Soluble iron inputs to the Southern Ocean through recent andesitic to rhyolitic volcanic ash eruptions from the Patagonian Andes
- Simonella, Lucio Esteban
- Palomeque, M. E.
- Croot, P. L.
- Stein, A.
- Kupckezewski, M.
- Rosales, A.
- Montes, María Luciana
- Colombo, Fernando
- Garcia, Maria Gabriela
- Villarosa, Gustavo
- Gaiero, Diego Marcelo
DOIAbstract
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 (Chaitén volcano) materials was simulated. Results indicate higher Fe release and faster liberation rates in the andesitic material. Fe release during particle-seawater interaction (dry deposit...
Add to ORKG