Utilising Photogrammetry to make effective, informed decisions about beach and coastal management.
(Image: Aerial Survey of North Burleigh – approximately 500m stretch )
Regular aerial mapping and monitoring enables effective and informed decisions regarding the health, stability and accessibility of the coastline and associated infrastructure to be made with confidence. Our Photogrammetry team is able to capture large areas in a single day without any disruption to the public. The data collected is able to visually demonstrate vulnerable zones, effectiveness of new regeneration areas and changes in sand volumes.
Benefits of Photogrammetry for Coastal Mapping:
- Survey accurate comparison of coastal changes & sand volume calculations
- Monitor progress & effectiveness of dune restoration / regeneration areas.
- Predict impact on the coastal foreshore caused from major weather events (storms, king tides).
- Thorough assessment of vulnerable and maintenance areas (utilising 3D data sets).
- Assists with the planning of new infrastructure & development along the coastline.
- Formulates key information required for an effective Coastal Management Plan.
- Fast, effective & accurate data acquisition.
- Survey accurate visual analysis through orthographic imagery of subject areas (offers a wider data set than traditional surveys)
Comparison of methods:
Important: data collected by our team is able to be further post-processed if required to generate additional visual underlays, models or terrain maps. This allows greater flexibility should additional information be required at a later date, whilst minimising project costs.
CASE STUDY
Location: North Burleigh Beach
Bennett + Bennett undertook a detailed coastal monitoring survey for a 500m stretch (approx.) of the foreshore at North Burleigh. The assessment was conducted to analyse the impact of coastal erosion and calculate the current volumes of sand. Volumes were then able to be compared with existing survey data to establish the changes within the zone.
Outcome: Survey results were compared with previous monitoring conducted 3.5 months earlier. The difference in this instance indicated that the zone had a volume gain of 2232m2.
Services utilised: Photogrammetry – Aerial Monitoring | Digital Terrain Model | Rectified Orthographic Imagery
Method: Our aerial photogrammetry team was able to capture the entire zone in a single visit with no disruption to the public. This technique is fast and precise in comparison with traditional methods and offers considerable improvement in the accuracy of loss of gain volumes.
