CSEDI: Dynamics of Subducted Slabs in the Transition Zone: Compressible Convection with Self-Consistent Equation of State
CSEDI:过渡带俯冲板片动力学:具有自洽状态方程的可压缩对流
基本信息
- 批准号:0855446
- 负责人:
- 金额:$ 25.37万
- 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:2009-10-01 至 2014-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Seismologists have imaged a variety of geometries fast anomalies beneath subduction zones. These anomalies have been interpreted as deformed subducted oceanic lithosphere lying atop the base of the transition zone at some locations and subducted oceanic lithosphere traversing the transition zone with little apparent resistance at other locations. The investigators will investigate how the equation of state (i.e., density as a function of pressure, temperature, and composition) impacts the dynamics and morphology of subducted oceanic lithosphere. While a number of studies have shown that the morphology of subducted oceanic crust is controlled by the evolution of the plate boundary at the surface, the investigators have shown that the material properties and phase changes in the transition zone also have a significant impact on the morphology of subducted material. This research will bring together laboratory measurements of mineral properties with mantle convection calculations. Most compressible convection calculations currently use a simplified equation of state that is thermodynamically inconsistent and the first-order question that will be addressed is when and whether it is justified to use a simple equation of state. A second question is which parameters (e.g., slab strength, Clapyron slope of the transition zone phase transformations, slab age, plate velocity, trench migration) control the transition from flat lying slabs to penetrating slabs. The third component of this work is to assess which minerals and specific parameters in the thermodynamic database have the most significant effect on the dynamics of subduction. This provides guidance to the mineral physics research community as to which parameter(s) have the most significant influence on the dynamics of subduction. This will provide feedback as to which parameters to focus on improving measurements. This proposal will develop a clearly documented, modular, software package that will provide the thermodynamic properties of a mantle material at a given pressure and temperature. The goal is to enable future researchers to update elements of the thermodynamic database as new information becomes available or to perform parameter study investigations by systematically changing specific elements of the thermodynamic database. This software will be developed to interface with current and future mantle convection codes and will be made available to the research community through the Computational Infrastructure for Geodynamics website.
地震学家已经拍摄了俯冲带下各种几何形状的快速异常图像。这些异常被解释为变形的俯冲大洋岩石圈在某些位置位于过渡带的底部,而俯冲的大洋岩石圈穿过过渡带,而在其他位置几乎没有明显的阻力。研究人员将研究状态方程(即密度作为压力、温度和成分的函数)如何影响俯冲海洋岩石圈的动力学和形态。虽然许多研究表明,俯冲洋壳的形态受表面板块边界的演化控制,但研究人员表明,过渡带的物质性质和相变也对俯冲物质的形态产生重大影响。这项研究将把矿物性质的实验室测量与地幔对流计算结合起来。大多数可压缩对流计算目前使用的是热力学上不一致的简化状态方程,要解决的第一个问题是何时以及是否有理由使用简单的状态方程。第二个问题是,哪些参数(例如,板坯强度、过渡区克拉皮龙斜率、板坯年龄、板材速度、沟槽迁移)控制着从平卧板坯到贯通板坯的转变。这项工作的第三个组成部分是评估热力学数据库中哪些矿物和具体参数对俯冲动力学有最显著的影响。这为矿物物理研究界提供了指导,即哪些参数(S)对俯冲动力学具有最显著的影响。这将提供反馈,说明哪些参数应侧重于改进测量。这项提议将开发一个明确记录的、模块化的软件包,提供给定压力和温度下地幔材料的热力学性质。目标是使未来的研究人员能够在获得新信息时更新热力学数据库的元素,或通过系统地改变热力学数据库的特定元素来进行参数研究调查。将开发这一软件,以便与当前和未来的地幔对流代码对接,并将通过地球动力学计算基础设施网站向研究界提供。
