Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes
Patagonia, due to its geographic position and the dominance of westerly winds, is a key area that contributes to the supply of nutrients to the Southern Ocean, both through mineral dust and through the periodic deposits of volcanic ash. Here we evaluate the characteristics of Fe dissolved (into solu...
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ftnuigalway:oai:https://researchrepository.universityofgalway.ie:10379/13920 2024-09-30T14:44:03+00:00 Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes Simonella, L. E. Palomeque, M. E. Croot, P. L. Stein, A. Kupczewski, M. Rosales, A. Montes, M. L. Colombo, F. García, M. G. Villarosa, G. Gaiero, D. M. 2015-08-01 http://hdl.handle.net/10379/13920 https://doi.org/10.13025/27516 https://doi.org/10.1002/2015gb005177 unknown Wiley-Blackwell Global Biogeochemical Cycles Simonella, L. E. Palomeque, M. E.; Croot, P. L.; Stein, A.; Kupczewski, M.; Rosales, A.; Montes, M. L.; Colombo, F.; García, M. G.; Villarosa, G.; Gaiero, D. M. (2015). Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes. Global Biogeochemical Cycles 29 (8), 1125-1144 0886-6236 http://hdl.handle.net/10379/13920 https://doi.org/10.13025/27516 doi:10.1002/2015gb005177 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ chaiten volcano hudson volcano mineral dust biogeochemical cycle atlantic sector dissolved iron surface ocean metal-salts chile transport Article 2015 ftnuigalway https://doi.org/10.13025/2751610.1002/2015gb005177 2024-09-17T14:44:30Z Patagonia, due to its geographic position and the dominance of westerly winds, is a key area that contributes to the supply of nutrients to the Southern Ocean, both through mineral dust and through the periodic deposits of volcanic ash. Here we evaluate the characteristics of Fe dissolved (into soluble and colloidal species) from volcanic ash for three recent southern Andes volcanic eruptions having contrasting features and chemical compositions. Contact between cloud waters (wet deposition) and end-members of andesitic (Hudson volcano) and rhyolitic (Chaiten volcano) materials was simulated. Results indicate higher Fe release and faster liberation rates in the andesitic material. Fe release during particle-seawater interaction (dry deposition) has higher rates in rhyolitic-type ashes. Rhyolitic ashes under acidic conditions release Fe in higher amounts and at a slower rate, while in those samples containing mostly glass shards, Fe release was lower and faster. The 2011 Puyehue eruption was observed by a dustmonitoring station. Puyehue-type eruptions can contribute soluble Fe to the ocean via dry or wet deposition, nearly reaching the limit required for phytoplankton growth. In contrast, the input of Fe after processing by an acidic eruption plume could raise the amount of dissolved Fe in surface ocean waters several times, above the threshold required to initiate phytoplankton blooms. A single eruption like the Puyehue one represents more than half of the yearly Fe flux contributed by dust. Article in Journal/Newspaper Southern Ocean National University of Ireland (NUI), Galway: ARAN Hudson Patagonia Southern Ocean |
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Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
unknown |
topic |
chaiten volcano hudson volcano mineral dust biogeochemical cycle atlantic sector dissolved iron surface ocean metal-salts chile transport |
spellingShingle |
chaiten volcano hudson volcano mineral dust biogeochemical cycle atlantic sector dissolved iron surface ocean metal-salts chile transport Simonella, L. E. Palomeque, M. E. Croot, P. L. Stein, A. Kupczewski, M. Rosales, A. Montes, M. L. Colombo, F. García, M. G. Villarosa, G. Gaiero, D. M. Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
topic_facet |
chaiten volcano hudson volcano mineral dust biogeochemical cycle atlantic sector dissolved iron surface ocean metal-salts chile transport |
description |
Patagonia, due to its geographic position and the dominance of westerly winds, is a key area that contributes to the supply of nutrients to the Southern Ocean, both through mineral dust and through the periodic deposits of volcanic ash. Here we evaluate the characteristics of Fe dissolved (into soluble and colloidal species) from volcanic ash for three recent southern Andes volcanic eruptions having contrasting features and chemical compositions. Contact between cloud waters (wet deposition) and end-members of andesitic (Hudson volcano) and rhyolitic (Chaiten volcano) materials was simulated. Results indicate higher Fe release and faster liberation rates in the andesitic material. Fe release during particle-seawater interaction (dry deposition) has higher rates in rhyolitic-type ashes. Rhyolitic ashes under acidic conditions release Fe in higher amounts and at a slower rate, while in those samples containing mostly glass shards, Fe release was lower and faster. The 2011 Puyehue eruption was observed by a dustmonitoring station. Puyehue-type eruptions can contribute soluble Fe to the ocean via dry or wet deposition, nearly reaching the limit required for phytoplankton growth. In contrast, the input of Fe after processing by an acidic eruption plume could raise the amount of dissolved Fe in surface ocean waters several times, above the threshold required to initiate phytoplankton blooms. A single eruption like the Puyehue one represents more than half of the yearly Fe flux contributed by dust. |
format |
Article in Journal/Newspaper |
author |
Simonella, L. E. Palomeque, M. E. Croot, P. L. Stein, A. Kupczewski, M. Rosales, A. Montes, M. L. Colombo, F. García, M. G. Villarosa, G. Gaiero, D. M. |
author_facet |
Simonella, L. E. Palomeque, M. E. Croot, P. L. Stein, A. Kupczewski, M. Rosales, A. Montes, M. L. Colombo, F. García, M. G. Villarosa, G. Gaiero, D. M. |
author_sort |
Simonella, L. E. |
title |
Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
title_short |
Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
title_full |
Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
title_fullStr |
Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
title_full_unstemmed |
Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
title_sort |
soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes |
publisher |
Wiley-Blackwell |
publishDate |
2015 |
url |
http://hdl.handle.net/10379/13920 https://doi.org/10.13025/27516 https://doi.org/10.1002/2015gb005177 |
geographic |
Hudson Patagonia Southern Ocean |
geographic_facet |
Hudson Patagonia Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Global Biogeochemical Cycles Simonella, L. E. Palomeque, M. E.; Croot, P. L.; Stein, A.; Kupczewski, M.; Rosales, A.; Montes, M. L.; Colombo, F.; García, M. G.; Villarosa, G.; Gaiero, D. M. (2015). Soluble iron inputs to the southern ocean through recent andesitic to rhyolitic volcanic ash eruptions from the patagonian andes. Global Biogeochemical Cycles 29 (8), 1125-1144 0886-6236 http://hdl.handle.net/10379/13920 https://doi.org/10.13025/27516 doi:10.1002/2015gb005177 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.13025/2751610.1002/2015gb005177 |
_version_ |
1811645567967690752 |