| 项目编号: | 1444401
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| 项目名称: | COLLABORATIVE RESEARCH: Measuring Volcanic Ash Properties That Promote the Generation of Lightning in Eruptive Columns and Plumes |
| 作者: | Stephen McNutt
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| 承担单位: | University of South Florida
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| 批准年: | 2014
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| 开始日期: | 2015-03-01
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| 结束日期: | 2018-02-28
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| 资助金额: | USD63301
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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 - Atmospheric and Geospace Sciences
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| 英文关键词: | volcanic lightning
; generation
; specific ash grain texture
; ash material
; power generation industry
; ash particle
; early career researcher
; ash sample
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| 英文摘要: | Volcanic lightning is a common but understudied phenomenon that is poorly parameterized. This project focuses on learning more about the properties of ash particles relating to their role in the generation of electrical fields in volcanic plumes and in volcanic lightning. In addition to being a charge carrier, volcanic ash may also influence the production of lightning due to its potential role in ice nucleation and as polarized, conducting particles. A range of material laboratory testing and characterization techniques will be used on samples obtained from several Alaskan volcanoes to determine if ash samples of different mineral and structurally bound water content will affect the functionality of conducting/insulating ash materials, and their ice nucleation affinity. Generation of volcanic (silicic glass) spherules as an indicator of the production of specific ash grain textures during volcanic lightning episodes will also be sought for.
The broader impacts of the proposed research include the training of undergraduate students, creation of teaching materials, and the support of an early career researcher. Improved understanding of volcanic hazards for the aviation, communication, and power generation industries are additional potential societal impacts |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95050
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Stephen McNutt. COLLABORATIVE RESEARCH: Measuring Volcanic Ash Properties That Promote the Generation of Lightning in Eruptive Columns and Plumes. 2014-01-01.
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