AEGAEUM JOURNAL ISSN NO: 0776-3808 Cyclone and its Effect on Shoreline Changes in Archaeological Sites, East Coast of Tamil Nadu, India Sathiyamoorthy G, *Sivaprakasam Vasudevan, Selvaganapathi R & Nishikanth C. V Department of Earth Sciences, Annamalai University, Annamalainagar, Tamil Nadu, India. *
[email protected] ABSTRACT : The contact line between sea and land, is knows as shoreline and they are experiencing changes due to the long-shore current, tides, wave, and storm surges, etc. The Shorelines played a major role in human settlement and favours the clustering of Port cities from ancient to present. The changes in the shoreline directly affect the livelihood of the coastal cities and also worn out the maritime archaeological sites, particularly during the late Quaternary period. A few archaeological sites including Arikamedu, Poompuhar, Tharangambadi, and Sembiyankandiyur show a direct/indirect relationship with the shoreline changes between 1972 and 2018. The shoreline changes between Pondicherry and Nagapattinam patch, with respect to the archaeological sites, quantify erosion -20.52 m/period in Arikamedu, Poompuhar, and Tharangambadi and -25.28 m/period along Sembiyankandiyur region during a span of 46 years. The maritime Archaeological, pride sites like Poompuhar, Tharangambadi and Sembiyankandiyur on the coastal region were submerged in the sea, the remand parts are also under the threat to vanish at a faster rate. Keywords: LRR, EPR and NSM, Erosion and Accretion. 1. INTRODUCTION Coastal region of the south eastern part of India is significant with respect to archaeological studies. The modest tide and wave action in the Bay of Bengal has enabled the formation and continuance of many coastal sites.