{"@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/1390282680170822784.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.9795/bullgsj.65.117"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"026149567"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/026149567"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I026149567"}},{"identifier":{"@type":"URI","@value":"https://dl.ndl.go.jp/pid/11114385"}},{"identifier":{"@type":"NAID","@value":"130004935501"}}],"dc:title":[{"@language":"ja","@value":"御嶽火山2014 年9 月27 日噴火で発生した火砕流"},{"@language":"en","@value":"The pyroclastic density currents generated by the September 27, 2014 phreatic eruption of Ontake Volcano, Japan."},{"@value":"概報 御嶽火山2014年9月27日噴火で発生した火砕流"},{"@language":"ja-Kana","@value":"ガイホウ ミタケ カザン 2014ネン 9ガツ 27ニチ フンカ デ ハッセイ シタ カサイリュウ"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"A phreatic eruption occurred on September 27, 2014 at Ontake Volcano, and was accompanied with pyroclastic density currents. This currents shot by the Chubu Regional Development Bureau’s camera at Takigoshi had the following characteristics. 1) Pyroclastic density currents occurred in two places (Jigokudani and western-flank) at the beginning of phreatic eruption. 2) The eruption column collapse height of the pyroclastic density currents did not exceed 300 m above the vents. 3) The front of the pyroclastic density currents traveling down the southern valleys moved at a speed of 8 to 20 m/s and reached 2 km from the vents. 4) Conspicuous secondary plume was observed rising from the current to ca. 2 km above the valleys; this suggests that the density currents possessed sufficient heat for the ash cloud to have risen due to its buoyancy. 5) However, no charring of trees was observed by helicopter observations. The Heim coefficient for the energy cone slope for the density currents is 0.45 to 0.55, when the column collapse height is 200 m."},{"@language":"ja","@value":"国土交通省多治見砂防国道事務所の滝越カメラに記録された御嶽火山2014年9月27日の水蒸気噴火による火砕流は，以下の特徴を持つ．1) 火砕流は，噴火開始時の11時52分頃に山頂南の地獄谷の上部斜面と山頂の西斜面の2箇所からほぼ同時に発生した．2) 火砕流発生時の噴煙高度は低く，300 mを大きく超えることはなかった．3）谷沿いを流れ下る火砕流先端部の速度は8 ～20 m/sで，地獄谷沿いには火口から約2 km流下した．4) 斜面を流れ下った火砕流からは顕著な二次噴煙が上昇したが，このことは火砕流がある程度の熱量を持つ流れであったことを示唆しており，灰雲が大気と混合して浮力を得たものと理解できる．5) しかし，火砕流が通過した領域では樹木の損傷や火災，炭化は認められず，火砕流自体は樹木を焦がすほどの温度ではなかったと推定される．エナジーコーンモデルによる火砕流到達域の数値計算では，噴煙柱崩壊高度を200 mとして，見かけの動摩擦係数が 0.45 ～0.55とすると到達域との一致が良い．"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410282680170822784","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000283578287"}],"foaf:name":[{"@language":"ja","@value":"山元 孝広"},{"@language":"en","@value":"Yamamoto Takahiro"}],"jpcoar:affiliationName":[{"@language":"en","@value":"AIST, Geological Survey of Japan, Institute of Earthquake and Volcano Geology"},{"@language":"ja","@value":"活断層・火山研究部門"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"13464272"},{"@type":"LISSN","@value":"13464272"},{"@type":"EISSN","@value":"2186490X"},{"@type":"NDL_BIB_ID","@value":"000000405158"},{"@type":"ISSN","@value":"13464272"},{"@type":"NCID","@value":"AA11587519"}],"prism:publicationName":[{"@language":"en","@value":"BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN"},{"@value":"地質調査研究報告"},{"@language":"en","@value":"Bull. Geol. Surv. Japan"},{"@value":"地調研報"}],"dc:publisher":[{"@language":"en","@value":"National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan"},{"@language":"ja","@value":"国立研究開発法人 産業技術総合研究所 地質調査総合センター"}],"prism:publicationDate":"2014","prism:volume":"65","prism:number":"9-10","prism:startingPage":"117","prism:endingPage":"127"},"reviewed":"false","url":[{"@id":"http://id.ndl.go.jp/bib/026149567"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I026149567"},{"@id":"https://dl.ndl.go.jp/pid/11114385"}],"availableAt":"2014","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Ontake%20Volcano","dc:title":"Ontake Volcano"},{"@id":"https://cir.nii.ac.jp/all?q=2014","dc:title":"2014"},{"@id":"https://cir.nii.ac.jp/all?q=phreatic%20eruption","dc:title":"phreatic eruption"},{"@id":"https://cir.nii.ac.jp/all?q=pyroclastic%20density%20current","dc:title":"pyroclastic density current"},{"@id":"https://cir.nii.ac.jp/all?q=Takigoshi","dc:title":"Takigoshi"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050564288880649344","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Reconstruction of the 2014 eruption sequence of Ontake Volcano from recorded images and interviews"}]},{"@id":"https://cir.nii.ac.jp/crid/1050845760762909056","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Preparatory process preceding the 2014 eruption of Mount Ontake volcano, Japan: Insights from precise leveling measurements 