Alongshore wave energy flux (Pl) was analysed for the coast of Buenos Aires, Argentina. Pl is frequently used to estimate the alongshore sediment transport rate. Pl was estimated from simulated offshore wave parameters obtained from a validated regional SWAN model forced by NCEP/NCAR I, NCEP/DOE II, ERA-Interim and JRA-25 global reanalysis for the year 2005. It was obtained that Pl flows eastwards/northeastwards and increases irregularly from Bahia Blanca to Mar del Plata. Negative and positive space imbalances in Pl along the coast could explain the natural erosive and constructive processes detected between Mar del Plata and Punta Medanos. High inter-annual variability was noted in Pl data series computed from simulated wave parameters using SWAN model forced by NCEP/NCAR I for the period 1980-2012. Anomalous Pl values were detected in 1983, 1993 and 1998 which are in agreement with reported ENSO events. Concluding, the applied methodology seems to constitute a very reasonable alternative to study the space and time variability of Pl at the Buenos Aires coast, between Bahia Blanca and Punta Medanos.
1.Serv Hidrog Naval, Ave Montes de Oca 2124 C1270ABV, Buenos Aires, DF, Argentina 2.Consejo Nacl Invest Cient & Tecn, Godoy Cruz 2290 C1425FQB, Buenos Aires, DF, Argentina 3.Univ Buenos Aires, Dept Ciencias Atmosfera & Oceanos, C1428EGA, Buenos Aires, DF, Argentina
Recommended Citation:
Echevarria, Emilio R.,Dragani, Walter C.,Worner, Stefania. A comprehensive study about alongshore wave energy flux in the coast of Buenos Aires, Argentina[J]. JOURNAL OF COASTAL CONSERVATION,2019-01-01,23(2):435-443