TY - JOUR T1 - The new fisheries multibeam echosounder ME70: description and expected contribution to fisheries research A1 - Trenkel,Verena A1 - Mazauric,Valerie A1 - Berger,Laurent AD - IFREMER, Dept EMH, F-44311 Nantes 03, France. AD - IFREMER, Dept NSE, Plouzane, France. UR - https://archimer.ifremer.fr/doc/00000/4117/ DO - 10.1093/icesjms/fsn051 KW - Three dimensional KW - Behaviour KW - Acoustics KW - Abundance N2 - Recently, Simrad in collaboration with Ifremer developed a calibrated, multibeam, vertical echosounder (ME70) for fisheries research. We describe its capabilities and technical limitations. The ME70 has up to 45 beams with distinct frequencies in the range 70120 kHz, spanning at most 150 degrees. All beams are stabilized in vessel roll and pitch. It has reduced side-lobe levels, up to -70 dB (two-way) instead of the -2S dB (one-way) of conventional systems. We outline research areas for which the ME70 might provide new types of information and hence lead to novel insights. We illustrate the potential contributions with datasets collected in the English Channel and on the continental-shelf break of the Bay of Biscay. Finally, future research and developments using the new system are outlined. Y1 - 2008/05 PB - Oxford university press JF - ICES Journal of Marine Science SN - 1054-3139 VL - 65 IS - 4 SP - 645 EP - 655 ID - 4117 ER -