Collaborative Research: Quantifying CO2 Fluxes Along the Himalayan Arc

合作研究:量化喜马拉雅弧沿线的二氧化碳通量

基本信息

  • 批准号:
    0850913
  • 负责人:
  • 金额:
    $ 10.99万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-09-01 至 2012-08-31
  • 项目状态:
    已结题

项目摘要

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Recent work by this team shows that geothermal springs in major river valleys near the Main Central Thrust zone of the Himalayan front are significant sources of carbon dioxide. To date we have shown that this source of CO2 exceeds the consumption of CO2 by chemical weathering in the large Narayani basin of central Nepal. Investigators have proposed that the source of this large CO2 flux is metamorphic decarbonation and decarboxylation reactions which take place in the subducted Lesser Himalyan sediments beneath the Himalayan front. In at least this region of the Himalaya, the net flux of CO2 from the carbonate-silicate cycle is strongly positive, in contrast to the widely held view that the Himalaya are an important CO2 sink.Investigators propose to address two issues: 1) they will sample fluids, gasses and precipitates from geothermal sites and use the combined δ 13C data from DIC, CO2(g), and travertine (CaCO3) to improve constraints on the extent of near-surface degassing. They believe that their current estimates are too low because of our previous inability to constrain this process in low δ13CDIC springs. Their hypothesis is that the extent of degassing in the low δ13CDIC geothermal systems is similar to what they have estimated in the high δ13CDIC springs, i.e. roughly 90%, and that the difference in isotopic composition is caused by different deep sources of CO2. Combined multi-phase δ13C data will allow them to quantitatively test this hypothesis. 2) They only have data from a 200 km-long section of the Himalaya, and it is unclear how representative their data from central Nepal are for the larger region. They hypothesize that geothermal fluxes of heat and CO2 vary with exhumation rate. They will test this hypothesis by developing a similar estimate of geothermal flux in the Sutlej valley of NW India, where thermochronometric data suggests exhumation rates about one half of those in central Nepal. Alternatively they may find that there is no particular relation, and that would suggest CO2 fluxes are more dependent on the overall rate of subduction or local variations in the lithology of sediments undergoing metamorphism in the appropriate P-T window. Regardless of the outcome, data from NW India will allow them to address the issue of along-strike heterogeneity of the CO2 flux in Himalayan geothermal systems and greatly improve estimates of the overall carbon balance.Scientific merit: the project addresses a major issue in the global carbon cycle: what is the relationship between major orogenic events and the silicate-carbonate cycle. The idea that Himalayan metamorphic fluxes offset or exceed weathering consumption of CO2 is novel and potentially transformative, as directly challenges a widely held paradigm in Earth Sciences.Broader impacts: this is a collaborative proposal between a major research university (Cornell) and an undergraduate institution (Wheaton College). They will involve undergraduate and graduate students extensively in the field and laboratory work. The project will provide outstanding opportunities for education and training between the two institutions and their international collaborators at the CRPG, France. They will also interact closely with a study program that combines US and Nepali students.
该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。该团队最近的工作表明,喜马拉雅前缘主要中央冲断带附近主要河流山谷的地热泉水是二氧化碳的重要来源。到目前为止,我们已经表明,在尼泊尔中部的大纳拉亚尼盆地,这种二氧化碳的来源超过了化学风化对二氧化碳的消耗。研究人员提出,这种大的二氧化碳通量的来源是在喜马拉雅前缘下方俯冲的小喜马拉雅沉积中发生的变质脱碳和脱羧化反应。至少在喜马拉雅的这一地区,碳酸盐-硅酸盐循环产生的二氧化碳净通量是非常正的,这与普遍认为喜马拉雅是一个重要的二氧化碳汇的观点相反。研究人员建议解决两个问题:1)他们将从地热地点采集流体、气体和沉淀物的样本,并使用DIC、CO2(G)和钙华(CaCO3)的联合13C数据来改善对近地表脱气程度的限制。他们认为,他们目前的估计太低了,因为我们之前无法将这一过程限制在低弹簧。他们的假设是,低地热系统中的脱气程度与他们在高温泉中估计的相似,即大约90%,而且同位素组成的差异是由不同的深层二氧化碳来源造成的。组合的多相13C数据将使他们能够定量检验这一假设。2)他们只有200公里长的喜马拉雅地区的数据,不清楚他们来自尼泊尔中部的数据对更大的地区有多大的代表性。他们假设热能和二氧化碳的地热通量随掘尸速度而变化。他们将通过对印度西北部萨特勒山谷的地热流量进行类似的估计来检验这一假设,那里的温度计时数据表明,挖掘遗骸的速度大约是尼泊尔中部的一半。或者,他们可能会发现两者之间没有特殊的关系,这表明二氧化碳通量更多地依赖于在适当的P-T窗口中经历变质作用的沉积物的整体俯冲速率或岩性的局部变化。无论结果如何,来自印度西北部的数据将使他们能够解决喜马拉雅地热系统中二氧化碳通量沿走向的不均一性问题,并极大地改善对整体碳平衡的估计。科学价值:该项目解决了全球碳循环中的一个主要问题:主要造山事件与硅酸盐-碳酸盐循环之间的关系。喜马拉雅变质通量抵消或超过二氧化碳风化消耗的想法是新颖的,也是潜在的变革性的,因为它直接挑战了地球科学中一个广泛接受的范式。广泛的影响:这是一个主要研究型大学(康奈尔大学)和一个本科生机构(惠顿学院)的合作提案。他们将让本科生和研究生广泛参与实地和实验室工作。该项目将为这两个机构及其在法国CRPG的国际合作伙伴之间的教育和培训提供绝佳的机会。他们还将与一个由美国和尼泊尔学生组成的学习项目密切互动。

