Morphologycal and sedimentary variations of beaches of General Alvarado Munucipality, Buenos Aires, Argentina
DOI:
https://doi.org/10.23854/07199562.2021571esp.Merlotto55Abstract
Beaches are considered a fragile and complex natural environment. To achieve the design of a coastal management, measures according to the characteristics and priorities of each beach, it is essential to know each particular beach morphodynamics. In the present study, volumetric and sedimentary variations of beaches located in Mar del Sur and Miramar, coastal towns of the municipality of General Alvarado, were evaluated through topographic profiles and seasonal sedimentary samplings. In general, beach widths have increased in all the measured beaches, except in the south of the studied area, where it remained stable. In the south, there is evidence of an erosive process that decreases towards the north of the study area. Despite being the most urbanized, the beaches of Miramar are in equilibrium or in evident progradation. In addition, important changes were observed due to summer/winter seasonal cycles, as well as the recovery of beaches after post-storm periods. Regarding the granulometric composition of beaches, medium-sized sands predominate in Miramar while fine sands are present towards the south of the study area. Because of the absence of similar studies in the area, these results constitute an important contribution for the elaboration of a coastal management programme for the municipality.
Downloads
References
ANFUSO, G., BELLO, E., BENAVENTE, J., NACHITE, D. y MACIAS, A., “Características morfológicas y variabilidad volumétrica de las playas del litoral entre Ceuta y Cabo Negro (Marruecos)”. Ciencias Marinas, vol. 32, 2006, no. 3, p. 579-588.
BÉRTOLA, G.R.. “21 years of morphological modifications in on urbanized beach (Playa Grande, Mar del Plata, Argentina)”. Thalassas, vol. 17, no. 2, 2001, p. 21-36.
BLOTT, S.J. y PYE, K. “Gradistat: A grain size distribution and statistics package for the analysis of unconsolidated sediments”. Earth Surface Processes and Landforms, vol. 26, no. 11, 2001, p. 1237-1248.
CAMINO, M., LÓPEZ DE ARMENTIA, A. y DEL RÍO, J.L. “Análisis de las variaciones en la función amenidad de ambientes costeros por efecto de la minería de áridos y la urbanización. Caso de estudio: Mar del Sud, provincia de Buenos Aires”.
Párrafos Geográficos, vol. 10, no. 2, 2011, p. 130-145.
CODIGNOTTO, J.O., DRAGANI, W.C.; MARTIN, P.B., SIMIONATO, C.G., MEDINA, R.A. y ALONSO, G. “Wind-wave climate change and increasing erosion in the outer Río de la Plata, Argentina”. Continental Shelf Research, vol. 38, 2012, p. 110-116.
CERC (Coastal Engineering Research Center), 2002. Shore Protection Manual. Coastal and Hydraulics Laboratory. U.S. Army Engineer Research and Development Center. Washington DC, U.S. Government Printing Office, 2500 p.
FIORE, M.M.E., D´ONOFRIO, EE., POUSA, J.L., SCHNACK, E.J. y BÉRTOLA, G.R. “Storm surges and coastal impacts at Mar del Plata, Argentina”. Continental Shelf Research, vol. 29, no. 14, 2009, p. 1643-1649.
HILL, H.W., KELLEY, J.T., BELKNAO, D.F. y DICKSON, S.M. “The effects of storms and stormgenerated currents on sand beaches in Southern Maine, USA”. Marine Geology, vol. 210, no. 1-4, 2004, p. 149-168.
ISLA, F.I. “Disponibilidad de arena para el refulado de las playas de Miramar y Chapadmalal, Argentina”. Revista de la Asociación Geológica Argentina, vol. 58, no.3, 2003, p. 311-320.
ISLA, F.I., FARENGA, M.O., CORTIZO, L.C., BÉRTOLA, G.R. y SERRA, S.B. “Dinámica morfosedimentaria de playas de arena y grava de la Barrera Austral: Mar del Sud, Arenas Verdes y Costa Bonita”. Revista de la Asociación Argentina de Sedimentología, vol. 4, no. 1, 1997, p. 15-24.
