Co-evolving delta faces under the condition of a moving sediment source / Rocio Luz Fernandez in Journal of hydraulic research, Vol. 49 N° 1 (Janvier/Fevrier 2011)  

Public ISBD [article]  inJournal of hydraulic research > Vol. 49 N° 1 (Janvier/Fevrier 2011) . - pp. 42-54 Titre : Co-evolving delta faces under the condition of a moving sediment source Type de document : texte imprimé Auteurs : Rocio Luz Fernandez, Auteur ; Genevieve Cauchon-Voyer, Auteur ; Jacques Locat, Auteur Année de publication : 2011 Article en page(s) : pp. 42-54 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Fan delta Foreset slope Tailings Physical model Progradation Turbidity current Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : A fan delta developed under the constraints of a moving point of flow-sediment supply is described. The sediment mixtures used in the experiments were chosen to approximate field conditions, with the coarser fractions depositing to form the topset (subaerial delta surface) and foreset, and the finer fractions forming a turbidity current that plunges near the shoreline, overrides the foreset, and continues into deeper water to emplace a bottomset. The migration rate of the feed point was adjusted so that the base of the lateral foreset along one side just touched the flume wall, so leaving open water on that side. The experiments provide insight into the sedimentation processes associated with these three co-evolving structures of the delta, i.e. its topset, foreset, and bottomset. The results indicate that the lateral delta extent can be controlled via the downstream migration of its sediment source. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.informaworld.com/smpp/content~db=all~content=a933342443~frm=titlelink [article] Co-evolving delta faces under the condition of a moving sediment source [texte imprimé] / Rocio Luz Fernandez, Auteur ; Genevieve Cauchon-Voyer, Auteur ; Jacques Locat, Auteur . - 2011 . - pp. 42-54. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 49 N° 1 (Janvier/Fevrier 2011) . - pp. 42-54 Mots-clés : Fan delta Foreset slope Tailings Physical model Progradation Turbidity current Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : A fan delta developed under the constraints of a moving point of flow-sediment supply is described. The sediment mixtures used in the experiments were chosen to approximate field conditions, with the coarser fractions depositing to form the topset (subaerial delta surface) and foreset, and the finer fractions forming a turbidity current that plunges near the shoreline, overrides the foreset, and continues into deeper water to emplace a bottomset. The migration rate of the feed point was adjusted so that the base of the lateral foreset along one side just touched the flume wall, so leaving open water on that side. The experiments provide insight into the sedimentation processes associated with these three co-evolving structures of the delta, i.e. its topset, foreset, and bottomset. The results indicate that the lateral delta extent can be controlled via the downstream migration of its sediment source. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.informaworld.com/smpp/content~db=all~content=a933342443~frm=titlelink

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