DSpace DSpace UPC
 Català   Castellano   English  

E-prints UPC >
Altres >
Enviament des de DRAC >

Empreu aquest identificador per citar o enllaçar aquest ítem: http://hdl.handle.net/2117/9477

Arxiu Descripció MidaFormat
2004JC002803.pdfArticle809,91 kBAdobe PDFThumbnail
Veure/Obrir

Citació: Calvete, D. [et al.]. Morphological development of rip channel systems: normal and near-normal wave incidence. "Journal of geophysical research", Octubre 2005, vol. 110, núm. C10006, p. 1-18.
Títol: Morphological development of rip channel systems: normal and near-normal wave incidence
Autor: Calvete Manrique, Daniel Veure Producció científica UPC; Dodd, Nicholas; Falqués Serra, Albert Veure Producció científica UPC; Leeuwen, S.M.Van
Data: oct-2005
Tipus de document: Article
Resum: The process of formation of a rip channel/crescentic bar system on a straight, sandy coast is examined. A short review of earlier studies is presented. A morphodynamic stability model is then formulated. The resulting model includes a comprehensive treatment of shoaling and surf zone hydrodynamics, including wave refraction on depth and currents and waves. The sediment transport is modeled using a total load formula. This model is used to study the formation of rip currents and channels on a straight single-barred coast. It is found that this more comprehensive treatment of the dynamics reveals the basic rip cells predicted in earlier studies for normal incidence. Also as before, cell spacings (λ) scale with shore-to-bar crest distance (X b ), while growth rates decrease. The λ increases with offshore wave height (H) up to a saturation value; increasing H also increases instability. Experiments at off-normal wave incidence ( > 0) introduce obliquity into the evolving bed forms, as expected, and λ increases approximately linearly. the e-folding times also increase with . At normal incidence, λ increases weakly with wave period, but at oblique angles, λ decreases. Tests also reveal the presence of forced circulation cells nearer to the shoreline, which carve out bed forms there. The dynamics of these forced cells is illustrated and discussed along with the associated shoreline perturbation. Transverse bars are also discovered. Their dynamics are discussed. Model predictions are also compared with field observations. The relevance of the present approach to predictions of fully developed beach states is also discussed.
ISSN: 0148-0227
URI: http://hdl.handle.net/2117/9477
DOI: 10.1029/2004JC002803
Apareix a les col·leccions:DF - Dinàmica No Lineal de Fluids. Articles de revista
Departament de Física Aplicada. Articles de revista
Altres. Enviament des de DRAC
Comparteix:


Stats Mostra les estadístiques d'aquest ítem

SFX Query

Aquest ítem (excepte textos i imatges no creats per l'autor) està subjecte a una llicència de Creative Commons Llicència Creative Commons
Creative Commons

 

Valid XHTML 1.0! Programari DSpace Copyright © 2002-2004 MIT and Hewlett-Packard Comentaris
Universitat Politècnica de Catalunya. Servei de Biblioteques, Publicacions i Arxius