The amount of hydrographic data is increasing
As the technology for ocean and coastal zone mapping has developed, the amount of hydrographic data has increased exponentially. The data acquisition equipment has become more accurate and produces high resolution data. At the same time, the equipment has become more affordable. The use of autonomous vessels further reduces the costs for marine spatial data. High data quality and decreased data acquisition costs have made the hydrographic data accessible to many, creating wider use of the data.
The survey sensors can be echosounders, LiDARs or lasers. LiDARs and lasers are more often used in the shallower coastal areas and above water port structures as sonar scanners are used in the deeper water. With a positioning system, the sensors create a point cloud with map coordinates of the measured area, which is then processed with hydrographic processing software to a 3D model.
Marine 3D data helps the asset managers make justified decisions
The hydrographic data can be used for creating maps or depth contours, detecting underwater objects or changes in bathymetry, for example. Especially in ports and seaways it is essential to know the exact depth and possible objects in the seabed, which affect the maritime transport. You need to know if there is enough depth for navigating vessels or if there is a need for dredging.
In addition, port structures have to be inspected for defects to ensure safety and to optimize operations of the port. Often the port areas and seaways are scanned repeatedly to learn the optimal cycle for maintenance procedures. Accumulation varies a lot between different areas of the port, and some structures face more stress from the environment or traffic than others. The comparison of datasets over time reveals those differences which is valuable information for planning of maintenance.
Online 3D platform for visualizing, sharing, and utilizing of the hydrographic data
In order to fully utilize the hydrographic data in decision making, the data has to be visualized, easily available, and usable for all the relevant stakeholders. GISGRO online platform allows easy sharing of the data as the processed point cloud can be uploaded to a cloud-based platform, which offers accurate visualization and an easy access to the data via a web browser.
GISGRO has tools for many kinds of measurements, checking the target depth, and comparing different datasets to detect changes, in map view or in 3D view, all available online without additional software. With GISGRO it is easy to use hydrographic data for everyday work in maintenance and planning. Below video introduces some of the hydrographic features of GISGRO.