| 项目编号: | 1551149
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| 项目名称: | Collaborative Research: Experimental Investigation of the Electrical Properties of Hydrous Silicate Melts in Subduction Context |
| 作者: | Kurt Leinenweber
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| 承担单位: | Arizona State University
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| 批准年: | 2016
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| 开始日期: | 2016-08-01
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| 结束日期: | 2018-07-31
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| 资助金额: | 20394
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | subduction zone
; hydrous silicate
; subduction
; multi-scale investigation
; subduction context
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| 英文摘要: | The dynamics and time-evolution of subduction are driven by mechanical and chemical processes that influence buoyancy forces, slab motion, contrasting thermal fields, phase equilibria, and volatile transport. By enhancing mass transfer and energy release, the cycle of fluids (and in particular, hydrous silicate melts) in subduction zones is a major component of slab recycling, arc volcanism, and continent-building processes. A better understanding of the role of melt and volatiles in subduction is therefore key to improving our knowledge of the structure and composition of subduction zones as well as geodynamic processes at work. It can also help us better assess volcanic and earthquake hazards in these contexts.
This project is a multi-disciplinary and multi-scale investigation of the electrical conductivity of hydrous silicate melts in subduction context, at the depth of the mantle wedge and shallower, in order to characterize and model the electrical response of hydrous melts in subduction zones. In situ electrical measurements will be performed at pressure and temperature conditions relevant to subduction zones on dry and hydrous silicate melts. The major objective is to understand better the transport properties of melts and volatiles in subduction zones as imaged by geophysical (electromagnetic) surveys. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/91558
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Kurt Leinenweber. Collaborative Research: Experimental Investigation of the Electrical Properties of Hydrous Silicate Melts in Subduction Context. 2016-01-01.
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