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dc.contributor.authorEspinosa, V.
dc.contributor.authorSoliveres, E.
dc.contributor.authorCebrecos, A.
dc.contributor.authorPuig, V.
dc.contributor.authorSainz-Pardo, S.
dc.contributor.authorde-la-Gándara, F. (Fernando) 
dc.date.accessioned2017-03-05T11:00:27Z
dc.date.available2017-03-05T11:00:27Z
dc.date.issued2011
dc.identifier.urihttp://hdl.handle.net/10508/10804
dc.description.abstractHydroacoustic monitoring of fish growing in sea cages needs of an accurate relationship between fish size and target strength (TS) for every species of commercial interest. We discuss the conditions for TS measurement in near range conditions in sea cages for the case of the dorsal and ventral aspects of gilthead sea bream and bluefin tuna. Gilthead sea bream dorsal and ventral TS distributions, obtained with a split beam echosounder, are unimodal and the same results are derived for single beam data analysis when specific processing threshold criteria are applied. The expected linear relationship between the average TS and the logarithm of fish length is only found for the ventral case, being more accurate the uncompensated TS single beam analysis, probably due to near range errors. Bluefin tuna dorsal measurements performed in a fattening farm from February to July did not show a significant variation of TS distributions, and we propose a synchronized system of echosounder and video recordings, in order to relate target strength and orientation and size of specific tuna in the acoustic beam. Preliminary results indicate that only ventral TS values correlate properly with tuna size.es_ES
dc.language.isoenges_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectBluefin tunaes_ES
dc.subjectThunnus thynnuses_ES
dc.subjectGilthead seabreames_ES
dc.subjectSparus aurataes_ES
dc.subjectsea cageses_ES
dc.subjectechosounderes_ES
dc.subjectacousticses_ES
dc.subjectgrowth monitoringes_ES
dc.titleGrowing monitoring in sea cages: TS measurements issueses_ES
dc.typeconferenceObjectes_ES
dc.identifier.bibliographicCitation34th Scandinavian Symposium on Physical Acoustics. (2011 - 2011. Gelio (Norway)). 2011. . En: , .*
dc.publisher.centreCentro Oceanográfico de Murciaes_ES
dc.rights.accessRightsopenAccesses_ES
dc.subject.asfafish es_ES
dc.subject.asfamonitoring es_ES
dc.subject.asfacages es_ES
dc.subject.asfaconferences es_ES
dc.subject.asfaclassification es_ES


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