梯度将新鲜的沿海水域与其他表层海洋分开。这项工作是基于一种新的短寿命Ra同位素测量技术,224 Ra(半衰期= 3.6天)和223 Ra(半衰期= 11.4天)。最初的大部分工作将用于技术开发和验证。然后,实地研究将确定(1)密西西比河的淡水流侵入墨西哥湾的速度;(2)从近海岸水域穿过南大西洋湾的内部和中部大陆架区域的混合速度。
英文摘要
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.
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Collaborative Research: US GEOTRACES PMT: Sources and Rates of Trace Element and Isotope Cycling Derived from the Radium Quartet
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批准号:1736321
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项目类别:Continuing Grant
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资助金额:$11.3万
-
财政年份:2018
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负责人:Willard Moore
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依托单位:
Collaborative Research: GEOTRACES Arctic Section: Radium and Thorium Isotopes as Natural Geochemical Tracers in the Arctic Ocean
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批准号:1458424
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项目类别:Continuing Grant
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资助金额:$12.34万
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财政年份:2015
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负责人:Willard Moore
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依托单位:
Collaborative Research: US GEOTRACES Pacific Zonal Transect: Rates of supply, removal and internal cycling of trace elements and isotopes
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批准号:1231211
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项目类别:Continuing Grant
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资助金额:$8.73万
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财政年份:2012
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负责人:Willard Moore
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依托单位:
Collaborative Research: GEOTRACES Atlantic Section: Trace Element Sources and Sinks Elucidated by Short-Lived Radium and Thorium Isotopes
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批准号:0926559
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项目类别:Standard Grant
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资助金额:$8.05万
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财政年份:2010
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负责人:Willard Moore
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依托单位:
Collaborative Research: GEOTRACES: Intercalibration exercise for Radium Isotopes in seawater
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批准号:0751867
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项目类别:Standard Grant
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资助金额:$6.43万
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财政年份:2008
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负责人:Willard Moore
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依托单位:
Collaborative Research: Chemistry of Groundwater Transport Pathways Associated with a Coastal Lagoon System
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批准号:0233657
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2003
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负责人:Willard Moore
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依托单位:
The Impact of Subsurface Fluid Advection on Coastal Ocean Chemistry
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批准号:9712298
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项目类别:Continuing Grant
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资助金额:$45.57万
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财政年份:1997
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负责人:Willard Moore
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依托单位:
Evaluating the Effects of High Particulate Fluxes on Chemical Processes Occurring at the Amazon River/Ocean Boundary
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批准号:9116975
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项目类别:Continuing Grant
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资助金额:$7.22万
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财政年份:1992
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负责人:Willard Moore
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依托单位:
Chronology of Hydrothermal Vents, Juan de Fuca Ridge
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批准号:9019300
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项目类别:Continuing Grant
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资助金额:$33.47万
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财政年份:1991
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负责人:Willard Moore
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依托单位:
Evaluating the Effects of High Particulate Fluxes on Chemi- cal Processes Occurring at the Amazon River/Ocean Boundary
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批准号:8819579
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项目类别:Continuing Grant
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资助金额:$12.34万
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财政年份:1989
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负责人:Willard Moore
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依托单位:
Radiochemistry of the Black Sea and Eastern Mediterranean
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批准号:8614088
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项目类别:Continuing Grant
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资助金额:$22.08万
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财政年份:1987
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负责人:Willard Moore
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依托单位:
REU: Distribution of Ra-228 in Weddell Sea and South Atlantic Ocean
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批准号:8614039
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项目类别:Continuing Grant
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资助金额:$16.51万
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财政年份:1986
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负责人:Willard Moore
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依托单位:
The Terrestrial Flux of Radium to the Oceans
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批准号:8415964
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项目类别:Continuing Grant
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资助金额:$32.32万
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财政年份:1985
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负责人:Willard Moore
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依托单位:
Radiochemical Studies of Manop Sites
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批准号:8314982
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项目类别:Standard Grant
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资助金额:$13.05万
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财政年份:1984
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负责人:Willard Moore
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依托单位:
SFC Award (Indian Currency) For Geochemical Studies of the Ganges and Brahmaputra Rivers
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批准号:8218484
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项目类别:Standard Grant
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资助金额:$2.25万
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财政年份:1983
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负责人:Willard Moore
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依托单位:
Radiochemical Studies of Manganese Nodule Deposition Processes
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批准号:8217249
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项目类别:Standard Grant
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资助金额:$5.04万
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财政年份:1983
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负责人:Willard Moore
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依托单位:
Sfc Award (Indian Currency) For Guest Scientist in Geochemical Studies of the Ganges and Brahmaputra Rivers
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批准号:8117218
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项目类别:Standard Grant
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资助金额:$0.27万
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财政年份:1982
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负责人:Willard Moore
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依托单位:
Distribution of Radium-228 in the North Atlantic Ocean
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批准号:8216611
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项目类别:Continuing Grant
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资助金额:$15.49万
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财政年份:1982
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负责人:Willard Moore
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依托单位:
Radiochemical Studies of Manganese Nodule Deposition Processes
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批准号:8100038
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项目类别:Continuing Grant
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资助金额:$18.14万
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财政年份:1981
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负责人:Willard Moore
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依托单位:
Distribution of Radium-228 in the North Atlantic
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批准号:8019700
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项目类别:Continuing Grant
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资助金额:$10.19万
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财政年份:1980
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负责人:Willard Moore
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依托单位:
海外基金