{"@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/1361137044852163072.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/jqs.1361"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1361"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1361"}}],"dc:title":[{"@value":"Enhanced marine productivity in the Kuroshio region off Shikoku during the last glacial period inferred from the accumulation and carbon isotopes of sedimentary organic matter"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title>\n                  <jats:p>\n                    We obtained marine primary production records from cores MD01‐2422 and KH06‐3‐PC8 in the modern Kuroshio flow region in the western North Pacific for the last 35 ka. The organic carbon content of marine sediments is commonly used as a proxy for export production from the surface ocean. Most sedimentary organic carbon was derived from marine organisms, because carbon isotopes of organic matter (\n                    <jats:italic>δ</jats:italic>\n                    <jats:sup>13</jats:sup>\n                    C\n                    <jats:sub>org</jats:sub>\n                    ) in sediments were approximately −21‰, which is close to the typical marine\n                    <jats:italic>δ</jats:italic>\n                    <jats:sup>13</jats:sup>\n                    C\n                    <jats:sub>org</jats:sub>\n                    value. The quantities of marine and terrestrial organic matter were reconstructed from the mass balance of\n                    <jats:italic>δ</jats:italic>\n                    <jats:sup>13</jats:sup>\n                    C\n                    <jats:sub>org</jats:sub>\n                    in bulk total organic carbon. The accumulation of marine organic carbon, and presumably marine production, was enhanced during the latter half of the last glacial period in the subtropical gyre in the western North Pacific. Terrestrial organic matter varied synchronously with marine organic carbon changes, suggesting that both increased in late Marine Isotope Stage (MIS) 2. We conclude that in addition to aeolian dust supplied by the East Asia monsoon, the lateral transport of nutrients from the East China Sea to the subtropical gyre as a result of a sea‐level rise at the last deglaciation played an essential role in enhancing palaeoproductivity during the last glacial period. Copyright © 2009 John Wiley & Sons, Ltd.\n                  </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137044852163072","@type":"Researcher","foaf:name":[{"@value":"Minoru Ikehara"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044852162945","@type":"Researcher","foaf:name":[{"@value":"Daisaku Akita"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044852162944","@type":"Researcher","foaf:name":[{"@value":"Ayuri Matsuda"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"02678179"},{"@type":"EISSN","@value":"10991417"}],"prism:publicationName":[{"@value":"Journal of Quaternary Science"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"2009-11-26","prism:volume":"24","prism:number":"8","prism:startingPage":"848","prism:endingPage":"855"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1361"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1361"}],"createdAt":"2009-11-27","modifiedAt":"2025-11-25","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390282680197309824","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"半遠洋性泥の有機炭素沈積流量変化，最終氷期末期〜後氷期，南海トラフ沿い前弧海盆の例"},{"@language":"en","@value":"Accumulation rate of organic carbon in hemipelagic mud, examples from the forearc basins along the Nankai Trough Japan during the last glacial maximum to deglaciation"},{"@language":"ja-Kana","@value":"ハンエンヨウセイ デイ ノ ユウキ タンソチンセキ リュウリョウ ヘンカ,サイシュウヒョウ キマツキ~コウヒョウキ,ナンカイ トラフ ゾイ ゼン コカイボン ノ レイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390578857491959168","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Reconstruction of Paleoenvironment and Identification of Historical Tsunami Deposits by Geochemical Analyses in Iwanuma City, Miyagi Prefecture, Japan"},{"@language":"ja","@value":"宮城県岩沼市における地球化学分析を用いた古環境復元と歴史津波堆積物の認定"},{"@language":"ja-Kana","@value":"ミヤギケン イワヌマシ ニ オケル チキュウ カガク ブンセキ オ モチイタ コ カンキョウ フクゲン ト レキシ ツナミ タイセキブツ ノ ニンテイ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791996728320","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-resolution Quaternary record of marine organic carbon content in the hemipelagic sediments of the Japan Sea from bromine counts measured by XRF core scanner"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/jqs.1361"},{"@type":"OPENAIRE","@value":"doi_dedup___::5f2b69120c9f666d2e152941a3bce323"},{"@type":"CROSSREF","@value":"10.1186/s40645-018-0244-z_references_DOI_VTyqRoVbA0hxdRrCqbFasYpRqK1"},{"@type":"CROSSREF","@value":"10.5026/jgeography.132.275_references_DOI_VTyqRoVbA0hxdRrCqbFasYpRqK1"},{"@type":"CROSSREF","@value":"10.4096/jssj.73.121_references_DOI_VTyqRoVbA0hxdRrCqbFasYpRqK1"}]}