Threats to coastal communities of Mahanadi delta due to imminent consequences of erosion - Present and near future

The Science of the Total Environment
Anirban MukhopadhyaySugata Hazra

Abstract

Coastal erosion is a natural hazard which causes significant loss to properties as well as coastal habitats. Coastal districts of Mahanadi delta, one of the most populated deltas of the Indian subcontinent, are suffering from the ill effects of coastal erosion. An important amount of assets is being lost every year along with forced migration of huge portions of coastal communities due to erosion. An attempt has been made in this study to predict the future coastline of the Mahanadi Delta based on historical trends. Historical coastlines of the delta have been extracted using semi-automated Tasselled Cap technique from the LANDSAT satellite imageries of the year 1990, 1995, 2000, 2006 and 2010. Using Digital Shoreline Assessment System (DSAS) tool of USGS, the trend of the coastline has been assessed in the form of End Point Rate (EPR) and Linear Regression Rate (LRR). A hybrid methodology has been adopted using statistical (EPR) and trigonometric functions to predict the future positions of the coastlines of the years 2020, 2035 and 2050. The result showed that most of the coastline (≈65%) is facing erosion at present. The predicted outcome shows that by the end of year 2050 the erosion scenario will worsen which in turn would...Continue Reading

References

Oct 5, 2011·PloS One·Bryan P WallaceRoderic B Mast
Oct 16, 2015·Nature·Catherine E LovelockTran Triet

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Citations

Apr 8, 2021·Journal of Environmental Management·Mohit Prakash Mohanty, Subhankar Karmakar
Feb 15, 2019·The Science of the Total Environment·Amit GhoshSugata Hazra

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