{"@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/1361418520031824512.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/0012-821x(81)90152-7"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:0012821X81901527?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:0012821X81901527?httpAccept=text/plain"}}],"dc:title":[{"@value":"Rare gas isotopic compositions in natural gases of Japan"}],"description":[{"notation":[{"@value":"Isotopic and elemental compositions of rare gases in various types of gas samples collected in the Japanese Islands were investigated. Excess3He was found in most samples. Many samples showed a regionally uniform high3He/4He ratio of about 7 times the atmospheric ratio. The He concentrations varied from 0.6 to 1800 ppm, and they were low in CO2-rich gases and high in N2-rich gases. Ne isotopic deviations from the atmospheric Ne were detected in most volcanic gases. The deviations and the elemental abundance patterns in volcanic gases can be explained by a mixing between two components, one is mass fractionated rare gases and the other is isotopically atmospheric and is enriched in heavy rare gas elements. Ar was a mixture of mass fractionated Ar, atmospheric Ar and radiogenic Ar, and the contribution of radiogenic40Ar was small in all samples. Except for He, elemental abundance patterns were progressively enriched in the heavier rare gases relative to the atmosphere. Several samples were highly enriched in Kr and Xe relative to the abundance pattern of dissolution equilibrium of atmospheric rare gases in water. The component which is highly enriched in heavy rare gases may be released from sedimentary materials in the crust."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381418520031824512","@type":"Researcher","foaf:name":[{"@value":"Keisuke Nagao"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520031824513","@type":"Researcher","foaf:name":[{"@value":"Nobuo Takaoka"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520031824514","@type":"Researcher","foaf:name":[{"@value":"Osamu Matsubayashi"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0012821X"}],"prism:publicationName":[{"@value":"Earth and Planetary Science Letters"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"1981-04","prism:volume":"53","prism:number":"2","prism:startingPage":"175","prism:endingPage":"188"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:0012821X81901527?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:0012821X81901527?httpAccept=text/plain"}],"createdAt":"2002-11-11","modifiedAt":"2021-05-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282677536695680","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Sulphur geodynamic cycle"},{"@value":"Sulfur geodynamic cycle"}]},{"@id":"https://cir.nii.ac.jp/crid/1050564288373847296","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Imaging the hydrothermal system beneath the Jigokudani valley, Tateyama volcano, Japan: Implications for structures controlling repeated phreatic eruptions from an audio-frequency magnetotelluric survey"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004229802607104","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Triggering of earthquake swarms following the 2011 Tohoku megathrust earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232051056128","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Effect of the volcanic front migration on helium, nitrogen, argon, and carbon geochemistry of hydrothermal/magmatic fluids from Hokkaido volcanoes, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283690913949056","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Widespread distribution of ascending fluids transporting mantle helium in the fore-arc region and their upwelling processes: Noble gas and major element composition of deep groundwater in the Kii Peninsula, southwest Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285707150643200","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Geochemical mapping of slab-derived fluid and source mantle along Japan arcs"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565164303763840","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Experimental constraints on the serpentinization rate of fore‐arc peridotites: Implications for the upwelling condition of the slab‐derived fluid"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565169056347648","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Precise Measurement of Helium Isotopes in Terrestrial Gases"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567181201865216","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Variations in thermal state revealed by the geochemistry of fumarolic gases and hot-spring waters of the Tateyama volcanic hydrothermal system, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360568468126288768","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Secular Variations of Helium and Nitrogen Isotopes Related to the 2015 Volcanic Unrest of Mt. 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