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    題名: Co-evolving delta faces under the condition of a moving sediment source
    作者: Rocío Luz Fernandez;Genevieve Cauchon-Voyer Jacques Locat;Dai, Hsi-Heng;Marcelo H. Garcia;Gary Parkerf
    貢獻者: 淡江大學水資源及環境工程學系
    關鍵詞: Fan delta;foreset slope;tailings;physical model;progradation;turbidity current
    日期: 2011
    上傳時間: 2012-06-14 09:11:35 (UTC+8)
    出版者: Abingdon: Taylor & Francis Ltd.
    摘要: 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.
    關聯: Journal of Hydraulic Research 49(1), pp.42-54
    DOI: 10.1080/00221686.2010.538577
    顯示於類別:[水資源及環境工程學系暨研究所] 期刊論文

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