Collaborative Research: A Combined Observational and Theoretical Investigation of Thermal and Chemical Transport Subduction Zones, and the Evolution of Active Convergent...

合作研究:热和化学输运俯冲带的联合观测和理论研究,以及活跃汇聚的演化......

基本信息

  • 批准号:
    9219434
  • 负责人:
  • 金额:
    $ 31.55万
  • 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:
    1993-09-01 至 1998-02-28
  • 项目状态:
    已结题

项目摘要

9219434 Sacks The role of subduction and magmatism in the growth of the continental crust and the evolution of the crust/mantle system has long been recognized, but a detailed, process-oriented under- standing of the subduction cycle has been elusive. In this project the principal investigators will combine experimental petrology and geochemistry, observational seismology, isotope and trace element geochemistry and laboratory convection experiments with numerical approaches to the thermal structure and large-scale convection of the slab and mantle wedge, and porous flow models for melt and fluid migration in the arc environment. Heat flow and various analyses of seismic data, from primarily the Japan arc, will constrain the thermal structure and rheological properties used in the initial calculations (2-D and some 3-D) of flow in the slab and mantle, using a temperature-dependent viscosity. Models developed for Japan, where seismic constraints are strongest, will be used as a base for Central America and for the Cascades, where a young hot plate is subducting and conditions are far from steady state. Models for transport of hydrous fluids in the vicinity of the slab, and of melts through the mantle will be calculated using the stress and flow fields from the thermal and convection modeling. Plate scale mass transport delivers chemical elements derived from the continental crust, hydrosphere and lithosphere to the deep source of arc magmas; fluid and melt transport processes translate some fraction of these elements back to the surface in crust building magmas. Documentably slab-derived elements such as 10Be (1.5 Ma half-life), B and U (75 ka half-life in disequilibria series) will be incorporated as chemical tracers in fluid/melt migration models, with fluxes, transport paths and characteristic transport times constrained from chemistry of subconducting sediments and erupting lavas. Fluid partitioning studies on key elements will further const rain input to migration models. Predictions from coupled thermal, convection and transport models regarding spatial distribution, character and chemistry of lavas along the length and across the width of arcs will be compared with observed values, and evaluated against observed variations in subduction parameters from arc to arc to arrive at an integrated model of the subduction cycle and its role in crustal growth and evolution of the mantle. ***
俯冲和岩浆作用在大陆地壳生长和壳幔系统演化中的作用早已被认识到,但对俯冲旋回的详细的、以过程为导向的认识一直是难以实现的。本项目将结合实验岩石地球化学、观测地震学、同位素和微量元素地球化学以及室内对流实验,采用数值方法研究板块和地幔楔的热结构和大尺度对流,并建立弧环境中熔体和流体运移的多孔流动模型。热流和对地震数据的各种分析,主要来自日本弧,将限制热结构和流变特性,这些特性用于使用依赖温度的粘度对板块和地幔流动进行初始计算(二维和一些三维)。为地震约束最强的日本开发的模型将被用作中美洲和喀斯喀特山脉的基础,喀斯喀特山脉的年轻热板块正在俯冲,条件远未达到稳定状态。利用热模拟和对流模拟得到的应力场和流场,计算了地幔附近含水流体和熔体的输运模型。板块尺度的物质搬运将源自大陆地壳、水圈和岩石圈的化学元素输送到弧岩浆的深层源区;流体和熔体的运输过程将这些元素的一部分在地壳形成的岩浆中转移回地表。有证据表明,10Be (1.5 Ma半衰期)、B和U(不平衡系列中75 ka半衰期)等板源元素将作为化学示踪剂纳入流体/熔体迁移模型,其通量、传输路径和特征传输时间受亚传导沉积物和喷发熔岩的化学性质的限制。关键要素的流体分配研究将进一步将降雨输入约束到迁移模型中。将热、对流和输运耦合模型关于沿弧长和弧宽的空间分布、熔岩特征和化学的预测与观测值进行比较,并根据观测到的各弧之间俯冲参数的变化进行评估,从而得出俯冲旋回及其在地壳生长和地幔演化中的作用的综合模型。***

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 }}

I. Selwyn Sacks其他文献

Mass variations in response to magmatic stress changes at Soufrière Hills Volcano, Montserrat (W.I.): Insights from 4-D gravity data
  • DOI:
    10.1016/j.epsl.2009.12.004
  • 发表时间:
    2010-02-15
  • 期刊:
  • 影响因子:
  • 作者:
    Stefanie Hautmann;Joachim Gottsmann;Antonio G. Camacho;Nicolas Fournier;I. Selwyn Sacks;R. Stephen J. Sparks
  • 通讯作者:
    R. Stephen J. Sparks
Testing the completeness of earthquake catalogues and the hypothesis of self-similarity
测试地震目录的完整性和自相似性假设
  • DOI:
    10.1038/337251a0
  • 发表时间:
    1989-01-19
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Paul A. Rydelek;I. Selwyn Sacks
  • 通讯作者:
    I. Selwyn Sacks
Time-dependent models of single- and double-layer mantle convection
单、双层地幔对流的时间相关模型
  • DOI:
    10.1038/308533a0
  • 发表时间:
    1984-04-05
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Alan Paul Boss;I. Selwyn Sacks
  • 通讯作者:
    I. Selwyn Sacks

