FN Archimer Export Format PT J TI Deep-towed High Resolution multichannel seismic imaging BT AF 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 AS 1:1;2:2;3:1;4:1;5:2;6:3;7:3;8:4;9:3;10:3;11:5;12:6;13:1; FF 1:PDG-REM-GM;2:PDG-REM-RDT-SI2M;3:PDG-REM-GM;4:PDG-REM-GM;5:PDG-REM-RDT-LDCM;6:PDG-IMN-SM-SEEE;7:PDG-IMN-SM-SEEE;8:PDG-IMN-SM-IIDM;9:PDG-IMN-SM-SEEE;10:PDG-IMN-SM-SEEE;11:;12:;13:PDG-REM-GM-LES; C1 IFREMER, REM GM, Ctr Brest, F-29280 Plouzane, France. IFREMER, REM RDT, Ctr Brest, F-29280 Plouzane, France. IFREMER, ISM SM S3E, ZP Bregaillon, F-83507 La Seyne Sur Mer, France. IFREMER, ISM SM IIDM, ZP Bregaillon, F-83507 La Seyne Sur Mer, France. High Tech Inc, Long Beach, MS 39560 USA. Sercel, F-44470 Carquefou, France. C2 IFREMER, FRANCE IFREMER, FRANCE IFREMER, FRANCE IFREMER, FRANCE HIGH TECH INC, USA SERCEL, FRANCE SI BREST TOULON SE PDG-REM-GM PDG-REM-RDT-SI2M PDG-REM-RDT-LDCM PDG-IMN-SM-SEEE PDG-IMN-SM-IIDM PDG-REM-GM-LES IN WOS Ifremer jusqu'en 2018 copubli-france copubli-int-hors-europe IF 2.566 TC 17 UR https://archimer.ifremer.fr/doc/00206/31745/35690.pdf LA English DT Article CR PRISME 2 BO L'Atalante DE ;Deep-towed seismics;Multichannel streamer;Seismic imaging AB 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. PY 2014 PD NOV SO Deep-sea Research Part I-oceanographic Research Papers SN 0967-0637 PU Pergamon-elsevier Science Ltd VL 93 UT 000343853200008 BP 83 EP 90 DI 10.1016/j.dsr.2014.07.013 ID 31745 ER EF