{"@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/1360848656178442880.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1007/s00445-013-0775-5"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1007/s00445-013-0775-5.pdf"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/article/10.1007/s00445-013-0775-5/fulltext.html"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1007/s00445-013-0775-5"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Sulfur dioxide emissions related to volcanic activity at Asama volcano, Japan"}],"description":[{"notation":[{"@value":"A 40-year-long record of the sulfur dioxide (SO2) emission rate of Asama volcano, Japan, is presented including high-temporal-resolution data since the 2004 eruption. The 2004 and 2008–2009 eruptive activities were associated with high SO2 emission, and SO2 emission rates markedly fluctuated. In contrast, stable and weak SO2 emissions have been observed for the rest of the investigated interval. The fluctuation of the SO2 emission rates is correlated with the number of shallow low-frequency B-type earthquakes, implying that increased flows of gas and/or magma induced the B-type earthquakes along the shallow conduit. The total volumes of outgassed magma during the 2004 and 2008–2009 eruptive activities are estimated to be 1.9 × 108 and 1.5 × 108 m3, respectively. These volumes are about 100–200 times larger than those of the erupted magma, indicating that the large volumes of the magma were outgassed without being erupted (i.e., excess degassing/outgassing). Degassing and outgassing driven by magma convection rather than by permeable gas flow in the conduit is concluded as the probable degassing/outgassing process of Asama volcano based on model examinations, and is thought to occur regardless of the outgassing intensity. Production rates of outgassed magma related to the 2004 and 2008–2009 eruptive periods are estimated to have been 7.4 × 103 and 6.7 × 103 kg/s, respectively. These values are one order of magnitude higher than the average production rate of 0.92 × 103 kg/s for the inactive periods. Increased supply of fresh magma is thought to activate magma convection in the conduit and to thereby increase magma degassing/outgassing."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848656178442881","@type":"Researcher","foaf:name":[{"@value":"Michiko Ohwada"}]},{"@id":"https://cir.nii.ac.jp/crid/1420845751140620544","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"50356763"},{"@type":"NRID","@value":"1000050356763"},{"@type":"NRID","@value":"9000002496667"},{"@type":"NRID","@value":"9000252883458"}],"foaf:name":[{"@value":"Kohei Kazahaya"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848656178442638","@type":"Researcher","foaf:name":[{"@value":"Toshiya Mori"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848656178442625","@type":"Researcher","foaf:name":[{"@value":"Ryunosuke Kazahaya"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848656178442889","@type":"Researcher","foaf:name":[{"@value":"Jun-ichi Hirabayashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848656178442760","@type":"Researcher","foaf:name":[{"@value":"Makoto Miyashita"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848656178442887","@type":"Researcher","foaf:name":[{"@value":"Shin’ya Onizawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848656178442752","@type":"Researcher","foaf:name":[{"@value":"Takehiko Mori"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"02588900"},{"@type":"EISSN","@value":"14320819"}],"prism:publicationName":[{"@value":"Bulletin of Volcanology"}],"dc:publisher":[{"@value":"Springer Science and Business Media LLC"}],"prism:publicationDate":"2013-11-14","prism:volume":"75","prism:number":"12","prism:startingPage":"775"},"reviewed":"false","dc:rights":["http://www.springer.com/tdm"],"url":[{"@id":"http://link.springer.com/content/pdf/10.1007/s00445-013-0775-5.pdf"},{"@id":"http://link.springer.com/article/10.1007/s00445-013-0775-5/fulltext.html"},{"@id":"http://link.springer.com/content/pdf/10.1007/s00445-013-0775-5"}],"createdAt":"2013-11-13","modifiedAt":"2019-08-01","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782062875136","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"21109006"},{"@type":"JGN","@value":"JP21109006"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-21109006/"}],"notation":[{"@language":"ja","@value":"地殻流体の発生と移動のダイナミクス"},{"@language":"en","@value":"Generation and migration dynamics of geofluids"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050869456405311104","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Magmatic–hydrothermal system of Aso Volcano, Japan, inferred from electrical resistivity structures"}]},{"@id":"https://cir.nii.ac.jp/crid/1360002216057152384","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Monitoring of volcanic gas composition at Asama volcano, Japan, during 2004–2014"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011143555581312","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Gas emissions from failed and actual eruptions from Cook Inlet Volcanoes, Alaska, 1989–2006"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011146178896512","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Modelling the dynamics and thermodynamics of volcanic degassing"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283691684352256","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Detecting a mass change inside a volcano by cosmic‐ray muon radiography (muography): First results from measurements at Asama volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292620110103936","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Densities of Na2O-K2O-CaO-MgO-FeO-Fe2O3-Al2O3-TiO2-SiO2 liquids: New measurements and derived partial molar properties"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292621443419776","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Magma supply path beneath Mt. 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