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 }}

Matthew Evans其他文献

Spectral properties of cBCK-algebras
cBCK 代数的谱特性
  • DOI:
    10.1007/s00012-022-00779-0
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0.6
  • 作者:
    Matthew Evans
  • 通讯作者:
    Matthew Evans
New-onset movement disorder in the immediate postpartum period
产后不久新发的运动障碍
  • DOI:
    10.1136/bcr-2022-254132
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0.9
  • 作者:
    Sarah Wikeley;Imogen Bacon;Orene Greer;Matthew Evans;Rizwan Hasan;Sangeeta Pathak
  • 通讯作者:
    Sangeeta Pathak
Sa1817 – Fibrosis Constitutes Less Than 50% of the Total Volume in a Resected Fibrostenotic Stricture in Crohn's Disease
  • DOI:
    10.1016/s0016-5085(19)37884-9
  • 发表时间:
    2019-05-01
  • 期刊:
  • 影响因子:
  • 作者:
    Uday N. Shivaji;Matthew Evans;Tamsin Critchlow;Sean X. Gui;Samuel C. Smith;Marietta Iacucci;Subrata Ghosh;Rachel Cooney;Kassiani Skordilis
  • 通讯作者:
    Kassiani Skordilis
An overview of molecular testing in malignancies of the female genital tract
  • DOI:
    10.1016/j.mpdhp.2024.06.004
  • 发表时间:
    2024-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Matthew Evans
  • 通讯作者:
    Matthew Evans
Validation of Ethical COVID-19 Antibody Testing that Adheres to Pro-Life Principles
验证符合反堕胎原则的道德 COVID-19 抗体测试
  • DOI:
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kyle C. McKenna;M. Rohall;Daniel Kissinger;Matthew Evans;Elizabeth Wright;Evelyn Nick;Monica Calkins
  • 通讯作者:
    Monica Calkins

Matthew Evans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('Matthew Evans', 18)}}的其他基金