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)
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Scott King其他文献
The Sound of Temperature: What Information do Pouring Sounds Convey Concerning the Temperature of a Beverage
温度的声音:倒水声音传达了哪些有关饮料温度的信息
- DOI:
10.1111/joss.12052 - 发表时间:
2013 - 期刊:
- 影响因子:2
- 作者:
Carlos Velasco;Russ Jones;Scott King;C. Spence - 通讯作者:
C. Spence
Multisensory Augmented Reality in the Context of a Retail Clothing Application
零售服装应用中的多感官增强现实
- DOI:
- 发表时间:
2013 - 期刊:
- 影响因子:0
- 作者:
Cristy Ho;Russ Jones;Scott King;L. Murray;C. Spence - 通讯作者:
C. Spence
Students Success Modeling: Most Important Factors
学生成功建模:最重要的因素
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
Sahar Voghoei;J. M. Byars;Scott King;Soheil Shapouri;Hamed Yaghoobian;K. Rasheed;H. Arabnia - 通讯作者:
H. Arabnia
Single Coronary Artery
- DOI:
10.1016/j.jacc.2008.05.067 - 发表时间:
2009-02-03 - 期刊:
- 影响因子:
- 作者:
Matthew Corbett;James Powers;Scott King;Michael Quinn;David Harris - 通讯作者:
David Harris
Scott King的其他文献
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{{ truncateString('Scott King', 18)}}的其他基金
Collaborative Research: AGEP ACA: An HSI R2 Strategic Collaboration to Improve Advancement of Hispanic Students Into the Professoriate
合作研究:AGEP ACA:HSI R2 战略合作,以提高西班牙裔学生进入教授职位的水平
- 批准号:
2343235 - 财政年份:2024
- 资助金额:
$ 25.37万 - 项目类别:
Standard Grant
AGEP 2022 National Research Conference
AGEP 2022 全国研究会议
- 批准号:
2040493 - 财政年份:2021
- 资助金额:
$ 25.37万 - 项目类别:
Standard Grant
Collaborative Research: The Texas A&M System AGEP Alliance: A Model to Advance Historically Underrepresented Minorities in the STEM Professoriate
合作研究:德克萨斯 A
- 批准号:
1723165 - 财政年份:2017
- 资助金额:
$ 25.37万 - 项目类别:
Continuing Grant
Collaborative Research: Mantle Dynamics, Lithospheric Structure, and Topographic Evolution of the Southeastern US Continental Margin
合作研究:地幔动力学、岩石圈结构和美国东南部大陆边缘的地形演化
- 批准号:
1250988 - 财政年份:2013
- 资助金额:
$ 25.37万 - 项目类别:
Continuing Grant
Expanding the STEM Pool With Transfer Scholarships (ESP)
通过转学奖学金 (ESP) 扩大 STEM 人才库
- 批准号:
1153961 - 财政年份:2012
- 资助金额:
$ 25.37万 - 项目类别:
Standard Grant
Workshop Proposal: Travel Support for US participants to the International Geophysics of Slab Dynamics Conference, Jeju Island, South Korea, August 19-22, 2012
研讨会提案:为参加 2012 年 8 月 19 日至 22 日在韩国济州岛举行的国际板状动力学地球物理学会议的美国与会者提供差旅支持
- 批准号:
1238402 - 财政年份:2012
- 资助金额:
$ 25.37万 - 项目类别:
Standard Grant
Evaluating the Trench Parallel Flow Hypothesis with Numerical Models of Convection
用对流数值模型评估沟槽平行流假说
- 批准号:
0838026 - 财政年份:2009
- 资助金额:
$ 25.37万 - 项目类别:
Continuing Grant
Attacking the Gathering Storm in Computer Sciences and Mathematics (STORM)
攻击计算机科学和数学中的聚集风暴(STORM)
- 批准号:
0806780 - 财政年份:2008
- 资助金额:
$ 25.37万 - 项目类别:
Standard Grant
Dynamic Subduction Zone Thermal Modeling
动态俯冲带热模拟
- 批准号:
0749708 - 财政年份:2007
- 资助金额:
$ 25.37万 - 项目类别:
Continuing Grant
Dynamic Subduction Zone Thermal Modeling
动态俯冲带热模拟
- 批准号:
0408005 - 财政年份:2004
- 资助金额:
$ 25.37万 - 项目类别:
Continuing Grant
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