27% of coastline expanded between 1990 and 2018, according to a report by Union Ministry of Earth Sciences.
Context
27% of coastline expanded between 1990 and 2018, according to a report by Union Ministry of Earth Sciences.
Coastlines in India
- Length of the coastline of India including the coastlines of Andaman and Nicobar Islands in the Bay of Bengal and Lakshadweep Islands in the Arabian Sea is 7517 km.
- Length of Coastline of the Indian mainland is 6100 km which is surrounded by the Arabian Sea in the west, Bay of Bengal in the east, and the Indian Ocean in the south.
Factors and Causes of Soil Erosion due to Water
- Human Induced factors
- Faulty farming systems
- deforestation caused by overgrazing
- clearance of land for agricultural purpose
- construction, dam construction
- diversion of the natural course of rivers
- mining activities
Rainfall Intensity and Runoff
- The impact of raindrops will break up the soil and water build-up will create runoff, taking sediment with it
Why erosion in eastern coast more than western coast?
- The eastern coast underwent more erosion due to frequent cyclonic activities from Bay of Bengal in the past three decades, compared to the western coast, which remained largely stable.
Coast line erosion state-wise
- Puducherry (56 per cent)
- Kerala (41 per cent)
- Tamil Nadu (41 per cent)
- Andhra Pradesh (28 per cent)
- Gujarat including Daman and Diu (26 per cent)
- Odisha (26 per cent)
- Karnataka (24 per cent)
- Maharashtra (22 per cent)
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