Ara es mostren els items 12-31 de 83

    • Camera calibration for coastal monitoring using available snapshot images 

      Simarro, Gonzalo; Calvete Manrique, Daniel; Souto, Paola; Guillén Aranda, Jorge (Multidisciplinary Digital Publishing Institute (MDPI), 2020-06-06)
      Article
      Accés obert
      Joint intrinsic and extrinsic calibration from a single snapshot is a common requirement in coastal monitoring practice. This work analyzes the influence of different aspects, such as the distribution of Ground Control ...
    • Comparison of modelled nearshore transverse sandbars with field observations 

      Ribas Prats, Francesca; Calvete Manrique, Daniel; Falqués Serra, Albert (2010)
      Text en actes de congrés
      Accés obert
    • Dynamics of shoreface-connected and inactive sand ridges on a shelf, Part 2: The role of sea level rise and associated changes in shelf geometry 

      Nnafie, Abdel; de Swart, Huib E.; Calvete Manrique, Daniel; Garnier, Roland Charles (2015-08)
      Article
      Accés obert
      Many inner continental shelves are characterized by the presence of large rhythmic bedforms, such as shoreface-connected ridges and the more offshore located sand ridges, which have heights of several meters and are spaced ...
    • Effect of depth-dependent wave stirring on the final amplitude of shoreface-connected sand ridges 

      Calvete Manrique, Daniel; Swart, Huib E. de; Falqués Serra, Albert (2002-12)
      Article
      Accés restringit per política de l'editorial
      A nonlinear morphodynamic model is analysed to gain fundamental knowledge about the initial growth and long-term behaviour of observed shoreface-connected sand ridges. Themodel describes quasi-steady, depth-averaged flow ...
    • Effect of grain size sorting on the formation of shoreface-connected sand ridges 

      Walgreen, M; Deswart, H E; Calvete Manrique, Daniel (2003-03)
      Article
      Accés obert
      Field data of shoreface-connected ridges show persistent spatial variations of mean grain size over the bed forms. In the shore-normal direction, the profiles of bottom topography and mean grain size are approximately 90° ...
    • Effect of surface rollers on the formation crescentic bars 

      Calvete Manrique, Daniel; Ribas Prats, Francesca; de Swart, Huib E.; Falqués Serra, Albert (2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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)
      Comunicació de congrés
      Accés obert
      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 ...
    • Effect of wave-bedform feedbacks on the formation of, and grain sorting over shoreface-connected sand ridges 

      Vis-Star, Nicolette C.; Swart, Huib E. de; Calvete Manrique, Daniel (2009-11)
      Article
      Accés restringit per política de l'editorial
      The influence of wave–bedform feedbacks on both the initial formation of shoreface-connected sand ridges (sfcr) and on grain size sorting over these ridges on micro-tidal inner shelves is studied. Also, the effect of ...
    • Effect of wave-topography interactions on the formation of sand ridges on the shelf 

      Vis-Star, Nicolette C.; Swart, Huib E. de; Calvete Manrique, Daniel (2007-06)
      Article
      Accés obert
      The role of wave-topography interactions in the formation of sand ridges on microtidal inner shelves is investigated with an idealized morphodynamic model. The latter uses the two-dimensional shallow water equations to ...
    • Effects of sea level rise on the formation and drowning of shoreface-connected sand ridges, a model study 

      Nnafie, Abdel; Swart, Huib E. de; Calvete Manrique, Daniel; Garnier, Roland (2014-06-01)
      Article
      Accés restringit per política de l'editorial
      Shoreface-connected sand ridges occur on many storm-dominated inner shelves. These rhythmic features have an along-shelf spacing of 2-10 km, a height of 1-12 m, they evolve on timescales of centuries and they migrate several ...
    • 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
      Accés obert
      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 ...
    • Formation of shoreface-connected sand ridges: effects of rigid-lid approach, quasi-steady approach and wave-topography feedbacks 

      Nnafie, Abdel; de Swart, Huib E.; Garnier, Roland; Calvete Manrique, Daniel (2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The initial- and long-term evolution of shoreface-connected sand ridges (sfcr) is investigated with a new nonlinear model (MORFO56) that employs finite difference methods, rather than spectral methods. MORFO56 uses ...
    • Generador de Van der Graaff 

      Sanz, Clara; Marqués Truyol, Francisco; Calvete Manrique, Daniel (2018-07-04)
      Audiovisual
      Accés obert
      Este vídeo forma parte del MOOC "El lenguaje de la Ingeniería" (https://mooc.upc.edu/)
    • Generation and nonlinear evolution os shore-oblique/transverse sand bars 

      Garnier, Roland; Calvete Manrique, Daniel; Falqués Serra, Albert; Caballeria Suriñach, Miquel (2006-11)
      Article
      Accés obert
      The coupling between topography, waves and currents in the surf zone may self-organize to produce the formation of shore-transverse or shore-oblique sand bars on an otherwise alongshore uniform beach. In the absence of ...
    • Growth of large-scale bed forms due to storm-driven and tidal currents: a model approach 

      Walgreen, M.; Calvete Manrique, Daniel; Swart, Huib E. de (2002-12)
      Article
      Accés restringit per política de l'editorial
    • Instability of time-dependent wind-driven ocean gyres 

      Van der Vaart, P.C.F.; Schuttelaars, H.; Calvete Manrique, Daniel; Dijkstra, H.A. (2002-10)
      Article
      Accés obert
      The wind-driven ocean circulation at midlatitudes is susceptible to several types of instabilities. One of the simplest models of these flows is the quasigeostrophic barotropic potential vorticity equation in an idealized ...
    • Large-scale dynamics of sandy coastlines: diffusivity and instability 

      Falqués Serra, Albert; Calvete Manrique, Daniel (2005-03)
      Article
      Accés obert
      The dynamics of small-amplitude perturbations of an otherwise rectilinear coastline due to the wave-driven alongshore sediment transport is examined at large time and length scales (years and kilometers). A linear stability ...
    • Linear evolution of a shoreface nourishment 

      Leeuwen, Van S.; Dodd, Nicholas; Calvete Manrique, Daniel; Falqués Serra, Albert (2007-05)
      Article
      Accés restringit per política de l'editorial
      The morphological evolution of a shoreface nourishment is investigated by interpreting the nourishment as a linear perturbation of the natural system. The nourishment is projected onto the subset of linear eigenmodes with ...
    • Long-term morphodynamics of a coupled shelf-shoreline system forced by waves and tides, a model approach 

      Nnafie, Abdel; de Swart, Huib E.; Falqués Serra, Albert; Calvete Manrique, Daniel (American Geophysical Union (AGU), 2021-12)
      Article
      Accés obert
      Sand ridges, with length scales of several km, are prominent features of the seafloor landscape of many sandy continental shelves. Knowledge about the extent to which these ridges influence the large-scale (i.e., decadal ...
    • Mechanisms controlling crescentic bar amplitude 

      Garnier, Roland; Dodd, Nicholas; Falqués Serra, Albert; Calvete Manrique, Daniel (2010-04-15)
      Article
      Accés obert
      The formation of crescentic bars from self-organization of an initially straight shore-parallel bar for shore-normal incident waves is simulated with a two-dimensional horizontal morphodynamical model. The aim is to ...