Volcanic ash as fertiliser for the surface ocean.

Langmann, B., Zaksek, K., Hort, M. and Duggen, Svend (2010) Volcanic ash as fertiliser for the surface ocean. Open Access Atmospheric Chemistry and Physics, 10 (8). pp. 3891-3899. DOI 10.5194/acp-10-3891-2010.

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Abstract

Iron is a key limiting micro-nutrient for marine primary productivity. It can be supplied to the ocean by atmospheric dust deposition. Volcanic ash deposition into the ocean represents another external and so far largely neglected source of iron. This study demonstrates strong evidence for natural fertilisation in the iron-limited oceanic area of the NE Pacific, induced by volcanic ash from the eruption of Kasatochi volcano in August 2008. Atmospheric and oceanic conditions were favourable to generate a massive phytoplankton bloom in the NE Pacific Ocean which for the first time strongly suggests a connection between oceanic iron-fertilisation and volcanic ash supply.

Document Type: Article
Keywords: Volcanology; Oceanography
Research affiliation: OceanRep > SFB 574 > C5
OceanRep > SFB 574
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS
Refereed: Yes
Open Access Journal?: Yes
Publisher: Copernicus Publications (EGU)
Contribution Number:
Project
Number
SFB 574
170
Date Deposited: 11 May 2010 10:35
Last Modified: 21 Jan 2019 13:10
URI: https://oceanrep.geomar.de/id/eprint/1553

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