Repository logo

Volatile metal emissions from volcanic degassing and lava–seawater interactions at Kīlauea Volcano, Hawai’i

Published version

Change log


jats:titleAbstract</jats:title>jats:pVolcanoes represent one of the largest natural sources of metals to the Earth’s surface. Emissions of these metals can have important impacts on the biosphere as pollutants or nutrients. Here we use ground- and drone-based direct measurements to compare the gas and particulate chemistry of the magmatic and lava–seawater interaction (laze) plumes from the 2018 eruption of Kīlauea, Hawai’i. We find that the magmatic plume contains abundant volatile metals and metalloids whereas the laze plume is further enriched in copper and seawater components, like chlorine, with volatile metals also elevated above seawater concentrations. Speciation modelling of magmatic gas mixtures highlights the importance of the Sjats:sup2−</jats:sup> ligand in highly volatile metal/metalloid degassing at the magmatic vent. In contrast, volatile metal enrichments in the laze plume can be explained by affinity for chloride complexation during late-stage degassing of distal lavas, which is potentially facilitated by the HCl gas formed as seawater boils.</jats:p>



37 Earth Sciences, 3703 Geochemistry, 3705 Geology, 3706 Geophysics

Journal Title

Communications Earth and Environment

Conference Name

Journal ISSN


Volume Title



Springer Science and Business Media LLC
EPSRC (1943898)
Natural Environment Research Council (NE/N009312/1)
Natural Environment Research Council (NE/P015271/1)
Natural Environment Research Council (NE/R009465/1)
Natural Environment Research Council (NE/S00436X/1)
Is supplemented by:
Is derived from: