Morphodynamic changes around subarnarekha coast: study using multi Change satellite data

The present study area is situated at the low laying coastal alluvial planes of the Subarnarekha delta in tropical region. Subarnarekha delta plain is a depositional coastal sector with active Chenier delta formation. A tremendous amount of sediments carried by river Subarnarekha throughout the year which is more responsible to develop the depositional coast, on the other hand wave reworking is going on with successive dry and wet phases. So many landforms have formed as well as many landform and other land features has been diminished. The formation of sand spits are the result of long shore deposition of the river sands to the south and north depending upon the shore line orientation and direction of dominant wind patterns in the deltaic coast. The removal of sand from sea beach occurs by long shore and off shore transport and by wind erosion. The beach has been eroded due to various coastal processes has been taken place and still they are in on-going process. Such variations in the shorelines of Subarnarekha delta is recorded by LISS-III image and true colour image (Google earth) and also by seasonal field survey at different coastal sectors.