Assessing Morphological Changes in Ghoramara Island, Sagar Block, South 24 Parganas, Sundarban

Abstract: This study aims to draw attention to the problem of Ghoramara Island's ongoing submergence and reshaping in relation to the island's natural ecosystem. Remote sensing and GIS will be the primary tools to examine the situation and provide controls. The morphological alteration of the island between 2010 and 2022 has been studied in great detail. The island's size has decreased to 3.49 square kilometers for several reasons, including anthropogenic and natural processes occurring in this area. An NDVI, or a Normalized Difference Vegetation Index, has also been developed to monitor changes in the vegetation cover between 2016 and 2022. The island has shrunk as a result of storm surges, and pictures clearly show where the tropical cyclones Amphan and Yaas struck the land mass and inflicted significant damage. To halt erosion, earthen embankments were constructed. A bioengineering approach to solving the problem was tried but was ineffective. If the government can offer effective management of the Ghoramara Island coast protection program, which incorporates bioengineering methods and is already in operation, this could greatly help the locals. Ghoramara is eroding due to a variety of circumstances, but if the locals want to halt this, they must take the appropriate measures. For instance, they should crop scientifically, plant trees on the island's side, and have the local government maintain the earthen ridges. Erosion and channel sedimentation will stop if the channel's depth can be maintained.