Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/15494
DC Field | Value | Language |
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dc.date.accessioned | 2022-02-25T10:26:59Z | - |
dc.date.available | 2022-02-25T10:26:59Z | - |
dc.date.issued | 2021 | - |
dc.identifier.uri | http://hdl.handle.net/2122/15494 | - |
dc.description.abstract | Most basaltic explosive eruptions intensify abruptly, allowing little time to document processes at the start of eruption. One opportunity came with the initiation of activity from fissure 8 (F8) during the 2018 eruption on the lower East Rift Zone of Kīlauea, Hawaii. F8 erupted in four episodes. We recorded 28 min of high-definition video during a 51-min period, capturing the onset of the second episode on 5 May. From the videos, we were able to analyze the following in-flight parameters: frequency and duration of explosions; ejecta heights; pyroclast exit velocities; in-flight total mass and estimated mass eruption rates; and the in-flight total grain size distributions. The videos record a transition from initial pulsating outgassing, via spaced, but increasingly rapid, discrete explosions, to quasisustained, unsteady fountaining. This transition accompanied waxing intensity (mass flux) of the F8 eruption. We infer that all activity was driven by a combination of the ascent of a coupled mixture of small bubbles and melt, and the buoyant rise of decoupled gas slugs and/or pockets. The balance between these two types of concurrent flow determined the exact form of the eruptive activity at any point in time, and changes to their relative contributions drove the transition we observed at early F8. Qualitative observations of other Hawaiian fountains at Kīlauea suggest that this physical model may apply more generally. This study demonstrates the value of in-flight parameters derived from high-resolution videos, which offer a rapid and highly timesensitive alternative to measurements based on sampling of deposits posteruption. | en_US |
dc.language.iso | English | en_US |
dc.publisher.name | Wiley-AGU | en_US |
dc.relation.ispartof | Journal of Geophysical Research: Solid Earth | en_US |
dc.relation.ispartofseries | /126 (2021) | en_US |
dc.title | The Birth of a Hawaiian Fissure Eruption | en_US |
dc.type | article | en |
dc.description.status | Published | en_US |
dc.description.pagenumber | e2020JB020903 | en_US |
dc.identifier.doi | 10.1029/2020JB020903 | en_US |
dc.description.obiettivoSpecifico | 5V. Processi eruttivi e post-eruttivi | en_US |
dc.description.journalType | JCR Journal | en_US |
dc.contributor.author | Houghton, B. F. | - |
dc.contributor.author | Tisdale, C. M. | - |
dc.contributor.author | Llewellin, E. W. | - |
dc.contributor.author | Taddeucci, Jacopo | - |
dc.contributor.author | Orr, T. R. | - |
dc.contributor.author | Walker, B.H. | - |
dc.contributor.author | Patrick, Matthew R | - |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en_US |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Geology and Geophysics, SOEST, University of Hawaii, Honolulu, USA | - |
crisitem.author.dept | University of Durham (UK) | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | U. S. Geological Survey, Hawaiian Volcano Observatory, PO Box 51, Hawaii National Park, Hawaii 96718-0051, USA | - |
crisitem.author.dept | Hawaii Institute of Geophysics and Planetology and School of Ocean and Earth Science and Technology, University of Hawai'i at Manoa, | - |
crisitem.author.orcid | 0000-0002-0516-3699 | - |
crisitem.author.orcid | 0000-0003-1157-7588 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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File | Description | Size | Format | |
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2018_Kilauea_Birth_of_a_Fountain_preprint.docx | Open Access pre-print version | 14.06 MB | Microsoft Word XML | View/Open |
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