Remote bathymetry and current mapping around shore-parallel breakwaters

Surveying very shallow coastal areas, particularly around coastal defences, can be a logistically difficult and time consuming process. A marine-radar based bathymetry mapping technique has been used to remotely map the embayments around a series of shore-parallel breakwaters at Sea Palling on the south east coast of England during the LEACOAST2 project. A comparison between bathymetric maps conducted using conventional survey techniques and the radar based technique is presented together with measurements of tidal currents mapped using the same remote sensing method and compared with ADCP data during a storm event.