Comparison of backscatter and seabed topographic characteristics recorded by multibeam echosounder at Rewal Area - Southern Baltic Sea

Jarosław Tęgowski , Karolina Trzcińska , Łukasz Janowski , Aleksandra Kruss , Klaudia Kusek , Jarosław Nowak

Abstract

The main purpose of this research is to develop efficient and reliable acoustic techniques for monitoring geomorphological and sedimentary features of the Baltic seabed. Multibeam echosounder (MBES) measurements were carried out in the Baltic Sea at the Rewal area, which is characterized by diversified types of sediments, geomorphologic forms, and benthic habitats. An MBES provides two types of information - bathymetric data needed for the digital elevation model (DEM) construction, and relative backscattered intensity of the acoustic signal. The seabed features were extracted using a 2D Fourier transformation of the DEM. Spectral parameters of bottom rough surface were used for the classification of seafloor morphological types using a fuzzy logic classification algorithm. The other method was used for backscatter intensity, where the spectral parameters of angular dependency of bottom backscattered intensity were the input to the classification algorithm. The results of both methods were compared with the sedimentological information of the analysis of 56 sediment samples, and a good compatibility of the classifications was obtained.
Author Jarosław Tęgowski (FOG/IO/DMG)
Jarosław Tęgowski,,
- Division of Marine Geology
, Karolina Trzcińska (FOG/IO/DMG)
Karolina Trzcińska,,
- Division of Marine Geology
, Łukasz Janowski (FOG/IO/DMG)
Łukasz Janowski,,
- Division of Marine Geology
, Aleksandra Kruss (FOG/IO)
Aleksandra Kruss,,
- Institute of Oceanography
, Klaudia Kusek (FOG/IO/DMG)
Klaudia Kusek,,
- Division of Marine Geology
, Jarosław Nowak
Jarosław Nowak,,
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Pages303-306
Publication size in sheets0.50
Book Marszal Jacek, Kochańska Iwona (eds.): Proceedings of 2018 Joint Conference Acoustics: 11-14 September 2018, Ustka - Poland, 2018, Polish Acoustical Society - Gdańsk Division, ISBN 978-1-5386-7114-6, [978-1-5386-7113-9], 351 p.
Keywords in Englishmultibeam echosounder, backscattering, topography, seafloor classification algorithms, southern Baltic Sea, seafloor, acoustical classification of bottom habitats
DOIDOI:10.1109/ACOUSTICS.2018.8502330
Languageen angielski
Score (nominal)15
Score sourceconferenceIndex
ScoreMinisterial score = 15.0, 26-02-2020, ChapterFromConference
Publication indicators WoS Citations = 0.000
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