Chasing tsunami deposits with GPR

Lucy Buck and Charlie Bristow - Birkbeck University of London

Investigations of tsunami sedimentology has expanded dramatically in recent years following the devasting ‘Boxing Day’ Indian Ocean Tsunami in 2004. Tsunamis cause significant coastal erosion and can deposit sand sheets on coastal plains. In this talk we demonstrate the potential to trace tsunami sands and associated erosional scours in the shallow subsurface using ground-penetrating radar (GPR). We will include examples form the 2004 Indian Ocean Tsunami in Thailand and Indonesia as well as the Storegga tsunamis in Scotland and the Shetland Islands.