Dynamic Changes
in Coastal Geomorphology of Shiroda Coasts, using Remote Sensing and GIS: An Approach
to Climate Change and Coastal Disaster Risk
Sapkale J.B., Mane M.M., Susware N.K. and Sapkale S.J.
Disaster Advances; Vol. 16(12); 20-32;
doi: https://doi.org/10.25303/1612da020032; (2023)
Abstract
The coastline is a unique land feature formed through the interaction between land
and sea. It is essential to monitor and detect hotspots and observe spatial and
temporal influences of climate change in the coastal environment. Coastal landform
changes can be best studied through remote sensing data. This study examines the
dynamic changes in the sand spit and associated coastal area of the Shiroda coasts
of Sindhudurg district. The Normalized Difference Water Index (NDWI) was used to
distinguish land and water and the area was calculated by reclassifying the NDWI
index of all images with two classes- land surface of sand spit and water.
It was found that the spit area is decreasing seasonally at a dynamic rate. Additionally,
geomorphic maps were prepared for the study area and showed disastrous changes in
the coastal landforms. It is a need that coastal communities worldwide must address
the challenges of coastal flooding and rising sea levels caused by climate change.
Climate change is causing uneven rainfall distribution, storms and cyclones, leading
to coastal erosion, flooding and landform damage. Additionally, it has a negative
impact on the geomorphic features of coastlines.
