{"@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/1362262943782032128.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1073/pnas.1413058111"}},{"identifier":{"@type":"URI","@value":"https://pnas.org/doi/pdf/10.1073/pnas.1413058111"}}],"dc:title":[{"@value":"Direct numerical simulations of aeolian sand ripples"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Significance</jats:title>\n          <jats:p>Wind ripples decorate the flanks of dunes in amazingly regular patterns, on both Earth and Mars. Their emergence at a wavelength much larger than the grain size is currently unexplained. We report direct numerical simulations of grains interacting with a wind flow that are, for the first time to our knowledge, able to reproduce the spontaneous growth of ripples with an initial wavelength and a propagation velocity linearly increasing with the wind speed. We propose a new formation mechanism, involving resonant grain trajectories tuned with the ripple wavelength. We also show that the product of the ripple wavelength and velocity is a proxy for the sediment flux, opening a promising perspective from which to perform remote measurements of sand mass transfers, on Mars in particular.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380576120431117057","@type":"Researcher","foaf:name":[{"@value":"Orencio Durán"}],"jpcoar:affiliationName":[{"@value":"Laboratoire de Physique et Mécanique des Milieux Hetérogènes, UMR 7636, CNRS, Ecole Supérieure de Physique et de Chimie Industrielles, Université Paris Diderot, Université Pierre et Marie Curie, 75005 Paris, France; and"},{"@value":"MARUM–Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany"}]},{"@id":"https://cir.nii.ac.jp/crid/1380576120431117058","@type":"Researcher","foaf:name":[{"@value":"Philippe Claudin"}],"jpcoar:affiliationName":[{"@value":"Laboratoire de Physique et Mécanique des Milieux Hetérogènes, UMR 7636, CNRS, Ecole Supérieure de Physique et de Chimie Industrielles, Université Paris Diderot, Université Pierre et Marie Curie, 75005 Paris, France; and"}]},{"@id":"https://cir.nii.ac.jp/crid/1380576120431117056","@type":"Researcher","foaf:name":[{"@value":"Bruno Andreotti"}],"jpcoar:affiliationName":[{"@value":"Laboratoire de Physique et Mécanique des Milieux Hetérogènes, UMR 7636, CNRS, Ecole Supérieure de Physique et de Chimie Industrielles, Université Paris Diderot, Université Pierre et Marie Curie, 75005 Paris, France; and"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00278424"},{"@type":"EISSN","@value":"10916490"}],"prism:publicationName":[{"@value":"Proceedings of the National Academy of Sciences"}],"dc:publisher":[{"@value":"Proceedings of the National Academy of Sciences"}],"prism:publicationDate":"2014-10-20","prism:volume":"111","prism:number":"44","prism:startingPage":"15665","prism:endingPage":"15668"},"reviewed":"false","url":[{"@id":"https://pnas.org/doi/pdf/10.1073/pnas.1413058111"}],"createdAt":"2014-10-21","modifiedAt":"2022-04-13","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360285707321379200","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Development of a large-eddy simulation coupled with Lagrangian snow transport model"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791866144896","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Simple stochastic cellular automaton model for starved beds and implications about formation of sand topographic features in terms of sand flux"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1073/pnas.1413058111"},{"@type":"CROSSREF","@value":"10.1186/s40645-016-0102-9_references_DOI_FlO1h5wy84LRe5J0eG6nO6CZ4Is"},{"@type":"CROSSREF","@value":"10.1016/j.jweia.2018.09.027_references_DOI_FlO1h5wy84LRe5J0eG6nO6CZ4Is"}]}