Collaborative Research: Structure and properties of geofluids and their impact on fluid migration in subduction zones

合作研究:俯冲带地流体的结构和性质及其对流体运移的影响

基本信息

  • 批准号:
    2246803
  • 负责人:
  • 金额:
    $ 38.98万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-06-01 至 2026-05-31
  • 项目状态:
    未结题

项目摘要

Magmatism plays a vital role in transporting matter and energy from the Earth’s deep interior to the surface. While some eruptions are explosive, others erupt without major explosive behavior, leading to different natural hazards for each eruptive style. These distinct eruption styles are controlled by the fundamental physical properties of magma, particularly viscosity, and density. The viscosity of magma is highly dependent on the atomic-scale structure of the magma, influenced by magma composition, temperature, pressure, and the presence of dissolved gasses such as water vapor. In this study, the researchers aim to obtain fundamental physical constraints on the structure and viscosity of magma at conditions relevant to the Earth’s interior. We will combine the experimentally derived physical properties of magma and fluids with numerical simulations to predict how magmas migrate from the Earth’s subducting plates. It is the migration of this material that ultimately leads to eruptions at the surface, but the complex role of viscosity in magma transport makes it difficult to trace material from its source in the interior to the surface. The project will provide training for the next generation of Earth Scientists at various stages of their career, including high school, undergraduate, and graduate students, as well as post-doctoral scholars. Although extensive research has been done to constrain the elastic and transport properties of fluids and melts at conditions relevant to the Earth’s interior, the combined effects of pressure, temperature, and dissolved water remain poorly constrained at the conditions of the upper mantle where these melts are produced. This research will couple lab- and synchrotron-based experimental data to pressures up to 20 GPa with first-principles molecular dynamics (FPMD) simulations, with the objective to determine the local melt structure, and fluid and melt viscosity to high pressures and temperatures. This work will quantify the structure and properties of aqueous fluids with dissolved albite, in addition to albite and basaltic melts with and without water. The results will provide insight into how pressure, temperature, and composition affect the structure and viscosity of polymerized aluminosilicate melts at mid-mantle depths and illuminate the causes of observed pressure anomalies on viscosity. The resulting viscosities will be integrated into two-phase flow models in the slab-arc system and the upwelling region above the mantle transition zone to assess the pathways of melt migrations through state-of-the-art geodynamical models. These models will assess how the pattern of fluid migration changes with slab age and subduction rate, slab thermal structure, and the distribution and volume of fluid sources in the subducting slab. The resulting work will assess the impact of fluid volumes due to melting and whether melting alone is sufficient to focus melts into a narrow region beneath volcanic regions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
岩浆活动在将物质和能量从地球内部深处输送到地表的过程中起着至关重要的作用。虽然有些喷发是爆炸性的,但其他喷发没有重大的爆炸行为,导致每种喷发类型的自然灾害不同。这些不同的喷发方式是由岩浆的基本物理性质,特别是粘度和密度控制的。岩浆的粘度高度依赖于岩浆的原子尺度结构,受岩浆成分、温度、压力和溶解气体(如水蒸气)的影响。在这项研究中,研究人员的目标是在与地球内部相关的条件下获得岩浆结构和粘度的基本物理约束。我们将结合联合收割机的实验得出的物理性质的岩浆和流体的数值模拟来预测岩浆迁移从地球的俯冲板块。正是这种物质的迁移最终导致了地表的喷发,但岩浆运输中粘性的复杂作用使得很难从内部的来源追踪物质到地表。该项目将为下一代地球科学家在其职业生涯的各个阶段提供培训,包括高中,本科和研究生,以及博士后学者。 虽然已经进行了广泛的研究,以限制弹性和运输性能的流体和熔体在有关地球内部的条件下,压力,温度和溶解水的综合影响仍然很差的限制在上地幔的条件下,这些熔体产生。这项研究将基于实验室和同步加速器的实验数据与压力高达20 GPa的第一性原理分子动力学(FPMD)模拟相结合,目的是确定局部熔体结构,以及高压和高温下的流体和熔体粘度。这项工作将量化的结构和性质的含水流体溶解的钠长石,除了钠长石和玄武质熔体有和没有水。结果将提供洞察压力,温度和组合物如何影响聚合的铝硅酸盐熔体的结构和粘度在中地幔深处,并阐明所观察到的压力异常粘度的原因。由此产生的粘度将被整合到板弧系统和地幔过渡带上方的上涌区域的两相流模型中,以通过最先进的地球动力学模型评估熔体迁移的途径。这些模型将评估流体迁移模式如何随板块年龄和俯冲速率、板块热结构以及俯冲板块中流体源的分布和体积而变化。由此产生的工作将评估由于融化造成的流体体积的影响,以及融化本身是否足以将融化物集中到火山区域下方的狭窄区域。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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Yanbin Wang其他文献