5.Volcanology"},{"@value":"Preparatory process preceding the 2014 eruption of Mount Ontake volcano, Japan : insights from precise leveling measurements"}]},{"@id":"https://cir.nii.ac.jp/crid/1050845763137851776","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Lahar characteristics as a function of triggering mechanism at a seasonally snow-clad volcano: contrasting lahars following the 2014 phreatic eruption of Ontake Volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1050845763857360128","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Reconstruction of a phreatic eruption on 27 September 2014 at Ontake volcano, central Japan, based on proximal pyroclastic density current and fallout deposits"}]},{"@id":"https://cir.nii.ac.jp/crid/1360572092725895424","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Shallow Magmatic Hydrothermal Eruption in April 2018 on Ebinokogen Ioyama Volcano in Kirishima Volcano Group, Kyushu, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094272068864","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Glowing Avalanches: New Research on Volcanic Density Currents"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418518474719744","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Pyroclastic density current from the 1888 phreatic eruption of Bandai volcano, NE Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418518762724224","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Hydrothermal eruptions in the Waiotapu geothermal system, New Zealand; their origin, associated breccias, and relation to precious metal mineralization"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418518889286016","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Heat source of the 2014 phreatic eruption of Mount Ontake, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825893981261440","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Corrigendum"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825894415282688","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The dynamics and thermodynamics of volcanic clouds: Theory and observations from the april 15 and april 21, 1990 eruptions of redoubt volcano, Alaska"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388844146497152","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"II. The Stanze di Venere at Baia"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388845485909888","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Pyroclastic density currents"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205196656512","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"有珠火山2000年噴火でのマグマ水蒸気爆発と火砕流到達域予測"},{"@language":"en","@value":"The 2000 eruption of Usu Volcano, Japan: characteristics of phreatomagmatic explosions and hazard evaluation for pyroclastic density currents."},{"@value":"有珠火山2000年噴火でのマグマ水蒸気爆発と火砕流到達城予測"},{"@language":"ja-Kana","@value":"ウス カザン 2000ネン フンカ デ ノ マグマ スイジョウキ バクハツ ト カサイリュウ トウタツジョウ ヨソク"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001288041883008","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Geological study of phreatic eruptions"},{"@language":"ja","@value":"水蒸気噴火の地質学的研究"},{"@language":"ja-Kana","@value":"スイジョウキ フンカ ノ チシツガクテキ ケンキュウ"}]},{"@id":"https://cir.nii.ac.jp/crid/2050307417169269120","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"2014 Mount Ontake eruption : characteristics of the phreatic eruption as inferred from aerial observations"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317020014080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Suspended sediment transport diversity in river catchments following the 2014 phreatic eruption at Ontake Volcano, Japan"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:2000103453"},{"@type":"NDL_SEARCH","@value":"oai:ndlsearch.ndl.go.jp:R000000004-I026149567"},{"@type":"CROSSREF","@value":"10.9795/bullgsj.65.117"},{"@type":"CIA","@value":"130004935501"},{"@type":"CROSSREF","@value":"10.1186/s40623-016-0452-y_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.1186/s40623-018-0873-x_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.1186/s40623-016-0386-4_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.1186/s40623-016-0458-5_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.1186/s40623-019-0994-x_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.3390/geosciences10050183_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.1007/s00445-020-1358-x_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.1186/s40623-016-0449-6_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"},{"@type":"CROSSREF","@value":"10.5575/geosoc.2017.0071_references_DOI_UI8HQi0PYmFKjQveJrRV6uXE46F"}]}