The Various Applications of Bathymetric LiDAR: Environment, Civil Engineering, and More
Bathymetric LiDAR is a recent technology that uses light to accurately measure the depth of aquatic environments.
Initially reserved for underwater mapping, this technology now sees its applications multiplying, particularly due to the decrease in implementation costs, making its use accessible to a broader range of sectors. Whether for environmental projects, coastal studies, or civil engineering works, bathymetric LiDAR offers fast, precise solutions suited to a wide range of needs. In this article, we will explore the various applications of bathymetric LiDAR and how it helps transform fields such as environmental management, civil engineering, and more.
1. Environmental Management and Protection
Monitoring Aquatic Ecosystems
The LiDAR bathymetric system allows for precise monitoring of coastal zones, lakes, estuaries, and rivers. This technology is used to assess the health of aquatic ecosystems and monitor key elements such as underwater vegetation distribution, sediments, and water quality. Thanks to its ability to cover large areas quickly, it has become an essential tool for biodiversity management and aquatic habitat preservation.
Monitoring climate change and coastal erosion
With the global warming and rising sea levels, the coastal zone mapping has become essential for anticipating flood and erosion risks. Bathymetric LiDAR allows for precise monitoring of the shoreline and identification of areas particularly vulnerable to erosion. The collected data can be used for coastal management and planning preventive actions to protect coastal infrastructure and ecosystems.
2. Civil Engineering and Infrastructure
Design and planning of coastal infrastructure
Bathymetric LiDAR plays a key role in the design of coastal infrastructure, such as harbours, dikes, and bridges. The precise surveys provided by this technology allow engineers to better understand the underwater topography and plan projects with increased accuracy, thus reducing risks and ensuring that the projects are suited to the aquatic environment in which they will be implemented.
Dredging operations
In ports and canals, dredging operations are necessary to maintain adequate depths for ship navigation.
The bathymetric LiDAR allows for monitoring sediment accumulation and planning dredging operations more effectively, ensuring that these operations are carried out only where needed.
3. Mapping and Management of Water Resources
Management of Watersheds and Flooding
Bathymetric LiDAR is used to map watersheds and identify flood risk areas. Its ability to accurately map watercourses and floodplains provides essential data for water resource management and natural hazard prevention. The collected data aids in the planning of water management infrastructure and the protection of sensitive areas during extreme weather events.
Hydrological studies
Hydraulic engineers rely on bathymetric LiDAR surveys to conduct hydrological studies and model water flow. This is particularly useful for predicting the effects of constructing dams, locks, or other structures influencing watercourses. With the precise data obtained through LiDAR, decision-makers can better understand how projects will impact water flow and take steps to mitigate environmental impacts.
4. Underwater archaeology and exploration
Mapping underwater archaeological sites
Bathymetric LiDAR has also found its place in the field of underwater archaeology. Its ability to capture detailed images of the seafloor enables the mapping of underwater archaeological sites. From ancient shipwrecks to submerged cities, this technology provides new perspectives in exploring the ocean floor.
5. Scientific research and oceanography
Oceanographic mapping
In oceanography, bathymetric LiDAR enables the mapping of coastal seafloors with exceptional precision. This helps scientists better understand marine current dynamics, sediment networks, and study underwater geological processes. It is also used to analyse marine habitats and monitor the impact of human activities on underwater ecosystems.
Conclusion
Bathymetric LiDAR is emerging as a versatile technology, used in fields ranging from environmental management and civil engineering to scientific research and underwater archaeology. With its precise and rapid surveys, this technology continues to transform the way we map and analyse aquatic environments. Whether you are an engineer, a resource manager, or a scientist, bathymetric LiDAR provides a powerful and innovative solution for obtaining valuable data and making informed decisions.