Abstract
The Redi beach of Sindhudurg district, West Coast of India was studied for its morphological and magnetic mineralogical changes brought by the changes in precipitation. Annual and seasonal data was collected to decipher the erosive/accretion pattern of the beach sediments. The microtexture on the surface of sand grains was used to understand the wave energy conditions along this beach through Scanning Electron Microscopy (SEM). The quantum of magnetic minerals was found to be quite high in 2003 at stations 1, 2, 3, and 6 post-monsoon; and at stations 4 and 5 pre-monsoon. On the other hand, in 2004, the average concentration of magnetic minerals was more at station 1 pre-monsoon; at stations 2, 3, and 5 post-monsoon; and at stations 4 and 6 during monsoon season. The overall concentration of magnetic minerals decreased in 2004 compared to 2003, reflecting the influence of monsoon on the erosive/accretion pattern on this beach, apart from beach morphology, winds, tides, and longshore currents. This will help better strategize management plans for beach wellbeing in many parts of the world.KeywordsBeachSEMMagnetic and geomorphological changesMonsoon
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