{"@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/1360855570418199680.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/s1040-6182(02)00150-7"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S1040618202001507?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S1040618202001507?httpAccept=text/plain"}}],"dc:title":[{"@value":"Radiocarbon dating of tephra layers: recent progress in Japan"}],"description":[{"notation":[{"@value":"Abstract   A large number of tephra layers deposited over the past 40,000 years in Japan have been studied by means of newly developed techniques as well as the traditional radiocarbon    (     14   C  )    method. The samples for       14   C    dating were commonly charcoal and wood directly covered or involved in tephra-fall and pyroclastic flow deposits. Recently, the       14   C    dates measured for paleosols directly underlying a tephra layer have proved to represent the accurate eruption age of the tephra, and have successfully established the high-resolution eruptive histories of several volcanoes. In addition, oceanic and lacustrine sediments have preserved a large number of tephra layers, and accelerator mass spectrometry       14   C    measurements on terrestrial macrofossils from varved sediments have provided highly accurate ages for tephra layers. Wiggle matching of       14   C    ages from several horizons of peat sediments to INTCAL98 calibration data that was established by dendrochronology as well as by varve chronology has enabled us to obtain highly accurate ages of tephras intercalated in the peat deposits."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380855570418199681","@type":"Researcher","foaf:name":[{"@value":"Mitsuru Okuno"}]},{"@id":"https://cir.nii.ac.jp/crid/1380855570418199680","@type":"Researcher","foaf:name":[{"@value":"Toshio Nakamura"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"10406182"}],"prism:publicationName":[{"@value":"Quaternary International"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2003-01","prism:volume":"105","prism:number":"1","prism:startingPage":"49","prism:endingPage":"56"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S1040618202001507?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S1040618202001507?httpAccept=text/plain"}],"createdAt":"2003-03-25","modifiedAt":"2019-03-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002216136879872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Widespread tephras in sediments from lake Ichi-no-Megata in northern Japan: Their description, correlation and significance"}]},{"@id":"https://cir.nii.ac.jp/crid/1360002216137145344","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The role of tephras in developing a high-precision chronostratigraphy for palaeoenvironmental reconstruction and archaeology in southern Kyushu, Japan, since 30,000 cal. BP: An integration"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182122158592","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Using 14C dating of stable humin fractions to assess upbuilding pedogenesis of a buried Holocene humic soil horizon, Towada volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182422428160","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tephra identification and radiocarbon chronology of sediment from Paitan Lake at the northern part of Luzon Central Plain, Philippines"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588380143163904","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Volcanic history and magma systems of Lake Monoun Polygenetic Maar, Noun Plain, Western part of the Cameroon Volcanic Line: Constraints from stratigraphy, chronology and geochemistry"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846641067381376","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Optically stimulated luminescence dating of Late Pleistocene tephric loess intercalated with Towada tephra layers in northeastern Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206241503616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Establishment of a high-resolution tephro-stratigraphy and chronology based on geological survey"},{"@language":"ja","@value":"地質調査による高分解能なテフラ層序学・年代学の構築"},{"@language":"ja-Kana","@value":"チシツ チョウサ ニ ヨル コウブンカイノウ ナ テフラソウ ジョガク ・ ネンダイガク ノ コウチク"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206495930496","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Various methods in tephrochronology : Case studies in the Philippines, China, Korea, Japan, and the Aleutian Islands"},{"@language":"ja","@value":"テフラ編年学の多様な役割 : フィリピン，中国，韓国，日本，アリューシャン列島の研究例"},{"@language":"ja-Kana","@value":"テフラヘンネンガク ノ タヨウ ナ ヤクワリ : フィリピン,チュウゴク,カンコク,ニホン,アリューシャン レットウ ノ ケンキュウレイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282763129469824","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Correlation between Alkaline Tephra (Hm-2 Tephra) Distributed on Hakusan Volcano, Central Japan and Tephras on Ulleung Island Based on Major Element Compositions and <sup>14</sup>C Ages"},{"@language":"ja","@value":"主成分化学組成と<sup>14</sup>C年代による白山火山に産出するアルカリ岩質テフラ（Hm-2テフラ）と鬱陵島テフラとの対比"},{"@value":"主成分化学組成と¹⁴C年代による白山火山に産出するアルカリ岩質テフラ(Hm-2テフラ)と鬱陵島テフラとの対比"},{"@language":"ja-Kana","@value":"シュセイブン カガク ソセイ ト ¹ ⁴ C ネンダイ ニ ヨル ハクサン カザン ニ サンシュツ スル アルカリガンシツ テフラ(Hm-2 テフラ)ト ウツリョウトウ テフラ ト ノ タイヒ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390564238083277312","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Chronological study on widespread tephra and volcanic stratigraphy of the past 100,000 years"},{"@language":"ja","@value":"最近10万年間の広域テフラと火山層序に関する年代研究"},{"@language":"ja-Kana","@value":"サイキン 10マンネンカン ノ コウイキ テフラ ト カザンソウ ジョ ニ カンスル ネンダイ ケンキュウ"},{"@value":"Chronological study on widespread tephra and volcanic stratigraphy of the past 10,000 Years"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791869787264","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Effects of the 2016 Kumamoto earthquakes on the Aso volcanic 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