GEOLINKS International Conference 2019, Book 3
VERIFICATION OF THE DIGITAL SEA BOTTOM MODEL BUILT BY BATHYMETRIC DATA – DEEP WATER STUDY
Assoc. Prof. Dr. Artur Makar
Data that come from multi- and singlebeam echosounders make a basic source for reliable and complex displaying of the seabed profile. Their quality and reliability have significant impact on safe shipping and navigation. These are main targets and purposes of the measurements. Thanks to detection and description of many underwater objects, shallows or other dangerous places, the hydrographical measurements do guarantee improvement of safe human activities at sea.
The measurement dynamics and variation of factors disturbing in time mean that the bathymetric measurements are especially difficult and they require experience in the process of planning, performing and elaborating the measurements. The geospatial data obtained for the need of creating a numerical model of the seabed must be reliable because it is not possible to compare them with any standard.
There is a method of verification of the geospatial data obtained by means of an MBES multibeam echosounder used in bathymetric deep-water maritime measurements presented in the article. Dynamic calibration, being a preliminary stage of the echosounding works, has been applied in the process of the model verification. Reference to DTM (Digital Terrain Model) verification in photogrammetry has been done – where ground points obtained in land survey make references.
Digital Terrain Model, Digital Sea Bottom Model, multibeam echosounder, calibration, verification