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- Title
Vulnerability assessment of environmental degradation due to coastal hazards using geospatial technology—a study of Puri coast along the Mahanadi Delta, India.
- Authors
Panda, Gopal Krishna; Chatterjee, Uday; Mishra, Monalisha; Mohanty, Ashutosh
- Abstract
This study makes an assessment of the risk of environmental degradation due to coastal hazards along Puri coast of the Mahanadi delta across Bay of Bengal, India, using geospatial technology. It analyses the vulnerability profile of environmental degradation by assessing the inherent hazards of the coastal zone such as ecosystem disruption, gradual coastal inundation, intrusion of salt water, coastal flooding, and erosion. The study uses Coastal Hazard Wheel model which is a multi-hazard assessment and management tool in a changing global climate using the biogeophysical parameters of the coast such as geomorphological layout, nature of wave exposure, range of tidal amplitude, coastal vegetation, balance and deficit of coastal sediments, and presence or absence of storm climate. The model uses multi-date remote sensing data from the open sources and a GIS framework to assess the problem and fieldwork for validation of its results. The study has generated data and maps about the degree to which environmental degradation is inherent to a particular location along the Puri coast. Taking together the data from the high and very high category, this study has identified that 86% of the coastline is highly vulnerable to coastal erosion, 72% to coastal flooding, 79% to salt water intrusion, and 92% moderately vulnerable to ecosystem disruption. But taking together all the five inherent hazards of the coast, 78% of its coastline is highly vulnerable to environmental degradation because of coastal hazards. The study revealed an increasing magnitude of this problem than earlier assessments by different researchers. The study has also identified a number of possible management options for the planners and program managers. The findings of this study are significant in understanding the environmental problems arising out of the inherent hazards of the coastal zone and use of open-source satellite data and geo-informatics-based CHW in assessing the problem for the coastal stakeholders.
- Publication
Arabian Journal of Geosciences, 2022, Vol 15, Issue 15, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-022-10578-5