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Mapping of underwater habitats based on the analysis of backscatter intensity of the return acoustic signal (CROSBI ID 228215)

Prilog u časopisu | stručni rad

Pribičević, Boško ; Đapo, Almin ; Kordić, Branko ; Pijanović, Nino Mapping of underwater habitats based on the analysis of backscatter intensity of the return acoustic signal // Annual ... of the Croatian Academy of Engineering, 1 (2016), 79-96

Podaci o odgovornosti

Pribičević, Boško ; Đapo, Almin ; Kordić, Branko ; Pijanović, Nino

engleski

Mapping of underwater habitats based on the analysis of backscatter intensity of the return acoustic signal

Mapping of underwater habitats, through a multidisciplinary approach, represents a fundamental prerequisite for adequate representation of physical and biological topologies with the objective of sustainable use and management of marine resources. Increased demand for diverse geoinformation resulted with the development of modern technologies and the acquisition of new knowledge in the field of underwater acoustics as the basic method of modern hydrographic survey. In addition to 3D modeling of the seabed, modern multibeam sonars allow possibility of processing the propagation and backscatter data of the acoustic signal trough the water column. By integration with the classical methods of underwater habitat mapping, complete coverage of the seabed with reliable high resolution data is effectively achieved. The collected data represents the basis for further advanced interdisciplinary analysis in GIS environment. The paper is theoretically based and methodologically appropriate representation of hydrographic surveying for the purpose of underwater habitat mapping in part of the southern coast of the Stari Grad bay on the island of Hvar in order to determine the state of underwater habitats of Posidonia seagrass. The paper describes the theoretical and empirical basis of the acoustic signal backscatter whose specificity is used here as an identifier type of sea bottom that is of underwater habitats. Key steps in the creation of maps of underwater habitats are discussed theoretically and practically presented on the basis of the data collected. Appropriate map of underwater habitats containing three basic classes based on data sampling was made. Conclusions and final observations which were derived through analysis of the results could show very useful in further study of the spatial distribution of underwater habitats.

Mapping; habitats; multidisciplinary approach; underwater acoustics; backscatter

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Podaci o izdanju

1

2016.

79-96

objavljeno

1332-3482

Povezanost rada

Geodezija