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RV Investigator Voyage Summary: HEOBI – Heard Earth-Ocean-Biosphere Interactions

Citation

Coffin, MF, RV Investigator Voyage Summary: HEOBI - Heard Earth-Ocean-Biosphere Interactions, Marine National Facility; CSIRO, Hobart, Tasmania, IN2016_V01 (2016) [Contract Report]


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Abstract

Iron supply limits oceanic primary production in the Southern Ocean as well as elsewhere in the global ocean. We aim to test the hypothesis that hydrothermal activity driven by active submarine magmatism fertilises surface waters with iron, thereby enhancing biological productivity. Heard and McDonald islands on the Kerguelen Plateau are among the world’s most active hotspot volcanoes, and are type examples sourced from a particular geochemical component in the Earth’s mantle (enriched mantle 1, or EM1). Existing data indicate that fields of submarine volcanoes extend for several hundred kilometres away from the islands.

Item Details

Item Type:Contract Report
Keywords:Kerguelen Plateau, Heard Island, McDonald Islands, volcano, iron, hydrothermal, phytoplankton
Research Division:Earth Sciences
Research Group:Geology
Research Field:Marine Geoscience
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Coffin, MF (Professor Mike Coffin)
ID Code:111147
Year Published:2016
Deposited By:Centre for Oceans and Cryosphere
Deposited On:2016-08-31
Last Modified:2016-09-06
Downloads:0

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