Collaborative Research: Examination of the Potential Sources for the Mid-Water Silica Anomaly in the NE Pacific
合作研究:检查东北太平洋中层水体二氧化硅异常的潜在来源
基本信息
- 批准号:0452565
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-03-15 至 2010-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
ABSTRACTOCE-0452565 / OCE-0452088Previous studies have shown that the North Pacific contains the highest deep-water concentrations of dissolved silica in the world ocean, and Cascadia Basin appears to be the source region for this global-scale anomaly. Data compilations indicate that a .plume. of dissolved silica originates from within this small marginal Basin, which can be traced for several thousand miles, from an origin in the NE Pacific to the Hawaiian Ridge in the south and almost to Siberia in the west. Box model calculations based on compiled data in the area indicate that the North Pacific deep-water silica anomaly requires a flux from Cascadia Basin of nearly 2 Tmols/year to sustain the observed concentration levels. If correct, this dissolved silica flux is an astonishing 40% of the total riverine silica input to the oceans, but this interpretation requires substantial verification. Although there are several identified sources for dissolved silica within the Basin, including ridge-axis vent fields, ridge-flank hydrothermal circulation, compression of sediments at the accretionary wedge and the upward diffusive flux from sediment pore waters, none of these processes, either individually or in aggregate, appear to be adequate to produce the observed deep-water silica anomaly. In this study, researchers at the University of Washington and the University of Southern California will conduct a field program to provide the required spatial distribution of CTD and Niskin/nutrient measurements needed to construct a reasonable silica inventory and geostrophic bottom water flux. They plan to (a) compile all existing CTD/nutrient data from Cascadia Basin, which is substantial in number, but limited in location, (b) add new data from cruises-of-opportunity in 2004, (c) map the geographic distribution and inventory of deep-water silica with 40 new hydrocast profiles from areas not sampled by existing data, (d) use the new data to determine the basin-scale pattern of bottom water circulation and (e) determine the Ge/Si ratios of the bottom water, to distinguish biological from geological source regions. The primary goals of the program are to quantify the flux of dissolved silica into the Basin and identify the source regions that are responsible.Broader Impacts: Large ocean-going field programs at UW support graduate and undergraduate students in their academic research, allow participation of additional non- Oceanography students from UW and from other institutions on the cruises, acquire data for student theses, and provide substantial out-reach in public awareness about scientific research. Further, although Cascadia Basin was poorly sampled by WOCE, the few data collected suggest a disproportionate role for this small basin in determining properties of the entire Pacific Deep Water.
以前的研究表明,北太平洋含有世界海洋中最高的溶解二氧化硅深水浓度,卡斯卡迪亚盆地似乎是这种全球尺度异常的源区。 数据汇编表明,一个. plume。溶解二氧化硅的主要来源是这个小的边缘盆地,可以追溯到几千英里,从东北太平洋的起源到南部的夏威夷海脊,几乎到西部的西伯利亚。 根据该地区汇编的数据进行的箱形模型计算表明,北太平洋深水二氧化硅异常需要卡斯卡迪亚盆地近2 Tmols/年的通量才能维持观测到的浓度水平。 如果正确的话,这种溶解的二氧化硅通量是流入海洋的河流二氧化硅总量的40%,但这种解释需要大量的验证。 虽然海盆内有几个已查明的溶解二氧化硅来源,包括脊轴喷口区、脊翼热液循环、增生楔处沉积物的压缩和沉积物孔隙沃茨的向上扩散通量,但这些过程无论是单独的还是总体的,似乎都不足以产生所观察到的深水二氧化硅异常。在这项研究中,华盛顿大学和南加州大学的研究人员将进行一项实地计划,以提供所需的CTD和Niskin/营养测量的空间分布,以构建一个合理的二氧化硅库存和地转底层水通量。他们计划(a)汇编卡斯卡迪亚盆地的所有现有CTD/养分数据,该盆地数量很多,但位置有限,(B)在2004年增加机会巡航的新数据,(c)绘制深水二氧化硅的地理分布和存量图,其中包括现有数据未取样地区的40个新的水力铸造剖面图,(d)利用新数据确定盆地尺度的底层水循环模式;(e)确定底层水的Ge/Si比率,以区分生物源区和地质源区。该计划的主要目标是量化进入盆地的溶解二氧化硅通量,并确定负责的源区。华盛顿大学的大型远洋实地项目支持研究生和本科生的学术研究,允许来自华盛顿大学和其他机构的其他非海洋学学生参加游轮,为学生论文获取数据,并为公众提供关于科学研究的大量宣传。此外,虽然世界海洋环流实验对卡斯卡迪亚盆地的取样很少,但收集到的少量数据表明,这个小盆地在决定整个太平洋深水的性质方面发挥了不成比例的作用。
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)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Harlan Johnson其他文献
Harlan Johnson的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Harlan Johnson', 18)}}的其他基金
Methane Venting from Forearc Faults in the Puget Sound Estuary
普吉特湾河口弧前断层的甲烷排放
- 批准号:
2221821 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Discriminating slow slip earthquakes and sediment gravity flows from oceanographic signals: the Alaska Amphibious Community Seismic Experiment
从海洋信号中区分慢滑地震和沉积物重力流:阿拉斯加两栖社区地震实验
- 批准号:
1951071 - 财政年份:2020
- 资助金额:
-- - 项目类别:
Standard Grant
EAGER: Bubble Plume Emissions from Fault Zones within the Puget Sound Forearc
EAGER:普吉特湾前弧内断层带的气泡羽流排放
- 批准号:
1945975 - 财政年份:2019
- 资助金额:
-- - 项目类别:
Standard Grant
A proposed study of the dynamics of the Hikurangi New Zealand margin.
