{"@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/1360567190154748928.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.5194/os-14-575-2018"}},{"identifier":{"@type":"URI","@value":"https://os.copernicus.org/articles/14/575/2018/os-14-575-2018.pdf"}},{"identifier":{"@type":"DOI","@value":"10.5194/os-2018-37"}},{"identifier":{"@type":"URI","@value":"https://www.ocean-sci-discuss.net/os-2018-37/os-2018-37.pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Hadal water biogeochemistry over the Izu–Ogasawara Trench observed with a full-depth CTD-CMS"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Abstract. Full-depth profiles of hydrographic and geochemical\nproperties at the Izu–Ogasawara Trench were observed for the first time\nusing a CTD-CMS (conductivity–temperature–depth profiler with\ncarousel multiple sampling) system. Additionally, comparative samplings were\ndone at the northern Mariana Trench using the same methods. A well-mixed\nhydrographic structure below 7000 m was observed within the Izu–Ogasawara\nTrench. Seawater samples collected from this well-mixed hadal layer\nexhibited constant concentrations of nitrate, phosphate, silicate, and\nnitrous oxide as well as constant nitrogen and oxygen isotopic compositions\nof nitrate and nitrous oxide. These results agree well with previous\nobservations of the Izu–Ogasawara hadal waters and deep-sea\nwater surrounding the Izu–Ogasawara Trench. In turn, methane concentrations and\nisotopic compositions indicated spatial heterogeneity within the well-mixed\nhadal water mass, strongly suggesting a local methane source within the\ntrench, in addition to the background methane originating from the general\ndeep-sea bottom water. Sedimentary compound releases, associated with\nsediment re-suspensions, are considered to be the most likely mechanism for\ngenerating this significant CH4 anomaly.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380567190154748928","@type":"Researcher","foaf:name":[{"@value":"Shinsuke Kawagucci"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154749056","@type":"Researcher","foaf:name":[{"@value":"Akiko Makabe"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154748672","@type":"Researcher","foaf:name":[{"@value":"Taketoshi Kodama"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154748673","@type":"Researcher","foaf:name":[{"@value":"Yohei Matsui"}]},{"@id":"https://cir.nii.ac.jp/crid/1420845751139692928","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"40435839"},{"@type":"NRID","@value":"1000040435839"},{"@type":"NRID","@value":"9000370282035"},{"@type":"NRID","@value":"9000016889738"},{"@type":"NRID","@value":"9000370280853"},{"@type":"NRID","@value":"9000258408728"},{"@type":"NRID","@value":"9000258406754"},{"@type":"NRID","@value":"9000009313475"},{"@type":"NRID","@value":"9000345435804"},{"@type":"NRID","@value":"9000363490294"},{"@type":"NRID","@value":"9000381452525"},{"@type":"NRID","@value":"9000347226962"},{"@type":"NRID","@value":"9000369734681"},{"@type":"NRID","@value":"9000001791306"},{"@type":"NRID","@value":"9000016708209"},{"@type":"NRID","@value":"9000324654980"},{"@type":"NRID","@value":"9000019198752"},{"@type":"NRID","@value":"9000283907540"},{"@type":"NRID","@value":"9000398987984"},{"@type":"NRID","@value":"9000258406741"},{"@type":"NRID","@value":"9000356532880"},{"@type":"NRID","@value":"9000347226137"},{"@type":"NRID","@value":"9000402247712"},{"@type":"NRID","@value":"9000370280906"},{"@type":"NRID","@value":"9000398988225"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/yoshikawac"}],"foaf:name":[{"@value":"Chisato Yoshikawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154749057","@type":"Researcher","foaf:name":[{"@value":"Etsuro Ono"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276184004224","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"30415989"},{"@type":"NRID","@value":"1000030415989"},{"@type":"NRID","@value":"9000022039624"},{"@type":"NRID","@value":"9000333918117"},{"@type":"NRID","@value":"9000002003114"},{"@type":"NRID","@value":"9000381452530"},{"@type":"NRID","@value":"9000369734669"},{"@type":"NRID","@value":"9000414810726"},{"@type":"NRID","@value":"9000342446171"},{"@type":"NRID","@value":"9000398608235"},{"@type":"NRID","@value":"9000001423533"},{"@type":"NRID","@value":"9000398611022"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/mwakita"}],"foaf:name":[{"@value":"Masahide Wakita"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154749058","@type":"Researcher","foaf:name":[{"@value":"Takuro Nunoura"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154748801","@type":"Researcher","foaf:name":[{"@value":"Hiroshi Uchida"}]},{"@id":"https://cir.nii.ac.jp/crid/1380567190154748929","@type":"Researcher","foaf:name":[{"@value":"Taichi Yokokawa"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"18120792"}],"prism:publicationName":[{"@value":"Ocean Science"}],"dc:publisher":[{"@value":"Copernicus GmbH"}],"prism:publicationDate":"2018-07-13","prism:volume":"14","prism:number":"4","prism:startingPage":"575","prism:endingPage":"588"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://os.copernicus.org/articles/14/575/2018/os-14-575-2018.pdf"},{"@id":"https://www.ocean-sci-discuss.net/os-2018-37/os-2018-37.pdf"}],"createdAt":"2018-07-13","modifiedAt":"2025-02-01","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=G","dc:title":"G"},{"@id":"https://cir.nii.ac.jp/all?q=Environmental%20sciences","dc:title":"Environmental sciences"},{"@id":"https://cir.nii.ac.jp/all?q=Geography.%20Anthropology.%20Recreation","dc:title":"Geography. 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Recreation"},{"@id":"https://cir.nii.ac.jp/all?q=GE1-350","dc:title":"GE1-350"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040000781833392000","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"15H05471"},{"@type":"JGN","@value":"JP15H05471"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H05471/"}],"notation":[{"@language":"ja","@value":"海洋生態系・同位体分子種モデルで解明する海洋N2O排出プロセスの気候変動への応答"},{"@language":"en","@value":"Nitrogen isotopomer modeling for prediction of N2O emission form the ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282256803392512","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"15H02835"},{"@type":"JGN","@value":"JP15H02835"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H02835/"}],"notation":[{"@language":"ja","@value":"北太平洋西部亜寒帯循環域の特異な海洋酸性化と生物への影響評価に関する研究"},{"@language":"en","@value":"Ocean acidification in the subarctic western North Pacific Ocean and its impact on marine 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