Hydroacoustic records and a numerical model of the source mechanism from the first historical eruption of Anatahan Volcano, Mariana Islands SCIE SCOPUS

DC Field Value Language
dc.contributor.author Dziak, RP -
dc.contributor.author Park, M -
dc.contributor.author Matsumoto, H -
dc.contributor.author Byun, SK -
dc.date.accessioned 2020-04-20T13:55:35Z -
dc.date.available 2020-04-20T13:55:35Z -
dc.date.created 2020-01-28 -
dc.date.issued 2005-08-15 -
dc.identifier.issn 0377-0273 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/5038 -
dc.description.abstract Anatahan Volcano in the Commonwealth of the Northern Mariana Islands (CNMI) erupted for the first time in recorded history on 10 May 2003. The underwater acoustic records (T-waves) of earthquakes, explosions, and tremor produced during the eruption were recorded on a sound channel hydrophone deployed in February 2003. Acoustic propagation models show that the seismic to acoustic conversion at Anatahan is particularly efficient, aided by the upward slope of the seamount toward the hydrophone. The hydrophone records confirm the onset of earthquake activity between 0100 and 0200Z on 10 May, with a substantial increase in seismicity beginning at similar to 0620Z. In addition, the onset of continuous, low-frequency (3-40 Hz) acoustic energy that is likely volcanic tremor related to magma intrusion was also observed at 0620Z. The hydrophone recorded 1401 earthquakes during the first 3 days of the eruption. A histogram of seismicity indicates two main periods of explosion/eruption activity, the first beginning at similar to 0620Z on 10 May and the second at similar to 0000Z on I I May. Relative earthquake depth estimates indicate that both eruption periods were accompanied by earthquake activity from deep within the Anatahan volcanic edifice. A numerical representation of the Anatahan volcano-seismic source was developed to examine the character of acoustic signals generated from the eruption governed by the geometry of the source and the physical properties of the magma. A magma pipe source mechanism is used to compute the seismo-acoustic wavefield on the flank of the Anatahan volcanic edifice (on the seafloor and in the water column) due to mode conversion by roughness scattering. A fluid-filled pipe model was chosen because it allows for a more straightforward relation between volcano geometry and spectral features of harmonic tremor as well as its morphologic similarity to a submerged volcanic edifice. (c) 2005 Elsevier B.V. All rights reserved. -
dc.description.uri 1 -
dc.language English -
dc.publisher ELSEVIER SCIENCE BV -
dc.subject FLUID-DRIVEN CRACK -
dc.subject DE-FUCA RIDGE -
dc.subject T-WAVES -
dc.subject EARTHQUAKES -
dc.subject TREMOR -
dc.subject SEISMICITY -
dc.subject EXCITATION -
dc.subject SCATTERING -
dc.subject PHASES -
dc.subject EVENT -
dc.title Hydroacoustic records and a numerical model of the source mechanism from the first historical eruption of Anatahan Volcano, Mariana Islands -
dc.type Article -
dc.citation.endPage 101 -
dc.citation.startPage 86 -
dc.citation.title JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH -
dc.citation.volume 146 -
dc.citation.number 1-3 -
dc.identifier.bibliographicCitation JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, v.146, no.1-3, pp.86 - 101 -
dc.identifier.doi 10.1016/j.jvolgeores.2004.12.009 -
dc.identifier.scopusid 2-s2.0-23844456712 -
dc.identifier.wosid 000231738500006 -
dc.type.docType Article; Proceedings Paper -
dc.description.journalClass 1 -
dc.subject.keywordPlus FLUID-DRIVEN CRACK -
dc.subject.keywordPlus DE-FUCA RIDGE -
dc.subject.keywordPlus T-WAVES -
dc.subject.keywordPlus EARTHQUAKES -
dc.subject.keywordPlus TREMOR -
dc.subject.keywordPlus SEISMICITY -
dc.subject.keywordPlus EXCITATION -
dc.subject.keywordPlus SCATTERING -
dc.subject.keywordPlus PHASES -
dc.subject.keywordPlus EVENT -
dc.subject.keywordAuthor hydrophone -
dc.subject.keywordAuthor earthquakes -
dc.subject.keywordAuthor tremor -
dc.subject.keywordAuthor seismo-acoustic propagation -
dc.relation.journalWebOfScienceCategory Geosciences, Multidisciplinary -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Geology -
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