Application of 222Rn as a Tracer to Study Gas Hydrate Dynamics
Application of 222Rn as a Tracer to Study Gas Hydrate Dynamics
批准号:
9730817
负责人:
Douglas Hammond
金额:
$16.94万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1998
资助国家:
美国
项目状态:
已结题
起止时间:
1998-05-15 至 2002-04-30
中文摘要
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英文摘要
Abstract Hammond/Brewer Radon isotope Rn-222 is a tracer that may provide some insight into kinetics of hydrate formation and their characteristics. Little is know of the interaction of radon with methane. The work will focus of measurements in the lab on the ability of Rn-222 to be incorporated into methane hydrates as they form and its post-crystallization retention. The high-pressure apparatus of MBARI will be used. Cores and seep samples will be collected from the Cascadia margin and Eel River basin to measure naturally occurring Rn/CH4 ratios in hydrates. Local benthic flux measurements will characterize the carbon dynamics in the vicinity of the hydrates. The work will establish whether Rn can be used as a geochronometer.
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U.S. GEOTRACES Pacific Meridional Transect: Measurements of Actinium-227 to Trace Solute Transport
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批准号:1830168
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项目类别:Standard Grant
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资助金额:$13.88万
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财政年份:2018
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负责人:Douglas Hammond
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依托单位:
GEOTRACES Arctic Section: Actinium-227 as a Naturally-occurring Tracer of Dissolved Material Transport in the Arctic Ocean
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批准号:1436958
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项目类别:Standard Grant
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资助金额:$13.55万
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财政年份:2014
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负责人:Douglas Hammond
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依托单位:
GEOTRACES Pacific Section: 227Ac Distribution in Deep Waters as a Constraint on Mixing and Mass Transport of Solutes
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批准号:1235124
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项目类别:Standard Grant
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资助金额:$14.74万
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财政年份:2013
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负责人:Douglas Hammond
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依托单位:
Collaborative Research: Use of Triple Oxygen Isotopes and O2/Ar to constrain Net/Gross Oxygen Production during upwelling and non-upwelling periods in a Coastal Setting
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批准号:1260692
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项目类别:Standard Grant
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资助金额:$42.12万
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财政年份:2013
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负责人:Douglas Hammond
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依托单位:
Germanium Isotope Systematics in Marine Systems
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批准号:1061700
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项目类别:Standard Grant
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资助金额:$31.73万
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财政年份:2011
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负责人:Douglas Hammond
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依托单位:
COLLABORATIVE RESEARCH (USC-UW): Evaluating Seawater Circulation Rates Through Permeable Sediments, Using Naturally Occurring Rn and Ra Isotopes
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批准号:0623413
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项目类别:Standard Grant
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资助金额:$16.49万
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财政年份:2006
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负责人:Douglas Hammond
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依托单位:
Collaborative Research: Examination of the Potential Sources for the Mid-Water Silica Anomaly in the NE Pacific
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批准号:0452088
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项目类别:Standard Grant
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资助金额:$9.61万
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财政年份:2005
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负责人:Douglas Hammond
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依托单位:
Collaborative Research (OSU and USC): Evaluating the Utility of Germanium Isotopes as a Paleoproxy
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批准号:0326575
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项目类别:Standard Grant
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资助金额:$3.44万
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财政年份:2003
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负责人:Douglas Hammond
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依托单位:
The Use of 15NH3 to Estimate Fractionation of Nitrogen Isotopes during Diagenesis of Organic Matter
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批准号:0136500
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项目类别:Standard Grant
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资助金额:$20.18万
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财政年份:2002
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负责人:Douglas Hammond
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依托单位:
Collaborative Studies (USC and UM): Fractionation of Ge and Si during Diagenesis, and its Implications for Regulating the Oceanic Ge/Si Ratio
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批准号:9911608
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项目类别:Standard Grant
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资助金额:$17.6万
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财政年份:2000
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负责人:Douglas Hammond
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依托单位:
Collaborative Research: Benthic Flux and Early Diagenesis of Selected Trace Elements
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批准号:9616241
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项目类别:Continuing Grant
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资助金额:$4.82万
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财政年份:1996
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负责人:Douglas Hammond
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依托单位:
Benthic Fluxes of Biogeochemically Active Materials on the JGOFS Transect in the Central Equatorial Pacific
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批准号:9022406
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项目类别:Continuing Grant
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资助金额:$43.04万
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财政年份:1991
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负责人:Douglas Hammond
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依托单位:
The Use of U/Th Decay Series Radioisotopes to Estimate Rates of Water-Rock Exchange in the Coso Geothermal System
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批准号:8804735
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项目类别:Continuing Grant
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资助金额:$9.35万
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财政年份:1988
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负责人:Douglas Hammond
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依托单位:
In Situ Benthic Flux Measurements in the North Pacific Ocean
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批准号:8516297
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项目类别:Continuing Grant
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资助金额:$25.76万
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财政年份:1986
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负责人:Douglas Hammond
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依托单位:
Diagenetic Reactions and Transport of Carbon and Silica Across the Sediment-Water Interface in the Southern California Borderland
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批准号:8209249
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项目类别:Standard Grant
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资助金额:$19.55万
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财政年份:1982
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负责人:Douglas Hammond
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依托单位:
Migration Rates of Dissolved Species Across the Sediment-Water Interface
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批准号:7909412
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项目类别:Continuing Grant
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资助金额:$9.88万
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财政年份:1979
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负责人:Douglas Hammond
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依托单位:
Migration Rates of Dissolved Species Across the Sediment- Water Interface
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批准号:7681154
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项目类别:Standard Grant
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资助金额:$4.69万
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财政年份:1977
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负责人:Douglas Hammond
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依托单位:
国内基金
海外基金
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