dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Dürig, Tobias |
dc.contributor.author |
White, J. D. L. |
dc.contributor.author |
Zimanowski, B. |
dc.contributor.author |
Büttner, R. |
dc.contributor.author |
Murch, A. |
dc.contributor.author |
Carey, R. J. |
dc.date.accessioned |
2020-12-08T12:49:09Z |
dc.date.available |
2020-12-08T12:49:09Z |
dc.date.issued |
2020-09-30 |
dc.identifier.citation |
Dürig, T., White, J.D.L., Zimanowski, B. et al. Deep-sea fragmentation style of Havre revealed by dendrogrammatic analyses of particle morphometry. Bull Volcanol 82, 67 (2020). https://doi.org/10.1007/s00445-020-01408-1 |
dc.identifier.issn |
0258-8900 |
dc.identifier.issn |
1432-0819 (eISSN) |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/2285 |
dc.description.abstract |
In 2012, the eruption of deep-sea volcano Havre produced an abundance of fine ash at a depth of ~ 1000 m below sea level. In this study the 2D shapes of Havre ash grains retrieved from the seafloor were compared quantitatively with those of particles generated in a suite of different fragmentation experiments, which used remelted rhyolitic rock and pumice from the eruption site. A new statistical data analysis technique, denoted as Dendrogrammatic Analysis of Particle Morphology (DAPM) is introduced. It is designed to compare large numbers of morphometric data sets containing shape information for a set of ash particles to group them by morphological similarities and to visualize these clusters in a dendrogram. Further steps involve t tests and equivalence tests and reveal morphometric differences as well as matching features. The DAPM suggests that the majority of Havre ash was thermohydraulically produced by induced fuel coolant-interaction. A subset of ash particles features an elongated tube morphology. Their morphometry matches that of particles that were experimentally produced by a combination of shearing and quenching, and we infer that the natural particles were formed by synextrusive ash-venting. |
dc.description.sponsorship |
This study was supported by MARSDEN grant U001616; Havre samples were obtained with NSF funding EAR1447559. T.D. is supported by the Icelandic Research Fund (Rannís) Grant Nr. 206527-051. R.J.C. was funded by Australian Research Council grants DP110102196 and DE150101190, and by US National Science Foundation grant OCE1357443. |
dc.format.extent |
67 |
dc.language.iso |
en |
dc.publisher |
Springer Science and Business Media LLC |
dc.relation.ispartofseries |
Bulletin of Volcanology;82(10) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Volcanology |
dc.subject |
Tephra |
dc.subject |
Particle morphometry |
dc.subject |
Geosciences |
dc.subject |
SEM microscopy |
dc.subject |
Eldfjallafræði |
dc.subject |
Gjóska |
dc.title |
Deep-sea fragmentation style of Havre revealed by dendrogrammatic analyses of particle morphometry |
dc.type |
info:eu-repo/semantics/article |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Bulletin of Volcanology |
dc.identifier.doi |
10.1007/s00445-020-01408-1 |
dc.contributor.department |
Jarðvísindastofnun (HÍ) |
dc.contributor.department |
Institute of Earth Sciences (UI) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |