Part of: GS Prelims and GS Mains I– Culture& Geography
- The shoreline on the northern side of the Shore Temple in Mamallapuram, Tamil Nadu is facing severe sea erosion.
- The Public Works Department is awaiting funds to construct groynes for coastal protection at a cost of ₹95.95 crore.
- According to PWD, every year, nearly 4-5 m of the shoreline near the temple is declining.
- A groyne is a shore protection structure built perpendicular to the shoreline of the coast (or river), over the beach to reduce longshore drift and trap sediments. A groyne functions as a physical barrier by intercepting sand moving along the shore.
- Rock is often used as construction material, but wooden groynes, steel groynes, rubble-mound and sand-filled bag groynes, or groynes made of concrete elements can also be found. Rock groynes are generally preferred as they are more durable and absorb more wave energy due to their permeable nature.