Changes in Miramar-Caranzalem Beach, Goa, during the period of shoaling in Aguada Bar

G.N. Swamy

Abstract



The paper presents the results of the studies on changes in the beach features such as accretion and erosion, at four stations along Miramar-Caranzalem Beach, Goa, India, during the southwest monsoon period of 1973. Starting from late May, erosion and accretion have alternately recurred with a periodicity of 15-20 days between an accretion and the next erosion, at all the four stations. During the observation period, the southern side of the Miramar Beach had a net accumulation of beach material whereas the northern side suffered severe erosion, the remaining portions being eroded to a lesser degree. The cyclic changes in the beach reflect a shifting balance between the wave activity and the littoral currents associated with the anticlockwise gyral circulation in the nearshore regions of Miramar-Caranzalem Beach, which is also responsible for the shoaling of the Aguada Bar during the southwest monsoon

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