Intra-Eruption Forecasting Using Analogue Volcano and Eruption Sets

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dc.citation.issue6
dc.citation.volume127
dc.contributor.authorBebbington MS
dc.contributor.authorJenkins SF
dc.date.accessioned2023-11-02T19:05:23Z
dc.date.accessioned2023-11-03T05:06:35Z
dc.date.available2022-06-14
dc.date.available2023-11-02T19:05:23Z
dc.date.available2023-11-03T05:06:35Z
dc.date.issued2022-06-23
dc.description.abstractForecasting the likely style and chronology of activity within an eruption is a complex issue that has received far less attention than forecasting the onset and/or the magnitude. By developing a global data set of coded phases (discrete styles of activity within previous eruptions), we can model the resulting data using a semi-Markov chain. Given enough data, we were able to examine the question of whether analogue-based strategies for subsetting the data can improve forecasting performance of phase chronology and style within ongoing eruptions. This work required inclusion of a “null analogue” element to ensure no surprises, that is, phase transitions or durations that were not in the data set and hence cannot be predicted. We have significantly expanded, and made available, our curated data set on eruption phases, which now contains 2670 eruptions (6871 phases), of which 56% are multi-phase. This increases the data set by 283% and includes 95% of Holocene eruptions with text descriptions. We find that, with the notable exception of shields, limiting the analogue set on the basis of volcano morphology and/or composition is not significantly more informative than using the entire data set. Dynamically adjusting the data limits by eliminating eruptions without the observed phase as the eruption progresses provided little benefit, although subsetting on the basis of VEI may have some utility. At the individual volcano level, non-analogue models can outperform the entire data set, if the target volcano has relatively unique behavior and/or a large enough record of phased eruptions.
dc.description.confidentialfalse
dc.edition.editionJune 2022
dc.identifier.citationBebbington MS, Jenkins SF. (2022). Intra-Eruption Forecasting Using Analogue Volcano and Eruption Sets. Journal of Geophysical Research: Solid Earth. 127. 6.
dc.identifier.doi10.1029/2022JB024343
dc.identifier.eissn2169-9356
dc.identifier.elements-typejournal-article
dc.identifier.issn2169-9313
dc.identifier.numbere2022JB024343
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/69061
dc.languageEnglish
dc.publisherJohn Wiley and Sons, Inc on behalf of the American Geophysical Union
dc.publisher.urihttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JB024343
dc.relation.isPartOfJournal of Geophysical Research: Solid Earth
dc.rights(c) 2022 The Author/s
dc.rightsCC BY-NC-ND 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectintra-eruption chronology
dc.subjecteruption forecasting
dc.subjectmulti-phase eruptions
dc.subjectvolcano and eruption analogs
dc.subjecteruption phases data set
dc.titleIntra-Eruption Forecasting Using Analogue Volcano and Eruption Sets
dc.typeJournal article
pubs.elements-id454653
pubs.organisational-groupOther
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