Launching the Cosmic Explorer Conceptual Design
推出宇宙探索者概念设计
  • 批准号:
    2309064
  • 财政年份:
    2023
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Continuing Grant
Collaborative research: The Evolutionary Genetics of Pollen-Pistil Incompatibility and Reproductive Isolation in Zea mays
合作研究:玉米花粉雌蕊不相容性和生殖隔离的进化遗传学
  • 批准号:
    1753707
  • 财政年份:
    2019
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
EAGER: Development of non-tissue culture based maize transformation
EAGER:开发基于非组织培养的玉米转化
  • 批准号:
    1824455
  • 财政年份:
    2018
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: The Next Generation of Gravitational Wave Detectors
合作研究:下一代引力波探测器
  • 批准号:
    1836814
  • 财政年份:
    2018
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Measuring Attometer-Scale Thermal Fluctuations in Optical Coatings for Applications in Gravitational Wave Detection
测量光学涂层中阿米级的热波动,用于引力波检测
  • 批准号:
    1705940
  • 财政年份:
    2017
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Genetic and Epigenetic Regulation of Gametophyte Development and Transposon Expression in Maize
玉米配子体发育和转座子表达的遗传和表观遗传调控
  • 批准号:
    1340050
  • 财政年份:
    2014
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Continuing Grant
Collaborative Research: Investigating the Influence of Sea-surface Variability on Ice Sheet Mass Balance and Outlet Glacier Behavior using Records from Disko Bugt, West Greenland
合作研究:利用西格陵兰迪斯科布格特的记录调查海面变化对冰盖质量平衡和出口冰川行为的影响
  • 批准号:
    1205008
  • 财政年份:
    2012
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
MRI: Acquisition of an Ion Chromatograph to Support Research and Undergraduate Education
MRI:购买离子色谱仪以支持研究和本科教育
  • 批准号:
    1126217
  • 财政年份:
    2011
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Pollen-pistil interactions and reproductive isolation in maize and teosinte
玉米和类蜀黍的花粉-雌蕊相互作用和生殖隔离
  • 批准号:
    0951259
  • 财政年份:
    2010
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Continuing Grant
Functional Genomics of Maize Gametophytes
玉米配子体的功能基因组学
  • 批准号:
    0701731
  • 财政年份:
    2007
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Continuing 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: Sediment and Stability: Quantifying the Effect of Moraine Building on Greenland Tidewater Glaciers
合作研究:沉积物和稳定性:量化冰碛建筑对格陵兰潮水冰川的影响
  • 批准号:
    2234522
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Sediment and Stability: Quantifying the Effect of Moraine Building on Greenland Tidewater Glaciers
合作研究:沉积物和稳定性:量化冰碛建筑对格陵兰潮水冰川的影响
  • 批准号:
    2234523
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Sediment and Stability: Quantifying the Effect of Moraine Building on Greenland Tidewater Glaciers
合作研究:沉积物和稳定性:量化冰碛建筑对格陵兰潮水冰川的影响
  • 批准号:
    2234524
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: BoCP-Implementation: Quantifying the response of biodiverse freshwater ecosystems to abrupt and progressive environmental change
合作研究:BoCP-实施:量化生物多样性淡水生态系统对突然和渐进的环境变化的响应
  • 批准号:
    2325895
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: BoCP-Implementation: Quantifying the response of biodiverse freshwater ecosystems to abrupt and progressive environmental change
合作研究:BoCP-实施:量化生物多样性淡水生态系统对突然和渐进的环境变化的响应
  • 批准号:
    2325892
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: BoCP-Implementation: Quantifying the response of biodiverse freshwater ecosystems to abrupt and progressive environmental change
合作研究:BoCP-实施:量化生物多样性淡水生态系统对突然和渐进的环境变化的响应
  • 批准号:
    2325891
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Sediment and Stability: Quantifying the Effect of Moraine Building on Greenland Tidewater Glaciers
合作研究:沉积物和稳定性:量化冰碛建筑对格陵兰潮水冰川的影响
  • 批准号:
    2234520
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: BoCP-Implementation: Quantifying the response of biodiverse freshwater ecosystems to abrupt and progressive environmental change
合作研究:BoCP-实施:量化生物多样性淡水生态系统对突然和渐进的环境变化的响应
  • 批准号:
    2325893
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
Collaborative Research: BoCP-Implementation: Quantifying the response of biodiverse freshwater ecosystems to abrupt and progressive environmental change
合作研究:BoCP-实施:量化生物多样性淡水生态系统对突然和渐进的环境变化的响应
  • 批准号:
    2325894
  • 财政年份:
    2024
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
COLLABORATIVE RESEARCH: Quantifying the effects of variable light and iron on the nitrate assimilation isotope effect of phytoplankton
合作研究:量化可变光和铁对浮游植物硝酸盐同化同位素效应的影响
  • 批准号:
    2333913
  • 财政年份:
    2023
  • 资助金额:
    $ 10.99万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了