The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers
Grain-size distributions and thicknesses of tephra layers are used to reconstruct characteristics, dynamics, and hazards of explosive volcanic eruptions, but the extent to which the preservation of tephra is in uenced by depositional environments is unclear. This paper analyses grain-size distributi...
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Online Access: | https://doi.org/10.30909/vol.05.02.227248 https://doaj.org/article/b30b5ec94e834129b5c684a2cbe4dd9c |
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ftdoajarticles:oai:doaj.org/article:b30b5ec94e834129b5c684a2cbe4dd9c 2023-05-15T16:09:25+02:00 The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers Conner Morison Richard Streeter 2022-08-01T00:00:00Z https://doi.org/10.30909/vol.05.02.227248 https://doaj.org/article/b30b5ec94e834129b5c684a2cbe4dd9c EN eng Volcanica http://www.jvolcanica.org/ojs/index.php/volcanica/article/view/117 https://doaj.org/toc/2610-3540 2610-3540 doi:10.30909/vol.05.02.227248 https://doaj.org/article/b30b5ec94e834129b5c684a2cbe4dd9c Volcanica, Vol 5, Iss 2, Pp 227-248 (2022) eyjafjallajökull grímsvötn volcanic ash granulometry eruption source parameters remobilisation tephrovolcanology Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.30909/vol.05.02.227248 2022-12-30T21:17:48Z Grain-size distributions and thicknesses of tephra layers are used to reconstruct characteristics, dynamics, and hazards of explosive volcanic eruptions, but the extent to which the preservation of tephra is in uenced by depositional environments is unclear. This paper analyses grain-size distributions and thicknesses of tephra layers produced by the Eyjafjallajökull (2010) and Grímsvötn (2011) eruptions. We collected 110 tephra samples and layer thickness measurements from 86 sites at two locations in southern Iceland. Areas of different vegetation cover have varying capacities to affect rates of tephra erosion, retain fallout, or capture remobilised tephra. The Grímsvötn tephra was somewhat coarser-grained and thicker in areas of birch woodland than in adjacent moss heath, but no comparable differences in the Eyjafjallajökull tephra were observed. The spatial variability (over tens of metres) of median particle-size and layer thickness is low, providing con dence that relatively few samples and measurements may be required to capture fallout characteristics. Article in Journal/Newspaper Eyjafjallajökull Iceland Directory of Open Access Journals: DOAJ Articles Volcanica 5 2 227 248 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
eyjafjallajökull grímsvötn volcanic ash granulometry eruption source parameters remobilisation tephrovolcanology Geology QE1-996.5 |
spellingShingle |
eyjafjallajökull grímsvötn volcanic ash granulometry eruption source parameters remobilisation tephrovolcanology Geology QE1-996.5 Conner Morison Richard Streeter The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers |
topic_facet |
eyjafjallajökull grímsvötn volcanic ash granulometry eruption source parameters remobilisation tephrovolcanology Geology QE1-996.5 |
description |
Grain-size distributions and thicknesses of tephra layers are used to reconstruct characteristics, dynamics, and hazards of explosive volcanic eruptions, but the extent to which the preservation of tephra is in uenced by depositional environments is unclear. This paper analyses grain-size distributions and thicknesses of tephra layers produced by the Eyjafjallajökull (2010) and Grímsvötn (2011) eruptions. We collected 110 tephra samples and layer thickness measurements from 86 sites at two locations in southern Iceland. Areas of different vegetation cover have varying capacities to affect rates of tephra erosion, retain fallout, or capture remobilised tephra. The Grímsvötn tephra was somewhat coarser-grained and thicker in areas of birch woodland than in adjacent moss heath, but no comparable differences in the Eyjafjallajökull tephra were observed. The spatial variability (over tens of metres) of median particle-size and layer thickness is low, providing con dence that relatively few samples and measurements may be required to capture fallout characteristics. |
format |
Article in Journal/Newspaper |
author |
Conner Morison Richard Streeter |
author_facet |
Conner Morison Richard Streeter |
author_sort |
Conner Morison |
title |
The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers |
title_short |
The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers |
title_full |
The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers |
title_fullStr |
The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers |
title_full_unstemmed |
The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers |
title_sort |
influence of vegetation cover on the grain-size distributions and thicknesses of two icelandic tephra layers |
publisher |
Volcanica |
publishDate |
2022 |
url |
https://doi.org/10.30909/vol.05.02.227248 https://doaj.org/article/b30b5ec94e834129b5c684a2cbe4dd9c |
genre |
Eyjafjallajökull Iceland |
genre_facet |
Eyjafjallajökull Iceland |
op_source |
Volcanica, Vol 5, Iss 2, Pp 227-248 (2022) |
op_relation |
http://www.jvolcanica.org/ojs/index.php/volcanica/article/view/117 https://doaj.org/toc/2610-3540 2610-3540 doi:10.30909/vol.05.02.227248 https://doaj.org/article/b30b5ec94e834129b5c684a2cbe4dd9c |
op_doi |
https://doi.org/10.30909/vol.05.02.227248 |
container_title |
Volcanica |
container_volume |
5 |
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2 |
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227 |
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248 |
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1766405310323359744 |