MIC_Locator: a novel image-based protein subcellular location multi-label prediction model based on multi-scale monogenic signal representation and intensity encoding strategy
MIC_Locator:一种基于多尺度单基因信号表示和强度编码策略的新型基于图像的蛋白质亚细胞位置多标签预测模型
  • DOI:
    10.1186/s12859-019-3136-3
  • 发表时间:
    2019-10
  • 期刊:
  • 影响因子:
    3
  • 作者:
    Fan Yang;Yang Liu;Yanbin Wang;Zhijian Yin;Zhen Yang
  • 通讯作者:
    Zhen Yang
Comparison of deterministic and stochastic approaches to crosshole seismic travel-time inversions
井间地震走时反演确定性方法和随机方法的比较
  • DOI:
    10.26464/epp2019056
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Yanzhe Zhao;Yanbin Wang
  • 通讯作者:
    Yanbin Wang
二置換ピリジン塩の不斉水素化反応によるCP-99,994の合成
二取代吡啶盐不对称氢化反应合成CP-99,994
  • DOI:
  • 发表时间:
    2016
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Yanbin Wang;Hideo Ohkita;Hiroaki Benten;Shinzaburo Ito;東田 皓介・飯室 敦弘・喜多 祐介・真島 和志
  • 通讯作者:
    東田 皓介・飯室 敦弘・喜多 祐介・真島 和志
Partitioning of nickel, cobalt and manganese between silicate perovskite and periclase: a test of crystal field theory at high pressure
镍、钴和锰在硅酸盐钙钛矿和方镁石之间的分配:高压晶体场理论的检验
  • DOI:
    10.1016/s0012-821x(96)00234-8
  • 发表时间:
    1997
  • 期刊:
  • 影响因子:
    5.3
  • 作者:
    V. Malavergne;F. Guyot;Yanbin Wang;I. Martinez
  • 通讯作者:
    I. Martinez
(∂µ/∂T)p of the Lower Mantle
下地幔的 (∂μ/∂T)p
  • DOI:
    10.1007/978-3-0348-9200-1_7
  • 发表时间:
    1996
  • 期刊:
  • 影响因子:
    2
  • 作者:
    Yanbin Wang;D. Weidner
  • 通讯作者:
    D. Weidner

Yanbin Wang的其他文献

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{{ truncateString('Yanbin Wang', 18)}}的其他基金

Collaborative Research: The Mechanics of Intermediate Depth Earthquakes: a Multiscale Investigation Combining Seismological Analyses, Laboratory Experiments, and Numerical Modeling
合作研究:中深度地震的力学:结合地震分析、实验室实验和数值模拟的多尺度研究
  • 批准号:
    1925920
  • 财政年份:
    2019
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Standard Grant
Collaborative Research: Density and structure of s
合作研究:密度和结构
  • 批准号:
    1620548
  • 财政年份:
    2016
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Continuing Grant
CSEDI Collaborative Research: Grand Challenge for Experimental Study of Plastic Deformation Under Deep Earth Conditions
CSEDI合作研究:深地条件下塑性变形实验研究的巨大挑战
  • 批准号:
    1361276
  • 财政年份:
    2014
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Continuing Grant
Collaborative Research: Physical properties and structure of silicate melts and supercooled liquids at high pressures
合作研究:高压硅酸盐熔体和过冷液体的物理性质和结构
  • 批准号:
    1214376
  • 财政年份:
    2012
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Standard Grant
Collaborative Research: CSEDI--Grand Challenge for Experimental Study of Plastic Deformation Under Deep Earth Conditions
合作研究:CSEDI--深地条件下塑性变形实验研究的重大挑战
  • 批准号:
    0968456
  • 财政年份:
    2010
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Continuing Grant
Collaborative Research: Properties of Melts and Supercooled Liquids at High Pressure by In Situ X-ray Computed Tomography and Absorption
合作研究:通过原位 X 射线计算机断层扫描和吸收研究熔体和过冷液体在高压下的特性
  • 批准号:
    0711057
  • 财政年份:
    2008
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Standard Grant
Collaborative Research: CSEDI--Grand Challenge for Experimental Study of Plastic Deformation Under Deep Earth Conditions
合作研究:CSEDI--深地条件下塑性变形实验研究的重大挑战
  • 批准号:
    0652574
  • 财政年份:
    2007
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Continuing Grant
High Pressure Synchrotron Radiology and Microtomography Studies of Mechanisms and Kinetics of Liquid Iron -Silicate Segregation: Implications for Formation of the Earth's Core
液态铁硅酸盐偏析机制和动力学的高压同步辐射学和显微断层扫描研究:对地核形成的影响
  • 批准号:
    0001088
  • 财政年份:
    2000
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Standard Grant
P-V-T Equations of State of Mantle Minerals
地幔矿物状态的 P-V-T 方程
  • 批准号:
    9526634
  • 财政年份:
    1996
  • 资助金额:
    $ 38.98万
  • 项目类别:
    Continuing Grant

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Collaborative Research: The influence of incoming plate structure and fluids on arc melt generation at the Lesser Antilles subduction system
合作研究:来料板结构和流体对小安的列斯群岛俯冲系统电弧熔化产生的影响
  • 批准号:
    2316136
  • 财政年份:
    2024
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合作研究:来料板结构和流体对小安的列斯群岛俯冲系统电弧熔化产生的影响
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    2400352
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    2024
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