Publicado

2018-01-01

Patrones en las excursiones de swash en dos playas contrastantes: Playas Hollywood y Costa Verde, Colombia

Swash excursion patterns at two contrasting beaches: Hollywood and Costa Verde beach, Colombia

DOI:

https://doi.org/10.15446/dyna.v85n204.63363

Palabras clave:

zona de swash, velocidades, concentraciones, uprush, backwash, ondas infragravitatorias (IG), ondas Sea-Swell (SS) (es)
swash zone, velocities, concentrations, uprush, backwash, infragravity waves (IG), Sea-Swell waves (SS) (en)

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La zona de swash es la parte de la playa que esta consecutivamente seca y húmeda debido al ascenso y descenso del mar producto del oleaje y la marea. Esta zona es de gran importancia en los sistemas de playas, ya que allí se desarrollan los procesos de erosión/acreción de la línea de costa y las inundaciones; por lo tanto, el entendimiento de las dinámicas que ocurren en esta zona son vitales para predecir y mitigar los posibles impactos en playas, dunas y estructuras costeras bajo diferentes escenarios climáticos.
Mediciones de variables in situ como presiones, velocidades y concentraciones de sedimento en la zona de swash, fueron llevadas a cabo en dos playas en el Caribe Colombiano: Playa Costa Verde, (Ciénaga) y Playa Hollywood, (Cartagena). Los datos fueron usados para comparar los patrones de velocidades y concentraciones de sedimentos en la zona de swash debido a la influencia de la pendiente de la playa en esta zona y la influencia de las diferentes frecuencias de las ondas (infragravitatorias (IG) o Sea-Swell (SS)). Adicionalmente, se propone una aproximación para ligar pequeñas escalas espacio-temporales (ciclos de swash) con procesos espacio-temporales mayores (erosión-acreción).
The swash zone is the part of the beaches that are consecutively dry and wet due to the rise and fall of the sea by waves and tides. This zone is particularly important in beach systems, as here erosion and accretion of the coastline and coastal inundation occur; therefore, understanding of the dynamics in this zone allows the prediction and mitigation of potential impacts on beaches, dunes and coastal structures under different climate scenarios.
In situ measurements of variables such as pressure, velocity and sediment concentrations on the swash were carried out for the first time at two beaches in the Colombian Caribbean: Costa Verde beach, (Ciénaga) and Hollywood beach (Cartagena). The data were used to compare the velocity and sediments transport patterns in the swash zone due to the beach slope on this zone and to the influence of different wave frequencies (IG or SS). In addition, a first approximation to link small spatio-temporal scales (swash cycles) with larger spatio-temporal processes (erosion-accretion) was carried out.

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Puleo, J.A. and Torres-Freyermuth, A., The second international workshop on swash zone processes, Coast. Eng., [online]. 2015. Available at: https://sites.udel.edu/jpuleo/swash-zone-and-nearshore-sediment-transport/

Masselink, G. and Russell, P., Flow velocities, sediment transport and morphological change in the swash zone of two contrasting beaches, Mar. Geol., 227(3–4), pp. 227-240, 2006. DOI: 10.1016/j.margeo.2005.11.005

Chardón-Maldonado, P., Pintado-Patiño, J.C. and Puleo, J.A., Advances in swash-zone research: Small-scale hydrodynamic and sediment transport processes, Coast. Eng., January-Dec., 2015.

Van Rooijen, A.A., Modelling sediment transport in the swash zone, 2011.

Masselink, G. and Hughes, M., Field investigation of sediment transport in the swash zone, Cont. Shelf Res., 18, pp. 1179-1199, 1998. DOI: 10.1016/S0278-4343(98)00027-2

Butt, T. and Russell, P., Suspended sediment transport mechanisms in high-energy swash, Mar. Geol., 161, pp. 361-375, 1999. DOI: 10.1016/S0025-3227(99)00043-2

Elfrink, B. and Baldock, T., Hydrodynamics and sediment transport in the swash zone: a review and perspectives, Coast. Eng., 45(3–4), pp. 149-167, 2002. DOI: 10.1016/S0378-3839(02)00032-7

Aagaard, T. and Greenwood, B., Suspended sediment transport and the role of infragravity waves in a barred surf zone, Mar. Geol., 118(1–2), pp. 23-48, 1994. DOI: 10.1016/0025-3227(94)90111-2

Stockdon, H.F., Holman, R.A., Howd, P.A. and Sallenger, A.H., Empirical parameterization of setup, swash, and runup, Coast. Eng., 53(7), pp. 573-588, 2006. DOI: 10.1016/j.coastaleng.2005.12.005

Guedes, R.M.C., Bryan, K.R., Coco, G. and Holman, R.A., The effects of tides on swash statistics on an intermediate beach, J.

Geophys. Res., 116(C4), pp. C04008, 2011. DOI: 10.1029/2010JC006660

Hughes, M.G., Aagaard, T., Baldock, T.E. and Power, H.E., Spectral signatures for swash on reflective, intermediate and dissipative beaches, Mar. Geol., 355, pp. 88-97, 2014. DOI: 10.1016/j.margeo.2014.05.015

Ruessink, B.G., Kleinhans, M.G. and Van Den Beukel, P.G.L., Observations of swash under highly dissipative conditions Waddensea, 103, pp. 3111-3118, 1998.

Ruggiero, P., Holman, R.A. and Beach, R.A.,Wave run-up on a high-energy dissipative beach, J. Geophys. Res., 109(C6), p. C06025, 2004. DOI: 10.1029/2003JC002160

Ruju, A., Lara, J.L. and Losada, I.J., Radiation stress and low-frequency energy balance within the surf zone: A numerical approach, Coast. Eng., 68, pp. 44-55, 2012. DOI: 10.1016/j.coastaleng.2012.05.003

Senechal, N., Coco, G., Bryan, K.R. and Holman, R.A., Wave runup during extreme storm conditions, J. Geophys. Res., 116(C7), p. C07032, 2011. DOI: 10.1029/2010JC006819

Kikkert, G.A., O’Donoghue, T., Pokrajac, D. and Dodd, N., Experimental study of bore-driven swash hydrodynamics on impermeable rough slopes, Coast. Eng., 60, pp. 149-166, 2012. DOI: 10.1016/j.coastaleng.2011.09.006

Pintado-Patiño, J.C., Torres-Freyermuth, A., Puleo, J.A. and Pokrajac, D., On the role of infiltration and exfiltration in swash zone boundary layer dynamics, J. Geophys. Res. Ocean., pp. 6329-6350, 2015.