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Stronger or longer: discriminating between Hawaiian and Strombolian eruption styles
journal contribution
posted on 2023-05-18, 15:38 authored by Houghton, BF, Taddeucci, J, Andronico, D, Gonnermann, HM, Pistolesi, M, Patrick, MR, Orr, TR, Swanson, DA, Edmonds, M, Gaudin, D, Rebecca CareyRebecca Carey, Scarlato, PThe weakest explosive volcanic eruptions globally, Strombolian explosions and Hawaiian fountaining, are also the most common. Yet, despite over a hundred years of observations, no classifications have offered a convincing, quantitative way of demarcating these two styles. New observations show that the two styles are distinct in their eruptive time scale, with the duration of Hawaiian fountaining exceeding Strombolian explosions by ∼300–10,000 s. This reflects the underlying process of whether shallow-exsolved gas remains trapped in the erupting magma or is decoupled from it. We propose here a classification scheme based on the duration of events (brief explosions versus prolonged fountains) with a cutoff at 300 s that separates transient Strombolian explosions from sustained Hawaiian fountains.
Funding
Australian Research Council
History
Publication title
GeologyVolume
44Pagination
163-166ISSN
0091-7613Department/School
School of Natural SciencesPublisher
Geological Soc AmericaPlace of publication
Boulder, USARights statement
Copyright 2016 Geological Society of AmericaRepository Status
- Restricted