Seismic ground vibrations give advanced early-warning of subglacial floods
Glacier runoff and melt from volcanic and geothermal activity accumulates in glacier dammed lakes in glaciated areas around the world. These lakes eventually drain, creating hazardous subglacial floods that are usually only confirmed after they exit the glacier and reach local river systems, which c...
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2020
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Online Access: | https://dair.dias.ie/id/eprint/1157/ https://dair.dias.ie/id/eprint/1157/1/Seismic%20ground%20vibrations%20give%20advanced.pdf https://doi.org/10.1038/s41467-020-15744-5 |
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ftdublininstadvs:oai:dair.dias.ie:1157 2023-05-15T16:21:42+02:00 Seismic ground vibrations give advanced early-warning of subglacial floods Eibl, Eva P. S. Bean, Christopher J. Einarsson, Bergur Pálsson, Finnur Vogfjörd, Kristin S. 2020 text https://dair.dias.ie/id/eprint/1157/ https://dair.dias.ie/id/eprint/1157/1/Seismic%20ground%20vibrations%20give%20advanced.pdf https://doi.org/10.1038/s41467-020-15744-5 en eng Nature Research https://dair.dias.ie/id/eprint/1157/1/Seismic%20ground%20vibrations%20give%20advanced.pdf Eibl, Eva P. S. and Bean, Christopher J. and Einarsson, Bergur and Pálsson, Finnur and Vogfjörd, Kristin S. (2020) Seismic ground vibrations give advanced early-warning of subglacial floods. Nature Communications, 11 (2504). Online ISSN 2041-1723 https://doi.org/10.1038/s41467-020-15744-5 Article PeerReviewed 2020 ftdublininstadvs https://doi.org/10.1038/s41467-020-15744-5 2022-12-15T23:59:50Z Glacier runoff and melt from volcanic and geothermal activity accumulates in glacier dammed lakes in glaciated areas around the world. These lakes eventually drain, creating hazardous subglacial floods that are usually only confirmed after they exit the glacier and reach local river systems, which can be many tens of kilometres from the flood source. Once in the river systems, they travel rapidly to populated areas. Such delayed detection represents a potentially lethal shortcoming in early-warning. Here we demonstrate how to advance early warning potential through the analysis of four such floods in a glaciated region of Iceland. By comparing exceptional multidisciplinary hydrological, GPS and seismic ground vibration(tremor) data, we show that array analysis of seismic tremor can be used for early location and tracking of the subglacial flood front. Furthermore the timing and size of the impending flood can be estimated, prior to it entering the river system. Advanced warnings of between 20 to 34 hours are achieved for large (peak discharge of more than 3000 m3/s, accumulation time of ~ 5.25 years) to small floods (peak discharges from 210 to 380 m3/s, accumulation times of ~ 1.3 years) respectively. Article in Journal/Newspaper glacier Iceland Dublin Institute for Advanced Studies: DIAS Institutional Repository Nature Communications 11 1 |
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Dublin Institute for Advanced Studies: DIAS Institutional Repository |
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language |
English |
description |
Glacier runoff and melt from volcanic and geothermal activity accumulates in glacier dammed lakes in glaciated areas around the world. These lakes eventually drain, creating hazardous subglacial floods that are usually only confirmed after they exit the glacier and reach local river systems, which can be many tens of kilometres from the flood source. Once in the river systems, they travel rapidly to populated areas. Such delayed detection represents a potentially lethal shortcoming in early-warning. Here we demonstrate how to advance early warning potential through the analysis of four such floods in a glaciated region of Iceland. By comparing exceptional multidisciplinary hydrological, GPS and seismic ground vibration(tremor) data, we show that array analysis of seismic tremor can be used for early location and tracking of the subglacial flood front. Furthermore the timing and size of the impending flood can be estimated, prior to it entering the river system. Advanced warnings of between 20 to 34 hours are achieved for large (peak discharge of more than 3000 m3/s, accumulation time of ~ 5.25 years) to small floods (peak discharges from 210 to 380 m3/s, accumulation times of ~ 1.3 years) respectively. |
format |
Article in Journal/Newspaper |
author |
Eibl, Eva P. S. Bean, Christopher J. Einarsson, Bergur Pálsson, Finnur Vogfjörd, Kristin S. |
spellingShingle |
Eibl, Eva P. S. Bean, Christopher J. Einarsson, Bergur Pálsson, Finnur Vogfjörd, Kristin S. Seismic ground vibrations give advanced early-warning of subglacial floods |
author_facet |
Eibl, Eva P. S. Bean, Christopher J. Einarsson, Bergur Pálsson, Finnur Vogfjörd, Kristin S. |
author_sort |
Eibl, Eva P. S. |
title |
Seismic ground vibrations give advanced early-warning of subglacial floods |
title_short |
Seismic ground vibrations give advanced early-warning of subglacial floods |
title_full |
Seismic ground vibrations give advanced early-warning of subglacial floods |
title_fullStr |
Seismic ground vibrations give advanced early-warning of subglacial floods |
title_full_unstemmed |
Seismic ground vibrations give advanced early-warning of subglacial floods |
title_sort |
seismic ground vibrations give advanced early-warning of subglacial floods |
publisher |
Nature Research |
publishDate |
2020 |
url |
https://dair.dias.ie/id/eprint/1157/ https://dair.dias.ie/id/eprint/1157/1/Seismic%20ground%20vibrations%20give%20advanced.pdf https://doi.org/10.1038/s41467-020-15744-5 |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_relation |
https://dair.dias.ie/id/eprint/1157/1/Seismic%20ground%20vibrations%20give%20advanced.pdf Eibl, Eva P. S. and Bean, Christopher J. and Einarsson, Bergur and Pálsson, Finnur and Vogfjörd, Kristin S. (2020) Seismic ground vibrations give advanced early-warning of subglacial floods. Nature Communications, 11 (2504). Online ISSN 2041-1723 https://doi.org/10.1038/s41467-020-15744-5 |
op_doi |
https://doi.org/10.1038/s41467-020-15744-5 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766009693607559168 |