Data/hora: 07/06/2024 00:23:16

Provedor de dados: 	5	
País: 	France	
Título: 	Deep-towed High Resolution multichannel seismic imaging	
Autores: 	Marsset, Bruno; Menut, Eric; Ker, Stephan; Thomas, Yannick; Regnault, Jean-pierre; Leon, Pierre; Martinossi, Henri; Artzner, Laurent; Chenot, Damien; Dentrecolas, Stephane; Spychalski, B.; Mellier, G.; Sultan, Nabil.	
Data: 	2014-11	
Ano: 	2014	
Palavras-chave: 	Deep-towed seismics; Multichannel streamer; Seismic imaging.	
Resumo: 	High Resolution (220–1050 Hz) seismic acquisition performed in deep water using deep-towed systems provides unrivalled lateral resolution when compared to conventional surface seismic. The lateral resolution of these acquisitions is controlled by the width of the first Fresnel zone, taking advantage of their positions close to the sea bottom. No current existing deep towed equipment can benefit from seismic imaging processing techniques to improve this resolution as a consequence of positioning inaccuracies. The technological developments of a digital deep-towed multichannel streamer are presented with a particular attention to positioning: each hydrophone incorporates a pitch, roll and heading sensor in order to monitor the constant deformation of the streamer in operation. The sea trials took place in July 2013 in the Mediterranean Sea. Pre-stack depth migration applied to the deep-towed multichannel data illustrates the potential of this emerging methodology in terms of penetration (12 dB improvement in Signal/Noise) and lateral resolution (mean signal wavelength: 3 m) when compared with deep-towed single-channel acquisition.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00206/31745/35690.pdf

DOI:10.1016/j.dsr.2014.07.013

https://archimer.ifremer.fr/doc/00206/31745/	
Editor: 	Pergamon-elsevier Science Ltd	
Formato: 	application/pdf	
Fonte: 	Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2014-11 , Vol. 93 , P. 83-90	
Fonte: 	2014 Elsevier Ltd. All rights reserved.

info:eu-repo/semantics/openAccess

restricted use