拟对希库朗吉新西兰边缘的动态进行研究。
- 批准号:
1753660 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Standard Grant
Remotely Triggered Slope Failures and Turbidity Currents on the Cascadia Margin
卡斯卡迪亚边缘远程触发的斜坡破坏和浊流
- 批准号:
1634095 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Standard Grant
RAPID: Collaborative Research: A Short, Open-Access 2D MCS Acquisition Program off Washington State
RAPID:协作研究:华盛顿州附近的一个简短的、开放获取的 2D MCS 采集项目
- 批准号:
1147841 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Standard Grant
Thermal Structure of the Cascadia Subduction Zone on the Washington Margin
华盛顿边缘卡斯卡迪亚俯冲带的热结构
- 批准号:
1144164 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Constraining Sub-surface Fluid Circulation at the RAVEN Hydrothermal Field, Endeavour Ridge: An in situ Geophysical Experiment and Numerical Modeling Study
合作研究:约束 RAVEN 热液田的地下流体循环,奋进海脊:原位地球物理实验和数值模拟研究
- 批准号:
1037870 - 财政年份:2010
- 资助金额:
-- - 项目类别:
Continuing Grant
SGER - Final Processing and Publication of Conductive Heat Flow Data from the Endeavour Hydrothermal Field, Juan de Fuca Ridge
SGER - 来自胡安德富卡海岭奋进热液田的传导热流数据的最终处理和发布
- 批准号:
0902626 - 财政年份:2008
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Direct Sampling of the Oceanic Sub-Surface Biosphere at Old and Young Seamounts
合作研究:老海山和新海山海洋地下生物圈的直接采样
- 批准号:
0085615 - 财政年份:2000
- 资助金额:
-- - 项目类别:
Standard Grant
相似国自然基金
Research on Quantum Field Theory without a Lagrangian Description
- 批准号:24ZR1403900
- 批准年份:2024
- 资助金额:0.0 万元
- 项目类别:省市级项目
Cell Research
- 批准号:31224802
- 批准年份:2012
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Cell Research
- 批准号:31024804
- 批准年份:2010
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Cell Research (细胞研究)
- 批准号:30824808
- 批准年份:2008
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Research on the Rapid Growth Mechanism of KDP Crystal
- 批准号:10774081
- 批准年份:2007
- 资助金额:45.0 万元
- 项目类别:面上项目
相似海外基金
Collaborative Research: FW-HTF-RL: Collaborative Remote Physical Examination: Transforming Medical and Nursing Practice
协作研究:FW-HTF-RL:协作远程体检:改变医疗和护理实践
- 批准号:
2326454 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: FW-HTF-RL: Collaborative Remote Physical Examination: Transforming Medical and Nursing Practice
协作研究:FW-HTF-RL:协作远程体检:改变医疗和护理实践
- 批准号:
2326455 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: FW-HTF-RL: Collaborative Remote Physical Examination: Transforming Medical and Nursing Practice
协作研究:FW-HTF-RL:协作远程体检:改变医疗和护理实践
- 批准号:
2326453 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: An archaeological examination of the cultural and ecological consequences of colonialism
合作研究:殖民主义文化和生态后果的考古学检验
- 批准号:
2150875 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: An archaeological examination of the cultural and ecological consequences of colonialism
合作研究:殖民主义文化和生态后果的考古学检验
- 批准号:
2150876 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: An archaeological examination of the cultural and ecological consequences of colonialism
合作研究:殖民主义文化和生态后果的考古学检验
- 批准号:
2150874 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Experimental and Computational Examination of Biomimetic Peptides Acting as Anti-freeze Molecules
合作研究:仿生肽作为抗冻分子的实验和计算检验
- 批准号:
2203527 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Experimental and Computational Examination of Biomimetic Peptides Acting as Anti-freeze Molecules
合作研究:仿生肽作为抗冻分子的实验和计算检验
- 批准号:
2203526 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research RUI: Examination of the Effect of Templating Agents on the Size, Shape and Chiral Recognition of Bifurcated Amino Acid Based Amphiphilic Molecular Assemblies
合作研究 RUI:检查模板剂对基于分叉氨基酸的两亲性分子组装体的尺寸、形状和手性识别的影响
- 批准号:
2203652 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research RUI: Examination of the Effect of Templating Agents on the Size, Shape and Chiral Recognition of Bifurcated Amino Acid Based Amphiphilic Molecular Assemblies
合作研究 RUI:检查模板剂对基于分叉氨基酸的两亲性分子组装体的尺寸、形状和手性识别的影响
- 批准号:
2203506 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Standard Grant