Creating a backscatter multispectral mosaic with the R2Sonic 2024 Echosounder

Abstract

The backscatter in Hydrographic surveys (LH) at the time of bathymetry is to measure the response of the acoustic pulse upon reaching the seabed, one part is reflected and another is absorbed by the type of sediment that exists on the bottom, the main objective The purpose of this work is to create a multispectral mosaic with the Broadband Multibeam Echosounder (MBES) R2Sonic 2024, in order to characterize the seabed through the use of different frequencies (170 kHz, 330 KHz and 450 kHz). Therefore, bathymetric data were obtained from the hydrographic survey carried out in the Port of Veracruz, highlighting that only one area of the seabed of said Port was analyzed, starting from the cleaning of the data with Hypack, the creation of the reference surface with the Fledermaus software and finally the backscatter data processing with the FMGeocoder Toolbox software. The processing allowed us to obtain as a final product a backscatter multispectral mosaic with acceptable parameters (due to the missing information of the 330 kHz frequency, but it was replaced by the 200 kHz one), which signify the beginning of the implementation of these mosaics in This area of research with multiple hydrographic, oceanographic and geological applications, due to the fact that currently there are not many studies on this subject in Mexico.