{"@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/1360002215319264000.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1007/s00445-011-0550-4"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1007/s00445-011-0550-4.pdf"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/article/10.1007/s00445-011-0550-4/fulltext.html"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1007/s00445-011-0550-4"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"A water flow model of the active crater lake at Aso volcano, Japan: fluctuations of magmatic gas and groundwater fluxes from the underlying hydrothermal system"}],"description":[{"notation":[{"@value":"The first crater of Nakadake, peak of Aso volcano, Japan, contains a hot water lake that shows interesting variations in water level and temperature. These variations were discovered by precise, continuous observations of the lake independent of precipitation. We developed a numerical model of a hot crater lake and compared with observational data for the period from July 2006 to January 2009. The numerical model revealed seasonal changes in mass flux (75–132 kg/s) and enthalpy (1,840–3,030 kJ/kg) for the fluid supplied to the lake. The relation between the enthalpy and mass flux indicates that the bottom input fluid is a mixture of high- and low-temperature fluids. Assuming a mixture of high-temperature steam at 800°C and liquid water at 100°C, we evaluated the liquid and steam fluxes. The liquid water flux shows a seasonal increase lagging behind the rainy season by 2 months, suggesting that the liquid water is predominantly groundwater. The fluctuation pattern in the flux of the high-temperature steam shows a relation with the amplitude of volcanic tremor, suggesting that heating of the hydrothermal system drives the tremor. Consequently, precise observations of a hot crater lake represent a potential method of monitoring volcanic hydrothermal systems in the shallow parts of the volcanoes."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420564276180611072","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00374215"},{"@type":"NRID","@value":"1000000374215"},{"@type":"NRID","@value":"9000409785534"},{"@type":"NRID","@value":"9000400159771"},{"@type":"NRID","@value":"9000415352753"},{"@type":"NRID","@value":"9000018804878"},{"@type":"NRID","@value":"9000340952768"},{"@type":"NRID","@value":"9000240533237"},{"@type":"NRID","@value":"9000381958622"},{"@type":"NRID","@value":"9000411276806"},{"@type":"NRID","@value":"9000411276805"},{"@type":"NRID","@value":"9000253430056"},{"@type":"NRID","@value":"9000414242619"},{"@type":"NRID","@value":"9000414242620"},{"@type":"NRID","@value":"9000411022597"},{"@type":"NRID","@value":"9000252866152"},{"@type":"NRID","@value":"9000018698163"},{"@type":"NRID","@value":"9000403425809"},{"@type":"NRID","@value":"9000398156360"},{"@type":"NRID","@value":"9000019252164"},{"@type":"NRID","@value":"9000414744537"},{"@type":"NRID","@value":"9000242735790"},{"@type":"NRID","@value":"9000410997503"},{"@type":"NRID","@value":"9000410997502"},{"@type":"NRID","@value":"9000406206657"},{"@type":"NRID","@value":"9000410949071"},{"@type":"NRID","@value":"9000392088844"},{"@type":"NRID","@value":"9000023420149"},{"@type":"NRID","@value":"9000394967773"},{"@type":"NRID","@value":"9000411392436"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/7000017631"}],"foaf:name":[{"@value":"Akihiko Terada"}]},{"@id":"https://cir.nii.ac.jp/crid/1380284918451481345","@type":"Researcher","foaf:name":[{"@value":"Takeshi Hashimoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1380284918451481346","@type":"Researcher","foaf:name":[{"@value":"Tsuneomi Kagiyama"}]}],"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":"2011-10-28","prism:volume":"74","prism:number":"3","prism:startingPage":"641","prism:endingPage":"655"},"reviewed":"false","dc:rights":["http://www.springer.com/tdm"],"url":[{"@id":"http://link.springer.com/content/pdf/10.1007/s00445-011-0550-4.pdf"},{"@id":"http://link.springer.com/article/10.1007/s00445-011-0550-4/fulltext.html"},{"@id":"http://link.springer.com/content/pdf/10.1007/s00445-011-0550-4"}],"createdAt":"2011-10-27","modifiedAt":"2024-04-14","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782132484992","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"22710171"},{"@type":"JGN","@value":"JP22710171"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22710171/"}],"notation":[{"@language":"ja","@value":"火山活動度診断のための新しい熱流計測システムの開発"},{"@language":"en","@value":"A measurement of heat-discharge rate from steaming ground in volcanoes: Development of new technique for a volcano surveillance"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001338207908480","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Temporal variation in the resistivity structure of the first Nakadake crater, Aso volcano, Japan, during the magmatic eruptions from November 2014 to May 2015, as inferred by the ACTIVE electromagnetic monitoring system"}]},{"@id":"https://cir.nii.ac.jp/crid/1050282813184395136","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Salt shell fallout during the ash eruption at the Nakadake crater, Aso volcano, Japan: evidence of an undergrounds hydrothermal system surrounding the erupting vent"},{"@value":"Salt shell fallout during the ash eruption at the Nakadake crater, Aso volcano, Japan : evidence of an underground hydrothermal system surrounding the erupting 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