{"@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/1361699994643836800.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1080/00221680509500147"}},{"identifier":{"@type":"URI","@value":"https://www.tandfonline.com/doi/pdf/10.1080/00221680509500147"}}],"dc:title":[{"@value":"Transportational cyclic steps created by flow over an erodible bed. Part 1. Experiments"}],"description":[{"notation":[{"@value":"Froude-supercritical flow over a flat, erodible bed with copious transport of sediment in suspension appears to be fundamentally unstable. Under a broad range of conditions the flow and bed co-evolve into a series of spatially periodic, or cyclic steps. Each step has a gently sloping Froude-subcritical upstream portion followed by a steeply sloping Froude-supercritical downstream portion, ending in a hydraulic jump which reduces bed shear stress to the threshold value for bed erosion. The steps migrate upstream while preserving form, with net erosion over most of the supercritical region and net deposition over most of the subcritical region. Erosion and deposition balance over one wavelength, so that no average bed erosion results. The successive passage of steps reworks the bed, however, to a depth corresponding to the height of the steps. In the case of silt, the morphology has a strongly step-like character. With fine sand, however, the steps can devolve into the limiting case of chute-and-pool morpho..."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381699994643836801","@type":"Researcher","foaf:name":[{"@value":"Kazuo Taki"}],"jpcoar:affiliationName":[{"@value":"Department of Life and Environmental Science, Chiba Institute of Technology, Tsudanuma 2-17-1, Narashino, 275-8588, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994643836800","@type":"Researcher","foaf:name":[{"@value":"Gary Parker"}],"jpcoar:affiliationName":[{"@value":"St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN, 55414, USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00221686"},{"@type":"EISSN","@value":"18142079"}],"prism:publicationName":[{"@value":"Journal of Hydraulic Research"}],"dc:publisher":[{"@value":"Informa UK Limited"}],"prism:publicationDate":"2005-09-01","prism:volume":"43","prism:number":"5","prism:startingPage":"488","prism:endingPage":"501"},"reviewed":"false","url":[{"@id":"https://www.tandfonline.com/doi/pdf/10.1080/00221680509500147"}],"createdAt":"2010-07-30","modifiedAt":"2022-09-09","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050013397240385536","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Upper and lower plane bed definitions revised"}]},{"@id":"https://cir.nii.ac.jp/crid/1050869456407932288","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Cyclic steps on ice"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004238341097344","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Facies Distribution in Sediment-gravity-flow Deposits Constructing Sediment Waves: an Outcrop Example of Forearc Basin Fills, Neogene Aoshima Formation, Southwest Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360298341430635648","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Density stratification controls the bedform phase diagram of saline‐gravity currents versus open‐channel flows"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580230592973952","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Transportational Cyclic Steps Created by Submarine Long-Runout Turbidity Currents"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848665125505920","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Multiple knickpoints in an alluvial river generated by a single instantaneous drop in base level: experimental investigation"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205352267776","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"AN EXPERIMENTAL STUDY OF STEP TOPOGRAPHY ON THE ICE SURFACE"},{"@language":"ja","@value":"氷上のステップ地形に関する実験的研究"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001288136826624","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Supercritical-flow sedimentary structures of fluvial deposits in the Plio-Pleistocene Katata Formation, Kobiwako Group, Japan"},{"@language":"ja","@value":"河川堆積物にみられる高流砂階の堆積構造：鮮新-更新統古琵琶湖層群堅田層"},{"@language":"ja-Kana","@value":"カセン タイセキブツ ニ ミラレル コウリュウサ カイ ノ タイセキ コウゾウ : センシン-コウシントウ コ ビワコソウグンケンデンソウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679215060224","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Cyclic Steps on 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