{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363388843750050688.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2002jb002101"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2002JB002101"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2002JB002101"}}],"dc:title":[{"@value":"Very long period oscillations of Mount Erebus Volcano"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The exposed top of the conduit system at Mount Erebus Volcano, Ross Island, Antarctica, is a convecting lava (magma) lake hosting Strombolian eruptions caused by the explosive decompression of large (up to 5 m radius) gas slugs. Short‐period (SP; <jats:italic>f</jats:italic> ≥1 Hz) seismoacoustic eruption seismograms are accompanied by oscillatory very long period (VLP) signals observed in the near field by broadband seismometers 0.7 to 2.5 km from the lava lake. A variable VLP onset, preceding eruptions by several seconds, is followed by a repeatable VLP coda that persists for several minutes until the lava lake recovers to its preeruptive level. VLP signals are dominated by distinct decaying nonharmonic modes, the largest at periods of 20.7, 11.3, and 7.8 s, with respective source <jats:italic>Q</jats:italic> values of approximately 11, 18, and 4. Particle motions indicate a temporally evolving source producing increasingly vertical posteruptive displacements as the signal decays. VLP scalar moments, up to ∼5×10<jats:sup>11</jats:sup> N m, exceed SP moments by an order of magnitude or more, suggesting distinct, though genetically related, SP and VLP source mechanisms. We conclude that VLP signals arise from excitation of a quasi‐linear resonator that is intimately associated with the conduit system and is excited by gravity and inertial forces associated with gas slug ascent, eruption, and magma recharge. VLP signal stability across hundreds of eruptions spanning 5 years, the persistence of the lava lake, and the rapid posteruptive lava lake recovery indicate a stable near‐summit magma reservoir and VLP source process.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380568471862737932","@type":"Researcher","foaf:name":[{"@value":"R. Aster"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Environmental Science New Mexico Institute of Mining and Technology  Socorro New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279106","@type":"Researcher","foaf:name":[{"@value":"S. Mah"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Environmental Science New Mexico Institute of Mining and Technology  Socorro New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279108","@type":"Researcher","foaf:name":[{"@value":"P. Kyle"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Environmental Science New Mexico Institute of Mining and Technology  Socorro New Mexico USA"},{"@value":"New Mexico Bureau of Geology and Mineral Resources  Socorro New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279104","@type":"Researcher","foaf:name":[{"@value":"W. McIntosh"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Environmental Science New Mexico Institute of Mining and Technology  Socorro New Mexico USA"},{"@value":"New Mexico Bureau of Geology and Mineral Resources  Socorro New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279109","@type":"Researcher","foaf:name":[{"@value":"N. Dunbar"}],"jpcoar:affiliationName":[{"@value":"New Mexico Bureau of Geology and Mineral Resources  Socorro New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279105","@type":"Researcher","foaf:name":[{"@value":"J. Johnson"}],"jpcoar:affiliationName":[{"@value":"Hawaii Institute of Geophysics and Planetology University of Hawaii at Manoa  Honolulu Hawaii USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279110","@type":"Researcher","foaf:name":[{"@value":"M. Ruiz"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Environmental Science New Mexico Institute of Mining and Technology  Socorro New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016866153279107","@type":"Researcher","foaf:name":[{"@value":"S. McNamara"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Environmental Science New Mexico Institute of Mining and Technology  Socorro New Mexico USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2003-11","prism:volume":"108","prism:number":"B11","prism:startingPage":"2522"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2002JB002101"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2002JB002101"}],"createdAt":"2003-11-11","modifiedAt":"2024-09-18","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282677587826432","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Transport of ballistic projectiles during the 2015 Aso Strombolian eruptions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567183239346944","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Excitation of airwaves caused by bubble bursting in a cylindrical conduit: Experiments and a model"}]},{"@id":"https://cir.nii.ac.jp/crid/1390856660872292224","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Recent volcanic activity at the Asama volcano and long-period seismic signals"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2002jb002101"},{"@type":"CROSSREF","@value":"10.1029/2009jb006828_references_DOI_4TT4zRLjxtHspEjd1Yv3hkjSFpB"},{"@type":"CROSSREF","@value":"10.1186/s40623-019-1029-3_references_DOI_4TT4zRLjxtHspEjd1Yv3hkjSFpB"},{"@type":"CROSSREF","@value":"10.2183/pjab.98.022_references_DOI_4TT4zRLjxtHspEjd1Yv3hkjSFpB"}]}