Direct estimation wave setup as a medium level in swash

Díaz Sánchez, Roberto and López Gutiérrez, José Santos and Lechuga, Antonio and Negro Valdecantos, Vicente and Esteban, M. Dolores (2013). Direct estimation wave setup as a medium level in swash. "Journal of Coastal Research Special Issue", v. 65 ; pp. 201-206. ISSN 1551-5036.


Title: Direct estimation wave setup as a medium level in swash
  • Díaz Sánchez, Roberto
  • López Gutiérrez, José Santos
  • Lechuga, Antonio
  • Negro Valdecantos, Vicente
  • Esteban, M. Dolores
Item Type: Article
Título de Revista/Publicación: Journal of Coastal Research Special Issue
Date: 2013
Volume: 65
Freetext Keywords: setup, runup, extreme runup, swash, beach processes.
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Ordenación del Territorio, Urbanismo y Medio Ambiente [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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The extreme runup is a key parameter for a shore risk analysis in which the accurate and quantitative estimation of the upper limit reached by waves is essential. Runup can be better approximated by splitting the setup and swash semi-amplitude contributions. In an experimental study recording setup becomes difficult due to infragravity motions within the surf zone, hence, it would be desirable to measure the setup with available methodologies and devices. In this research, an analysis is made of evaluated the convenience of direct estimation setup as the medium level in the swash zone for experimental runup analysis through a physical model. A physical mobile bed model was setup in a wave flume at the Laboratory for Maritime Experimentation of CEDEX. The wave flume is 36 metres long, 6.5 metres wide and 1.3 metres high. The physical model was designed to cover a reasonable range of parameters, three different slopes (1/50, 1/30 and 1/20), two sand grain sizes (D50 = 0.12 mm and 0.70 mm) and a range for the Iribarren number in deep water (ξ0) from 0.1 to 0.6. Best formulations were chosen for estimating a theoretical setup in the physical model application. Once theoretical setup had been obtained, a comparison was made with an estimation of the setup directly as a medium level of the oscillation in swash usually considered in extreme runup analyses. A good correlation was noted between both theoretical and time-averaging setup and a relation is proposed. Extreme runup is analysed through the sum of setup and semi-amplitude of swash. An equation is proposed that could be applied in strong foreshore slope-dependent reflective beaches.

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Item ID: 25534
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Deposited by: Memoria Investigacion
Deposited on: 22 Apr 2014 15:55
Last Modified: 22 Sep 2014 11:36
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