S SHANMUGA PRIYAA
Articles written in Journal of Earth System Science
Volume 130 All articles Published: 8 October 2021 Article ID 0211 Research article
Shoreline is a dynamic system where erosion/accretion patterns and sea-level rise takes place due to the natural marine processes and anthropogenic activities. The movement of suspended sediment along the coastal water is an indicator of erosion and deposition of the coastal landforms. This study aims to analysethe shoreline changes and the corresponding spatio-temporal pattern of suspended sediment concentration of the southern Kerala coast using Sentinel 2 MSI satellite images for the period from December 2018 to November 2019. Single band at 645 nm shows good correlation with better regression co-efficient in a closed or semi-enclosed lake that shows less complexity of water quality. Hence red band of Sentinel 2 MSI has been used to estimate the suspended sediments in this study. Total suspended sediment along the south Kerala coast ranging from 0–10 mg/l has been estimated from the satellite images. The seasonal pattern of suspended sediment concentration has been estimated from the satellite images (SENTINEL 2 MSI) for the period from December 2018 to November 2019. The suspended sediments derived from the satellite image have been compared with the corresponding Beld data. The suspended sediment concentration derived from the satellite images shows a correlation coefBcient R$^2$ = 0.85 with the Beld data. Similarly, the shoreline erosion and accretion have been analysed from the shoreline change analysis methods. In this study, monthly and seasonal shoreline changes have been estimated along the southern Kerala coast using multi-spectral and multi-temporal satellite imagery (SENTINEL 2 MSI) for thecorresponding available dates of the period from December 2018 to November 2019. The shoreline from the satellite image has been validated with the shoreline derived from the Beld collected beach profile data. The shoreline erosion and accretion have been compared with the sediment concentration map derived from the satellite images along the south Kerala coast. It is inferred that, with the use of satellite images, the relation between the erosion/accretion pattern and the suspended sediment pattern along the coast can be visualised and qualitatively studied.
Volume 130, 2021
Continuous Article Publishing mode
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