Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources
Iceland has extremely active dust sources that result in large-scale emissions and deposition on land and at sea. The dust has a volcanogenic origin of basaltic composition with about 10% Fe content. We used two independent methods to quantify dust emission from Iceland and dust deposition at sea. F...
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2014
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Online Access: | https://doi.org/10.5194/bg-11-6623-2014 https://doaj.org/article/54430c9c485c4d3eab0b7c0f592827a8 |
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ftdoajarticles:oai:doaj.org/article:54430c9c485c4d3eab0b7c0f592827a8 2023-05-15T16:43:57+02:00 Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources O. Arnalds H. Olafsson P. Dagsson-Waldhauserova 2014-12-01T00:00:00Z https://doi.org/10.5194/bg-11-6623-2014 https://doaj.org/article/54430c9c485c4d3eab0b7c0f592827a8 EN eng Copernicus Publications http://www.biogeosciences.net/11/6623/2014/bg-11-6623-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6623-2014 https://doaj.org/article/54430c9c485c4d3eab0b7c0f592827a8 Biogeosciences, Vol 11, Iss 23, Pp 6623-6632 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-6623-2014 2022-12-31T13:31:47Z Iceland has extremely active dust sources that result in large-scale emissions and deposition on land and at sea. The dust has a volcanogenic origin of basaltic composition with about 10% Fe content. We used two independent methods to quantify dust emission from Iceland and dust deposition at sea. Firstly, the aerial extent (map) of deposition on land was extended to ocean areas around Iceland. Secondly, surveys of the number of dust events over the past decades and calculations of emissions and sea deposition for the dust storms were made. The results show that total emissions range from 30.5 (dust-event-based calculation) to 40.1 million t yr −1 (map calculation), which places Iceland among the most active dust sources on Earth. Ocean deposition ranges between 5.5 (dust event calculations) and 13.8 million tons (map calculation). Calculated iron deposition from Icelandic dust ranges between 0.567 and 1.4 million tons, which are distributed over wide areas (>370 000 km 2 ) and consist of fine reactive volcanic materials. The paper provides the first quantitative estimate of total dust emissions and oceanic deposition from Iceland. Iron is a limiting nutrient for primary production in the oceans around Iceland, and the dust is likely to affect Fe levels in Icelandic ocean waters. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Biogeosciences 11 23 6623 6632 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 O. Arnalds H. Olafsson P. Dagsson-Waldhauserova Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Iceland has extremely active dust sources that result in large-scale emissions and deposition on land and at sea. The dust has a volcanogenic origin of basaltic composition with about 10% Fe content. We used two independent methods to quantify dust emission from Iceland and dust deposition at sea. Firstly, the aerial extent (map) of deposition on land was extended to ocean areas around Iceland. Secondly, surveys of the number of dust events over the past decades and calculations of emissions and sea deposition for the dust storms were made. The results show that total emissions range from 30.5 (dust-event-based calculation) to 40.1 million t yr −1 (map calculation), which places Iceland among the most active dust sources on Earth. Ocean deposition ranges between 5.5 (dust event calculations) and 13.8 million tons (map calculation). Calculated iron deposition from Icelandic dust ranges between 0.567 and 1.4 million tons, which are distributed over wide areas (>370 000 km 2 ) and consist of fine reactive volcanic materials. The paper provides the first quantitative estimate of total dust emissions and oceanic deposition from Iceland. Iron is a limiting nutrient for primary production in the oceans around Iceland, and the dust is likely to affect Fe levels in Icelandic ocean waters. |
format |
Article in Journal/Newspaper |
author |
O. Arnalds H. Olafsson P. Dagsson-Waldhauserova |
author_facet |
O. Arnalds H. Olafsson P. Dagsson-Waldhauserova |
author_sort |
O. Arnalds |
title |
Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources |
title_short |
Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources |
title_full |
Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources |
title_fullStr |
Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources |
title_full_unstemmed |
Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources |
title_sort |
quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from icelandic dust sources |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-6623-2014 https://doaj.org/article/54430c9c485c4d3eab0b7c0f592827a8 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Biogeosciences, Vol 11, Iss 23, Pp 6623-6632 (2014) |
op_relation |
http://www.biogeosciences.net/11/6623/2014/bg-11-6623-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6623-2014 https://doaj.org/article/54430c9c485c4d3eab0b7c0f592827a8 |
op_doi |
https://doi.org/10.5194/bg-11-6623-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
23 |
container_start_page |
6623 |
op_container_end_page |
6632 |
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1766034277529550848 |