ISLA, F.I., CORTIZO, L.C y TURNO ORELLANO, H.A. “Dinámica y evolución de las barrerasmedanosas, provincia de Buenos Aires, Argentina”. Revista Brasileira de Geomorfología, vol. 2, no. 1, 2001, p. 73-83.
ISLA, F.I., CORTIZO, L., MERLOTTO, A., BÉRTOLA, G., PONTRELLI ALBISETTI, M. y FINOCCHIETTI, C. “Erosion in Buenos Aires
province: Coastal-management policy revisited”. Ocean & Coastal Management, vol. 156, 2018, p. 107-116.
LAGRANGE, A., 1993. Mar, playas y puerto. Una visión diferente. Mar del Plata: Fundación Bolsa de Comercio, 556 p.
MASSELINK, G. y HUGHES, M.G., 2003. Introduction to Coastal Processes and Geomorphology. London: Oxford University Press Inc., 354pp.
MERLOTTO, A. y BÉRTOLA, G.R. “Coastline evolution at Balneario Parque Mar Chiquita, Argentina”. Ciencias Marinas, vol. 35, no. 3, 2009, p. 271-286.
MERLOTTO, A. y PICCOLO, M.C. “Tendencia climática de Necochea-Quequén (1956-2006), Argentina”. Investigaciones Geográficas, vol. 50, 2009, p. 143-167.
MERLOTTO, A., BÉRTOLA, G.R. y PICCOLO, M.C. “Características del oleaje y vientos del sector costero del partido de Necochea, Buenos Aires, Argentina”. Revista Geográfica, vol. 147, 2010, p. 113-131.
MERLOTTO, A., BÉRTOLA, G.R. y PICCOLO, M.C. “Seasonal morphodynamic classification of beaches in Necochea municipality, Buenos Aires Province, Argentina”. Ciencias Marinas, vol. 39, no. 4, 2013, p. 331-347.
MERLOTTO, A., BÉRTOLA, G.R., ISLA, F.I., CORTIZO, L.C y PICCOLO, M.C. “Short and medium-term coastal evolution of Necochea Municipality, Buenos Aires province, Argentina”. Environmental Earth Sciences, vol. 71, no. 3, 2014, p. 1213-1225.
PERILLO, G.M.E., PÉREZ, D.E., PICCOLO, M.C., PALMA, E.D. y CUADRADO, D.G. “Geomorphologic and physical characteristics of a human impacted estuary: Quequén Grande River Estuary, Argentina”. Estuarine, Coastal and Shelf Science, vol. 62, no. 1-2, 2005, p. 301-312.
POUSA, J., TOSI, L., KRUSE, E., GUARAGLIA, D., BONARDI, M., MAZZOLDI, A., RIZZETTO, F. y SCHNACK, E. “Coastal processes and environmental hazards: the Buenos Aires (Argentina) and Venetian (Italy) littorals”. Environmental Geology, vol. 51, no. 8, 2007, p. 1307-1316.
SCHNACK, E.J., POUSA, J.L. e ISLA, F.I.. “Erosive processes on the sandy coastline of Argentina. Vechtaer Studien zur” Angewandten Geographie und Regionalwiseenschaft, vol. 20, 1998, p. 133-136.
VERÓN, M. y BÉRTOLA, G.R. “Aplicación del método de flujo de energía en el litoral de la provincia de Buenos Aires, Argentina”. Latin American Journal of Sedimentology and Basin Analysis, vol. 21, no. 1, 2014, p. 17-23
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Revista Geográfica de Chile Terra Australis
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright notice:
Revista Geográfica de Chile Terra Australis retains the economic rights (copyright) of the works published in the Revista Geográfica de Chile Terra Australis. The reuse of the content is allowed under a license:
CC BY
Recognition
This license allows others to distribute, remix, tweak and build upon your work, even for commercial purposes, as long as you are acknowledged as the author of the original creation. This is the most helpful license offered. It is recommended for maximum dissemination and use of the materials subject to the license.
