The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy
Our aim is to understand the significance of slope position, slope angle and the interplay between slopes and vegetation in influencing the ways in which tephra layers may be preserved, thickened or thinned within the Quaternary stratigraphic record. This matters because tephra layers are used to re...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-role-of-vegetation-cover-and-slope-angle-in-tephra-layer-preservation-and-implications-for-quaternary-tephrostratigraphy(6be9da41-3403-483d-95be-8b2613894417).html https://doi.org/10.1016/j.palaeo.2017.10.002 https://research-repository.st-andrews.ac.uk/bitstream/10023/16194/1/Streeter_2017_PPP_TephraLayerPreservation_AAM.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/6be9da41-3403-483d-95be-8b2613894417 2023-05-15T16:09:37+02:00 The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy Dugmore, Andrew Streeter, Richard Cutler, Nick 2018-01-01 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-role-of-vegetation-cover-and-slope-angle-in-tephra-layer-preservation-and-implications-for-quaternary-tephrostratigraphy(6be9da41-3403-483d-95be-8b2613894417).html https://doi.org/10.1016/j.palaeo.2017.10.002 https://research-repository.st-andrews.ac.uk/bitstream/10023/16194/1/Streeter_2017_PPP_TephraLayerPreservation_AAM.pdf eng eng info:eu-repo/semantics/openAccess Dugmore , A , Streeter , R & Cutler , N 2018 , ' The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy ' , Palaeogeography, Palaeoclimatology, Palaeoecology , vol. 489 , pp. 105-116 . https://doi.org/10.1016/j.palaeo.2017.10.002 Grímsvötn Eyjafjallajökull Mount St Helens Biocrust Isopach maps Fallout volumes article 2018 ftunstandrewcris https://doi.org/10.1016/j.palaeo.2017.10.002 2022-06-02T07:47:57Z Our aim is to understand the significance of slope position, slope angle and the interplay between slopes and vegetation in influencing the ways in which tephra layers may be preserved, thickened or thinned within the Quaternary stratigraphic record. This matters because tephra layers are used to reconstruct volumes of past volcanic eruptions and assess both past and future risks, hazards and impacts. This study uses modern data to better understand the formation of the palaeoenvironmental record and evaluates a data set of > 5500 tephra layer thickness measurements across a range of slopes and vegetation types in Iceland and Washington State, USA. We measured tephra layers formed in October 1918, March 1947, May 1980, April 2010 and May 2011 across moderate slopes (< 35°). Holding vegetation communities constant, location on slope had no systematic impact on mean tephra layer thickness. Holding slopes constant (< 5°), we observed systematic modifications of initial fallout thickness in areas of different vegetation types, with layers both thinning and thickening in areas of partial vegetation cover, and thickening within taller vegetation. This has implications for the interpretation of Quaternary environmental record and the reconstruction of past volcanic fallout across areas of varied relief and strong vegetation gradients, where vegetation structure is patchy and topography is variable. Sloping sites with a consistent vegetation cover may produce the most reliable stratigraphic records of fallout whereas flat sites with varied vegetation might not. Article in Journal/Newspaper Eyjafjallajökull Iceland University of St Andrews: Research Portal Palaeogeography, Palaeoclimatology, Palaeoecology 489 105 116 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Grímsvötn Eyjafjallajökull Mount St Helens Biocrust Isopach maps Fallout volumes |
spellingShingle |
Grímsvötn Eyjafjallajökull Mount St Helens Biocrust Isopach maps Fallout volumes Dugmore, Andrew Streeter, Richard Cutler, Nick The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy |
topic_facet |
Grímsvötn Eyjafjallajökull Mount St Helens Biocrust Isopach maps Fallout volumes |
description |
Our aim is to understand the significance of slope position, slope angle and the interplay between slopes and vegetation in influencing the ways in which tephra layers may be preserved, thickened or thinned within the Quaternary stratigraphic record. This matters because tephra layers are used to reconstruct volumes of past volcanic eruptions and assess both past and future risks, hazards and impacts. This study uses modern data to better understand the formation of the palaeoenvironmental record and evaluates a data set of > 5500 tephra layer thickness measurements across a range of slopes and vegetation types in Iceland and Washington State, USA. We measured tephra layers formed in October 1918, March 1947, May 1980, April 2010 and May 2011 across moderate slopes (< 35°). Holding vegetation communities constant, location on slope had no systematic impact on mean tephra layer thickness. Holding slopes constant (< 5°), we observed systematic modifications of initial fallout thickness in areas of different vegetation types, with layers both thinning and thickening in areas of partial vegetation cover, and thickening within taller vegetation. This has implications for the interpretation of Quaternary environmental record and the reconstruction of past volcanic fallout across areas of varied relief and strong vegetation gradients, where vegetation structure is patchy and topography is variable. Sloping sites with a consistent vegetation cover may produce the most reliable stratigraphic records of fallout whereas flat sites with varied vegetation might not. |
format |
Article in Journal/Newspaper |
author |
Dugmore, Andrew Streeter, Richard Cutler, Nick |
author_facet |
Dugmore, Andrew Streeter, Richard Cutler, Nick |
author_sort |
Dugmore, Andrew |
title |
The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy |
title_short |
The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy |
title_full |
The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy |
title_fullStr |
The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy |
title_full_unstemmed |
The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy |
title_sort |
role of vegetation cover and slope angle in tephra layer preservation and implications for quaternary tephrostratigraphy |
publishDate |
2018 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-role-of-vegetation-cover-and-slope-angle-in-tephra-layer-preservation-and-implications-for-quaternary-tephrostratigraphy(6be9da41-3403-483d-95be-8b2613894417).html https://doi.org/10.1016/j.palaeo.2017.10.002 https://research-repository.st-andrews.ac.uk/bitstream/10023/16194/1/Streeter_2017_PPP_TephraLayerPreservation_AAM.pdf |
genre |
Eyjafjallajökull Iceland |
genre_facet |
Eyjafjallajökull Iceland |
op_source |
Dugmore , A , Streeter , R & Cutler , N 2018 , ' The role of vegetation cover and slope angle in tephra layer preservation and implications for Quaternary tephrostratigraphy ' , Palaeogeography, Palaeoclimatology, Palaeoecology , vol. 489 , pp. 105-116 . https://doi.org/10.1016/j.palaeo.2017.10.002 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2017.10.002 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
489 |
container_start_page |
105 |
op_container_end_page |
116 |
_version_ |
1766405465817743360 |