Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn
Volcanic ash is known to charge electrically, producing some of the most spectacular displays of lightning in nature. Here we investigate the electrical characteristics of ash from two different Icelandic volcanoes - Eyjafjallajökull in 2010 and Grímsvötn in 2011. Laboratory tests investigated the c...
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ftdatacite:10.48550/arxiv.1207.6733 2023-05-15T16:09:23+02:00 Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn Houghton, I. M. Aplin, K. L. Nicoll, K. A. 2012 https://dx.doi.org/10.48550/arxiv.1207.6733 https://arxiv.org/abs/1207.6733 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Geophysics physics.geo-ph Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences Preprint Article article CreativeWork 2012 ftdatacite https://doi.org/10.48550/arxiv.1207.6733 2022-04-01T13:41:39Z Volcanic ash is known to charge electrically, producing some of the most spectacular displays of lightning in nature. Here we investigate the electrical characteristics of ash from two different Icelandic volcanoes - Eyjafjallajökull in 2010 and Grímsvötn in 2011. Laboratory tests investigated the charge transferred to a conducting plate due to fall of volcanic ash through an insulating cylinder. Ash from the Eyjafjallajökull eruption was found to charge slightly positively, whilst Grímsvötn ash was substantially negatively charged. Measurement of the volumetric ratio of particle diameters showed the Eyjafjallajökull ash to have a bimodal distribution, and the Grímsvötn ash a monomodal distribution. Previous experiments with single-material particle systems show that smaller particles charge negatively and larger ones positively. Since charge is carried by individual particles, the charging is likely to be dominated by the number size distribution, therefore the large negative charge of the Grímsvötn ash is likely to be related to a large number of small particles within the number size distribution of the ash. : Proceedings of Annual Aerosol Society Conference, Bristol University, UK, 3rd-4th April 2012 Report Eyjafjallajökull DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Geophysics physics.geo-ph Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences |
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Geophysics physics.geo-ph Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences Houghton, I. M. Aplin, K. L. Nicoll, K. A. Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn |
topic_facet |
Geophysics physics.geo-ph Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences |
description |
Volcanic ash is known to charge electrically, producing some of the most spectacular displays of lightning in nature. Here we investigate the electrical characteristics of ash from two different Icelandic volcanoes - Eyjafjallajökull in 2010 and Grímsvötn in 2011. Laboratory tests investigated the charge transferred to a conducting plate due to fall of volcanic ash through an insulating cylinder. Ash from the Eyjafjallajökull eruption was found to charge slightly positively, whilst Grímsvötn ash was substantially negatively charged. Measurement of the volumetric ratio of particle diameters showed the Eyjafjallajökull ash to have a bimodal distribution, and the Grímsvötn ash a monomodal distribution. Previous experiments with single-material particle systems show that smaller particles charge negatively and larger ones positively. Since charge is carried by individual particles, the charging is likely to be dominated by the number size distribution, therefore the large negative charge of the Grímsvötn ash is likely to be related to a large number of small particles within the number size distribution of the ash. : Proceedings of Annual Aerosol Society Conference, Bristol University, UK, 3rd-4th April 2012 |
format |
Report |
author |
Houghton, I. M. Aplin, K. L. Nicoll, K. A. |
author_facet |
Houghton, I. M. Aplin, K. L. Nicoll, K. A. |
author_sort |
Houghton, I. M. |
title |
Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn |
title_short |
Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn |
title_full |
Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn |
title_fullStr |
Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn |
title_full_unstemmed |
Electrical properties of volcanic ash samples from Eyjafjallajökull and Grímsvötn |
title_sort |
electrical properties of volcanic ash samples from eyjafjallajökull and grímsvötn |
publisher |
arXiv |
publishDate |
2012 |
url |
https://dx.doi.org/10.48550/arxiv.1207.6733 https://arxiv.org/abs/1207.6733 |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1207.6733 |
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1766405281216987136 |