Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (1) Autor Gamblin, C (1) Le Gall, Yves (1) Morizur, Yvon (1) Van Canneyt, O (1) Tipo do documento Text (1) Ano 2008 (1) País France (1) Idioma Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Tests d'efficacité du répulsif acoustique CETASAVER à bord des chalutiers commerciaux français Résultats obtenus au cours des années 2007 et 2008 ArchiMer Morizur, Yvon; Le Gall, Yves; Van Canneyt, O; Gamblin, C. An acoustic repellent was developed by Ixtrawl and Ifremer to mitigate incidental catches of common dolphins in trawl fisheries. The system developed-which bears the name of CETASAVER-was developed after behavioural tests performed on groups of common dolphins. These tests conducted at sea for the European project Necessity showed that the trajectories of animals could be changed by this pinger. The CETASAVER emits a beam directing conical with an opening between 75 and 15 degrees. This allows directional less disturbing environmental noise and must be directed towards the opening of the trawl and the frequency ranges from 30 to 150 kHz. The signals are modulated and pulsed. The average sound level is 178 dB which gives 139 dB at the entrance to the trawl... Tipo: Text Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/rapport-4506.pdf Registros recuperados: 1 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco