Now showing items 1-20 of 73

    • A mechanism for sandbar straightening by oblique wave incidence 

      Garnier, Roland; Falqués Serra, Albert; Calvete Manrique, Daniel; Thiebot, Jerome; Ribas Prats, Francesca (2013-06-06)
      Article
      Open Access
      Breaker bars in the surf zone of sandy beaches generally evolve between straight bars parallel to the shore and meandering crescentic bars associated with intense (dangerous) currents flowing seaward through rip channels. ...
    • A new morphodynamic instability associated with cross-shore transport in the nearshore 

      Falqués Serra, Albert; Ribas Prats, Francesca; Mujal Colilles, Anna; Puig i Polo, Càrol (2021-07-16)
      Article
      Restricted access - publisher's policy
      The existing theory for shore-transverse rhythmic sand bars relies on morphodynamic instabilities involving the wave-driven longshore current and rip currents. Intriguingly, transverse finger bars are common on coasts with ...
    • Assessing the suitability of video imaging for studying the Dynamics of nearshore sandbars in tideless beaches 

      Ribas Prats, Francesca; Ojeda Casillas, Elena; Price, Timothy D.; Guillén Aranda, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2010)
      Article
      Restricted access - publisher's policy
      Nearshore sandbars, an important natural defense mechanism of the beaches, can be monitored using shore-based video systems. Before studying bar dynamics with video images, we must establish the relationship between the ...
    • Automatic shoreline detection from video images by combining information from different methods 

      Ribas Prats, Francesca; Simarro, Gonzalo; Arriaga García, Jaime; Luque Lozano, Pau (Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-02)
      Article
      Open Access
      Properly registering the time evolution of the shoreline—the coastal land-water interface—is a crucial issue in coastal management, among other disciplines. Video stations have shown to be powerful low-cost tools for ...
    • Avaluació del professor/investigador. Període 01/09/2007 al 31/12/2008 

      Ribas Prats, Francesca (Universitat Politècnica de Catalunya, 2007-02)
      Working paper
      Open Access
    • Cambios morfológicos de barras sumergidas en playas artificiales 

      Ojeda, Elena; Guillén, Jorge; Ribas Prats, Francesca (2007-04)
      Conference report
      Open Access
      Se analizan los cambios morfológicos que experimentan las barras sumergidas de dos playas artificiales de la ciudad de Barcelona durante un período de tres años. La posición media de las barras indica que presentan ...
    • Cambios morfológicos en barras sumergidas de playas artificiales 

      Ojeda, Elena; Guillén, Jorge; Ribas Prats, Francesca (Edicions UIB (Universitat de les Illes Balears), 2008-10)
      Article
      Open Access
      Se analizan los cambios morfológicos que experimentan las barras sumergidas de dos playas artificiales de la ciudad de Barcelona durante un período de tres años. Los desplazamientos de las barras alcanzaron más de 50 m, ...
    • Characteristics and dynamics of crescentic bar events at Castelldefels beach 

      Swart, Rinse Leendert de; Ribas Prats, Francesca; Simarro, Gonzalo; Guillén Aranda, Jorge (Consejo Superior de Investigaciones Científicas (CSIC), 2019)
      Conference report
      Open Access
      Crescentic sand bars have been studied intensively in the last decades, resulting in good knowledge of some of their characteristics, but the processes behind their formation and destruction are not yet clear. This study ...
    • Characteristics and dynamics of crescentic bar events in an open, tideless beach 

      Swart, Rinse Leendert de; Ribas Prats, Francesca; Ruessink, Gerben; Simarro, Gonzalo; Guillén Aranda, Jorge (2017)
      Conference report
      Open Access
      Crescentic bar events at Castelldefels beach (NW Mediterranean) have been characterised using a 4.25 years dataset (October 2010-December 2014) of time-exposure video images. Crescentic bars are observed during 41% of ...
    • Characteristics and dynamics of surfzone transverse finger bars 

      Ribas Prats, Francesca; Kroon, A. (American Geophysical Union (AGU), 2007-09)
      Article
      Open Access
      Patches of transverse finger bars have been identified in the surf zone of Noordwijk beach (Netherlands). They consisted of three to nine elongated accumulations of sand attached to the low-tide shoreline. The bars ...
    • Comparison of modelled nearshore transverse sandbars with field observations 

      Ribas Prats, Francesca; Calvete Manrique, Daniel; Falqués Serra, Albert (2010)
      Conference report
      Open Access
    • Dynamics of single-barred embayed beaches 

      Ojeda Casillas, Elena; Guillén Aranda, Jorge; Ribas Prats, Francesca (2011-02-15)
      Article
      Open Access
      The dynamics of single submerged sandbars of two artificial embayed beaches (La Barceloneta and Bogatell, Barcelona, NW Mediterranean) has been studied with a video-recorded data set of 4.3 years. The alongshore-averaged ...
    • Dynamics of the rhythmic morphology on the low-energy Trabucador beach (Ebro delta) 

      Mujal Colilles, Anna; Grifoll Colls, Manel; Ribas Prats, Francesca; Falqués Serra, Albert (Consejo Superior de Investigaciones Científicas (CSIC), 2019)
      Conference report
      Open Access
      Observations of rhythmic morphology along the Trabucador beach are contrasted with two numerical models to unravel the mechanisms of their formation. The Trabucador is a long narrow barrier at the SW side of the Ebro ...
    • Effect of large angles of wave incidence on beach nourishments 

      Van den Berg, Niels; Falqués Serra, Albert; Ribas Prats, Francesca (2009)
      Conference report
      Restricted access - publisher's policy
      The aim of this study is to investigate the effect of instability on beach nourishments. The main objective is finding out how the nourishment of a particular beach must be designed to i) optimize its useful lifetime and ...
    • Effect of surface rollers on the formation crescentic bars 

      Calvete Manrique, Daniel; Ribas Prats, Francesca; de Swart, Huib E.; Falqués Serra, Albert (2011)
      Conference lecture
      Restricted access - publisher's policy
      The effect of surface rollers on the formation of crescentic bars/rip channel systems is examined with a morphodynamic model. A linear stability analysis is applied to find the fastest growing bottom patterns that develop ...
    • Effect of surface rollers on the formation of crescentic bars: large angles of incidence 

      Calvete Manrique, Daniel; Ribas Prats, Francesca; Swart, Huib E. de; Falqués Serra, Albert (2012)
      Conference lecture
      Open Access
      The formation of crescentic bars is examined using a morphodynamic model based in linear stability analysis. The effect of surface rollers for off-normal wave conditions is examined. The effect of the rollers is to increase ...
    • Emerging crescentic patterns in modelled double sandbar systems under normally incident waves 

      Coco, Giovanni; Calvete Manrique, Daniel; Ribas Prats, Francesca; de Swart, Huib E.; Falqués Serra, Albert (European Geosciences Union (EGU), 2020-05-06)
      Article
      Open Access
      Double sandbar systems often characterize the surf zone of wave-dominated beaches and display a variety of poorly explained spatial configurations. Here, we explore the morphodynamic stability of double-barred beaches using ...
    • Examen final 

      Ribas Prats, Francesca; Massignan, Pietro Alberto; Kakeh Burgada, Nabil (Universitat Politècnica de Catalunya, 2018-06-08)
      Exam
      Restricted access to the UPC academic community
    • Examen final 

      Ribas Prats, Francesca; Massignan, Pietro Alberto; Ayats López, Roger (Universitat Politècnica de Catalunya, 2019-01-11)
      Exam
      Restricted access to the UPC academic community
    • Examen MQ 

      Ribas Prats, Francesca; Massignan, Pietro Alberto (Universitat Politècnica de Catalunya, 2018-10-30)
      Exam
      Restricted access to the UPC academic community