Abstract
The beach profile changes form the primary aspect of the field study in understanding coastal processes as they vary concerning different coasts, site conditions, and wave characteristics. In this study, beach profile changes on an open coast and near an estuary are quantified through field investigations conducted over a couple of years. The changes in the beach profiles are compared temporally and spatially. The data was collected on the first spring of every month using Real-Time Kinematic Global Positioning System (RTK-GPS) from May 2017 to April 2019. The accuracy of data collected using RTK-GPS is 8–15 mm. The study areas are considered an open coast in Devaneri, Tamil Nadu, and near an estuary with its mouth being trained by a pair of training walls in Karaikal, Puducherry, India. Both the sites are located along the Southeast coast of India and are 300 km apart. The open coast has remained constant with minor changes in the profiles, and the one near an estuary coast undergoes significant changes seasonally and spatially. It is observed that the presence of coastal structures dictates the terms in the erosion/ accretion process on the coast.
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