Optimizing Single Beam Data for Bathymetric Analysis

International Journal of Geoinformatics and Geological Science
© 2022 by SSRG - IJGGS Journal
Volume 9 Issue 3
Year of Publication : 2022
Authors : Itoro Udoh, Akwaowo Ekpa, James Mbat
How to Cite?

Itoro Udoh, Akwaowo Ekpa, James Mbat, "Optimizing Single Beam Data for Bathymetric Analysis," SSRG International Journal of Geoinformatics and Geological Science, vol. 9,  no. 3, pp. 10-24, 2022. Crossref, https://doi.org/10.14445/23939206/IJGGS-V9I3P102


Single beam echo sounding has been a reliable acoustic method for acquiring a depth of varying ranges with high accuracy, precision, and relatively low cost. Single beam data are valuable as ground truth data for many marine-based applications, project monitoring and bathymetry studies. In bathymetry mapping of part of Imo River, the cost-effectiveness of Single Beam Echo sounding data for generating three-dimensional bathymetric metrics for terrain characterization is demonstrated. Analysis of an accurate description of the riverbed is tested using two geo-statistic and deterministic interpolation methods. The gridding capability of Surfer 23 and ArcGIS 10.5 software and interpolation outputs from five interpolation techniques for the dataset are compared. Ordinary Kriging interpolation produced a more accurate digital depth model followed by an inverse multiquadric radial basis function. Fine and broad scale position bathymetry index and rugosity for the study area is produced to show the relative depth and slope of the seabed as well as the bathymetry's variability of slope and aspect. Resulting bathymetry metrics can be useful for navigational aid, hydrodynamic and ecological studies on the river. It can also serve as in situ depth data for calibrating and validating satellite-based bathymetry


Bathymetry position index, Bathymetric profiles, Depth derivatives, Interpolation, Single-beam data.


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