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dc.contributor.authorConstantinescu, R
dc.contributor.authorWhite, JT
dc.contributor.authorConnor, C
dc.contributor.authorCole, P
dc.contributor.authorFontijn, K
dc.contributor.authorBarclay, J
dc.contributor.authorRobertson, R
dc.date.accessioned2023-06-15T12:52:35Z
dc.date.available2023-06-15T12:52:35Z
dc.date.issued2024-01-05
dc.identifier.issn2041-4927
dc.identifier.issn2041-4927
dc.identifier.urihttps://pearl.plymouth.ac.uk/handle/10026.1/20975
dc.description.abstract

Eruption source parameters (ESPs) used to characterize explosive eruptions are estimated from tephra deposit data using different models (statistical or numerical) and inversion approaches. The ESPs thus derived are subject to substantial uncertainties when the bulk of the tephra deposit, including information about its full spatial extent and spatial variation in grain size distribution is missing due to geographic and environmental conditions. We use an advection-diffusion model coupled with a Bayesian inversion and uncertainty quantification algorithm to investigate how ESPs can be robustly estimated given such conditions. The 2021 eruption of La Soufrière Volcano (St. Vincent and the Grenadines) is our case study. An inversion is conducted for the first two explosive phases of this eruption (U1 and U2). We estimate: an erupted mass of 3.3 × 1010 ± 1 × 1010 kg for U1 and 3.1 × 1010 ± 1.9 × 109 kg for U2, with an average particles release height of ∼13.5 km a.s.l. ± 0.5 km for both phases. Given the efficiency of the proposed approach and the plausibility of the stochastic inversion results, we recommend this procedure for estimating ESPs for explosive eruptions for which the bulk of the deposit is missing or is inaccessible.

dc.format.extent107-120
dc.languageen
dc.publisherThe Geological Society
dc.subject37 Earth Sciences
dc.subject3703 Geochemistry
dc.subject3705 Geology
dc.subject3706 Geophysics
dc.titleEstimation of eruption source parameters for the 2021 La Soufrière eruption (St. Vincent): implications for quantification of eruption magnitude on volcanic islands
dc.typejournal-article
dc.typeJournal Article
plymouth.issue1
plymouth.volume539
plymouth.publisher-urlhttp://dx.doi.org/10.1144/sp539-2023-38
plymouth.publication-statusPublished
plymouth.journalGeological Society Special Publications
dc.identifier.doi10.1144/SP539-2023-38
plymouth.organisational-group|Plymouth
plymouth.organisational-group|Plymouth|Faculty of Science and Engineering
plymouth.organisational-group|Plymouth|Faculty of Science and Engineering|School of Geography, Earth and Environmental Sciences
plymouth.organisational-group|Plymouth|REF 2021 Researchers by UoA
plymouth.organisational-group|Plymouth|Users by role
plymouth.organisational-group|Plymouth|Users by role|Academics
plymouth.organisational-group|Plymouth|REF 2021 Researchers by UoA|UoA07 Earth Systems and Environmental Sciences
dcterms.dateAccepted2023-05-29
dc.date.updated2023-06-15T12:52:34Z
dc.rights.embargodate2023-6-20
dc.identifier.eissn2041-4927
dc.rights.embargoperiodforever
rioxxterms.versionofrecord10.1144/SP539-2023-38


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