Results of an Airborne LiDAR survey between Teignmouth and Sidmouth Ian Davies

Advantages of Bathymetric LiDAR Rapid Coverage Aircraft surveys at 100 – 150knots Swath width between 100 – 300m Seamless land and sea dataset. Economy of effort in shallow water due to fixed swath width. Flexibility Easy Access to Remote Areas Simultaneous Topographic and Bathymetric Data Collection Data resolutions from 1-7.5m achievable (Hydro) Cost Can be cheaper, and faster, than traditional methods due to potential coverage achieved 8-35km2 per hour

Principles of Bathymetric LiDAR Aircraft Carries a system consisting of: Two laser sources Green (hydro) and IR (topo) A Scanner Unit A Position and Motion Sensor IR laser reflects from Sea Surface, Green from Seabed Difference between two is the depth

Hawkeye II Scanner moves in an side to side scan pattern With a spot spacing of between 2-5m achieving depths of up to 50m in good conditions

Hawkeye Data Products Topographic DEM Bathymetric DEM Reflectance Data Seamless Datasets

Scope of Work

The Final Surveyed Area

The Data

The Data

The Data from Other Areas Mid Wales West Wales

The Data from Other Areas

Way Ahead Plan to Refly using Chiroptera II Bathymetric LiDAR shortly

Thank You