Monitoring Coastal and River Zones

Coastal zones are continuously changing because of the dynamic interaction between the oceans and the land. Waves and winds along the coast are both eroding rocks and depositing sediment on a continuous basis.
EUROSENSE is monitoring coastal zones since the early 80’s. In order to monitor the whole natural sea defence (from near-shore up to the dunes), EUROSENSE performs both aerial LIDAR and bathymetric sounding surveys from the low water level up to the landside area of the dunes.

When combining both surveying techniques, bathymetric sounding (study of underwater depth) and aerial laser altimetry, on a regular basis, one obtains an accurate and total image of the morphological changes of the coastal area. Also, the tidal area between high and low tide is surveyed with both techniques, giving an extra quality control on the obtained survey data.

Click  to enlarge - Bedding 3D

Click to enlarge - Coastal differential

Through the LIDAR monitoring of the coastal zones on a yearly basis, differential maps can be created. Based on the yearly height measurements of the beach, the difference in sand volume can be calculated in m³ and plotted as a coastal differential map.

In the picture at the left a coastal differential map is presented (green means a strong increase in sand volume ( > 0.75m), red a decrease (< -0.75m))