Author(s): K. Saikrishnan; K. V. Anand; V. Agilan

Linked Author(s):

Keywords: Coastal zone; EPR method; Remote sensing; Supervised classification

Abstract: The coastal zone is one of the most dynamic environments on earth. Geologic, physical, biologic, and anthropomorphic factors shape and constantly modify the coast. Accurate shoreline data is required to design coastal protection structures, identify vulnerable areas and for coastal developmental plans. The availability of satellite data has helped to generate information about the coastal and marine environment. It is efficient in monitoring the changes taking place in the coastal zone. Remote sensing technology has been used to map and effectively monitor shoreline changes in different locations as it provides long-term data. In the present study, shoreline change analysis is carried out for 10 years (2011–2020) along the Kozhikode coast, a district located in the northern part of Kerala. Satellite images from Cartosat 1 and Resourcesat 2 are used in the study. The shoreline change rate for 10 years is calculated using the end point rate (EPR) method with Digital Shoreline Analysis System (DSAS). Based on the shoreline change rates values obtained from DSAS analysis, the location is classified into 5 classes (high, moderate, low erosion, stable and accreting coast). The shoreline change rate ranges from -30 m/year to 20 m/year along the Kozhikode coast. The analysis shows that 64.6% of the district coast is under erosion and 35.4% of the coast is stable and accreting. Locations of erosions are identified so that proper protective measures can be taken to reduce the rate of erosion along the coast.

DOI: https://doi.org/10.1007/978-981-97-6009-1_16

Year: 2022