Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092323 |
Impulsive Volcanic Plumes Generate Volcanic Lightning and Vent Discharges: A Statistical Analysis of Sakurajima Volcano in 2015 | |
Cassandra M. Smith; Damien Gaudin; Alexa R. Van Eaton; Sonja A. Behnke; Steven Reader; Ronald J. Thomas; Harald Edens; Stephen R. McNutt; Corrado Cimarelli | |
2021-05-20 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The origin of electrical activity accompanying volcanic ash plumes is an area of heightened interest in volcanology. However, it is unclear how intense an eruption needs to be to produce lightning flashes as opposed to ‘vent discharges,’ which represent the smallest scale of electrical activity. This study targets 97 carefully-monitored plumes <3 km high from Sakurajima volcano in Japan, from 1-7 June 2015. We use multiparametric measurements from sensors including a nine-station lightning mapping array and an infrared camera to characterize plume ascent. Findings demonstrate that the impulsive, high velocity plumes (>55 m/s) were most likely to create vent discharges, whereas lightning flashes occurred in plumes with high volume flux. We identified conditions where volcanic lightning occurred without detectable vent discharges, highlighting their independent source mechanisms. Our results imply that plume dynamics govern the charging for volcanic lightning, while the characteristics of the source explosion control vent discharges. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/328659 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Cassandra M. Smith,Damien Gaudin,Alexa R. Van Eaton,et al. Impulsive Volcanic Plumes Generate Volcanic Lightning and Vent Discharges: A Statistical Analysis of Sakurajima Volcano in 2015[J]. Geophysical Research Letters,2021. |
APA | Cassandra M. Smith.,Damien Gaudin.,Alexa R. Van Eaton.,Sonja A. Behnke.,Steven Reader.,...&Corrado Cimarelli.(2021).Impulsive Volcanic Plumes Generate Volcanic Lightning and Vent Discharges: A Statistical Analysis of Sakurajima Volcano in 2015.Geophysical Research Letters. |
MLA | Cassandra M. Smith,et al."Impulsive Volcanic Plumes Generate Volcanic Lightning and Vent Discharges: A Statistical Analysis of Sakurajima Volcano in 2015".Geophysical Research Letters (2021). |
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