Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland
On the 17 June 2017, a massive landslide which mobilized 35–58 million m3 of material entered the Karrat Isfjord in western Greenland. It triggered a tsunami wave with a runup height exceeding 90 m close to the landslide, ca. 50 m on the opposite shore of the fjord. The tsunami travelled ca. 32 km a...
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Copernicus Publications
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Online Access: | https://doi.org/10.5194/nhess-20-2521-2020 https://nhess.copernicus.org/articles/20/2521/2020/nhess-20-2521-2020.pdf https://doaj.org/article/8355514a29bf49d4a70aba072f04a9fe |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:8355514a29bf49d4a70aba072f04a9fe 2023-05-15T15:07:53+02:00 Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland M. C. Strzelecki M. W. Jaskólski 2020-09-01 https://doi.org/10.5194/nhess-20-2521-2020 https://nhess.copernicus.org/articles/20/2521/2020/nhess-20-2521-2020.pdf https://doaj.org/article/8355514a29bf49d4a70aba072f04a9fe en eng Copernicus Publications doi:10.5194/nhess-20-2521-2020 1561-8633 1684-9981 https://nhess.copernicus.org/articles/20/2521/2020/nhess-20-2521-2020.pdf https://doaj.org/article/8355514a29bf49d4a70aba072f04a9fe undefined Natural Hazards and Earth System Sciences, Vol 20, Pp 2521-2534 (2020) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/nhess-20-2521-2020 2023-01-22T17:37:50Z On the 17 June 2017, a massive landslide which mobilized 35–58 million m3 of material entered the Karrat Isfjord in western Greenland. It triggered a tsunami wave with a runup height exceeding 90 m close to the landslide, ca. 50 m on the opposite shore of the fjord. The tsunami travelled ca. 32 km along the fjord and reached the settlement of Nuugaatsiaq with ca. 1–1.5 m high waves which flooded the terrain up to 9 m a.s.l. (above sea level). Tsunami waves were powerful enough to destroy the community infrastructure, impact fragile coastal tundra landscape, and unfortunately injure several inhabitants and cause four deaths. Our field survey carried out 25 months after the event results in documentation of the previously unreported scale of damage in the settlement (ca. 48 % of infrastructure objects including houses and administration buildings were destroyed by the tsunami). We have observed a recognizable difference in the concentration of tsunami deposit accumulations between areas of the settlement overwashed by the wave and areas of runup and return flow. The key tsunami effects preserved in the coastal landscape were eroded coastal bluffs, gullied and dissected edges of cliffed coast in the harbour, and tundra vegetation compressed by boulders or icebergs rafted onshore during the event. Article in Journal/Newspaper Arctic Greenland Iceberg* Nuugaatsiaq Tundra Unknown Arctic Greenland Isfjord ENVELOPE(-26.917,-26.917,73.333,73.333) Karrat Isfjord ENVELOPE(-52.583,-52.583,71.583,71.583) Nuugaatsiaq ENVELOPE(-53.212,-53.212,71.536,71.536) Natural Hazards and Earth System Sciences 20 9 2521 2534 |
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English |
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geo envir |
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geo envir M. C. Strzelecki M. W. Jaskólski Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland |
topic_facet |
geo envir |
description |
On the 17 June 2017, a massive landslide which mobilized 35–58 million m3 of material entered the Karrat Isfjord in western Greenland. It triggered a tsunami wave with a runup height exceeding 90 m close to the landslide, ca. 50 m on the opposite shore of the fjord. The tsunami travelled ca. 32 km along the fjord and reached the settlement of Nuugaatsiaq with ca. 1–1.5 m high waves which flooded the terrain up to 9 m a.s.l. (above sea level). Tsunami waves were powerful enough to destroy the community infrastructure, impact fragile coastal tundra landscape, and unfortunately injure several inhabitants and cause four deaths. Our field survey carried out 25 months after the event results in documentation of the previously unreported scale of damage in the settlement (ca. 48 % of infrastructure objects including houses and administration buildings were destroyed by the tsunami). We have observed a recognizable difference in the concentration of tsunami deposit accumulations between areas of the settlement overwashed by the wave and areas of runup and return flow. The key tsunami effects preserved in the coastal landscape were eroded coastal bluffs, gullied and dissected edges of cliffed coast in the harbour, and tundra vegetation compressed by boulders or icebergs rafted onshore during the event. |
format |
Article in Journal/Newspaper |
author |
M. C. Strzelecki M. W. Jaskólski |
author_facet |
M. C. Strzelecki M. W. Jaskólski |
author_sort |
M. C. Strzelecki |
title |
Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland |
title_short |
Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland |
title_full |
Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland |
title_fullStr |
Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland |
title_full_unstemmed |
Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland |
title_sort |
arctic tsunamis threaten coastal landscapes and communities – survey of karrat isfjord 2017 tsunami effects in nuugaatsiaq, western greenland |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/nhess-20-2521-2020 https://nhess.copernicus.org/articles/20/2521/2020/nhess-20-2521-2020.pdf https://doaj.org/article/8355514a29bf49d4a70aba072f04a9fe |
long_lat |
ENVELOPE(-26.917,-26.917,73.333,73.333) ENVELOPE(-52.583,-52.583,71.583,71.583) ENVELOPE(-53.212,-53.212,71.536,71.536) |
geographic |
Arctic Greenland Isfjord Karrat Isfjord Nuugaatsiaq |
geographic_facet |
Arctic Greenland Isfjord Karrat Isfjord Nuugaatsiaq |
genre |
Arctic Greenland Iceberg* Nuugaatsiaq Tundra |
genre_facet |
Arctic Greenland Iceberg* Nuugaatsiaq Tundra |
op_source |
Natural Hazards and Earth System Sciences, Vol 20, Pp 2521-2534 (2020) |
op_relation |
doi:10.5194/nhess-20-2521-2020 1561-8633 1684-9981 https://nhess.copernicus.org/articles/20/2521/2020/nhess-20-2521-2020.pdf https://doaj.org/article/8355514a29bf49d4a70aba072f04a9fe |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/nhess-20-2521-2020 |
container_title |
Natural Hazards and Earth System Sciences |
container_volume |
20 |
container_issue |
9 |
container_start_page |
2521 |
op_container_end_page |
2534 |
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