%0 Journal Article
%T Identifying lakebed nature: is it feasible with a combination of echosounder and Sonar5-pro?
							| Advances in Oceanography and Limnology
%A Christine Argillier
%A Jean Guillard
%A Muriel Gevrey
%A Thomas Poulain
%J Advances in Oceanography and Limnology
%D 2011
%R https://doi.org/10.4081/aiol.2011.5316
%X Since a few decades, underwater substrata can be characterized by methods using acoustic technology. Compare to traditional in situ grabbing techniques (bottom grab sampler, video camera,£¿¡­), these methods allow a better spatial resolution. Until today, these acoustical techniques required specialized signal processing materials. This document presents works about lakebed classification using single beam echo sounder and a post processing software (Sonar5) dedicated to the estimation of fish biomass. Indeed, an underwater substrate analyzing module based on the theory developed by Orlowski (Oceanologia 19 (1984), pp. 61¨C78) has just been implemented in the sofware. An optimum configuration have been selected and permitted to classify four different natures of substrata: silt, sand, sand & stones, and rock. A substrata nature map of an area known as an arctic charr (emblematic salmonid of the alpine big lakes) reproduction site has been done and shows the system's performances
%K Lakebed
%K Sonar5-pro
%K acoustic
%K echo sounder
%U https://www.pagepressjournals.org/index.php/aiol/article/view/5316