I. Selwyn Sacks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('I. Selwyn Sacks', 18)}}的其他基金

Deep Geophysical Observatory in Long Valley Caldera
长谷火山口深层地球物理观测站
  • 批准号:
    0080841
  • 财政年份:
    2000
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Measurement of P&S Velocities in Mantle Wedge Peridotite at High Pressure and Temperature
合作研究:P 的测量
  • 批准号:
    9614971
  • 财政年份:
    1997
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Structure of the Subduction Zones Beneath Western South America
南美洲西部俯冲带的结构
  • 批准号:
    8116796
  • 财政年份:
    1982
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Structure of Subduction Zones and Earthquake Source Parameters
俯冲带结构及震源参数
  • 批准号:
    8108723
  • 财政年份:
    1981
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Anelasticity and Velocity Studies of the Upper Mantle and Stress Release of Earthquakes
上地幔的滞弹性和速度研究以及地震应力释放
  • 批准号:
    7713500
  • 财政年份:
    1977
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Anelasticity Studies in the Upper Mantle and Stress Release Of Earthquakes
上地幔的滞弹性研究和地震应力释放
  • 批准号:
    7201295
  • 财政年份:
    1972
  • 资助金额:
    $ 31.55万
  • 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: Subduction Megathrust Rheology: The Combined Roles of On- and Off-Fault Processes in Controlling Fault Slip Behavior
合作研究:俯冲巨型逆断层流变学:断层上和断层外过程在控制断层滑动行为中的综合作用
  • 批准号:
    2319848
  • 财政年份:
    2024
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Subduction Megathrust Rheology: The Combined Roles of On- and Off-Fault Processes in Controlling Fault Slip Behavior
合作研究:俯冲巨型逆断层流变学:断层上和断层外过程在控制断层滑动行为中的综合作用
  • 批准号:
    2319849
  • 财政年份:
    2024
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Subduction Megathrust Rheology: The Combined Roles of On- and Off-Fault Processes in Controlling Fault Slip Behavior
合作研究:俯冲巨型逆断层流变学:断层上和断层外过程在控制断层滑动行为中的综合作用
  • 批准号:
    2319850
  • 财政年份:
    2024
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Subduction Megathrust Rheology: The Combined Roles of On- and Off-Fault Processes in Controlling Fault Slip Behavior
合作研究:俯冲巨型逆断层流变学:断层上和断层外过程在控制断层滑动行为中的综合作用
  • 批准号:
    2319847
  • 财政年份:
    2024
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Scalable Circuit theoretic Framework for Large Grid Simulations and Optimizations: from Combined T&D Planning to Electromagnetic Transients
协作研究:大型电网仿真和优化的可扩展电路理论框架:来自组合 T
  • 批准号:
    2330195
  • 财政年份:
    2024
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Scalable Circuit theoretic Framework for Large Grid Simulations and Optimizations: from Combined T&D Planning to Electromagnetic Transients
协作研究:大型电网仿真和优化的可扩展电路理论框架:来自组合 T
  • 批准号:
    2330196
  • 财政年份:
    2024
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: RAPID: Determining the Impacts of a Combined Historical Watershed and Regional Drought on Coastal Louisiana Wetland Ecohydrology
合作研究:RAPID:确定历史流域和区域干旱对路易斯安那州沿海湿地生态水文学的综合影响
  • 批准号:
    2408853
  • 财政年份:
    2023
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Using a Combined Basin Analysis, Isotopic, and Modeling Approach to Reconstruct the LGM through Early Holocene Hydroclimate for Glacial Lake Mojave.
合作研究:利用盆地分析、同位素和建模相结合的方法,通过莫哈韦冰川湖早期全新世水文气候重建末次盛冰期。
  • 批准号:
    2303485
  • 财政年份:
    2023
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Using a Combined Basin Analysis, Isotopic, and Modeling Approach to Reconstruct the LGM through Early Holocene Hydroclimate for Glacial Lake Mojave.
合作研究:利用盆地分析、同位素和建模相结合的方法,通过莫哈韦冰川湖早期全新世水文气候重建末次盛冰期。
  • 批准号:
    2303484
  • 财政年份:
    2023
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
Collaborative Research: RAPID: Determining the Impacts of a Combined Historical Watershed and Regional Drought on Coastal Louisiana Wetland Ecohydrology
合作研究:RAPID:确定历史流域和区域干旱对路易斯安那州沿海湿地生态水文学的综合影响
  • 批准号:
    2408854
  • 财政年份:
    2023
  • 资助金额:
    $ 31.55万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了