COLLABORATIVE RESEARCH: Measuring Volcanic Ash Properties That Promote the Generation of Lightning in Eruptive Columns and Plumes

GSTDTAP

项目编号	1444384
	COLLABORATIVE RESEARCH: Measuring Volcanic Ash Properties That Promote the Generation of Lightning in Eruptive Columns and Plumes
	Kimberly Genareau
主持机构	University of Alabama Tuscaloosa
项目开始年	2015
	2015-03-01
项目结束日期	2017-02-28
资助机构	US-NSF
项目类别	Standard Grant
项目经费	137946(USD)
国家	美国
语种	英语
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
来源学科分类	Geosciences - Atmospheric and Geospace Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/67613
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Kimberly Genareau.COLLABORATIVE RESEARCH: Measuring Volcanic Ash Properties That Promote the Generation of Lightning in Eruptive Columns and Plumes.2015.