The new fisheries multibeam echosounder ME70: description and expected contribution to fisheries research
| Autor: | Laurent Berger, Verena M. Trenkel, Valérie Mazauric |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
0106 biological sciences
Ecology Computer science Research areas 010604 marine biology & hydrobiology Three dimensional 04 agricultural and veterinary sciences Acoustics Aquatic Science Oceanography 01 natural sciences Echo sounding Abundance 040102 fisheries 0401 agriculture forestry and fisheries Behaviour 14. Life underwater Fisheries Research Ecology Evolution Behavior and Systematics Marine engineering Communication channel |
| Zdroj: | ICES Journal of Marine Science (1054-3139) (Oxford university press), 2008-05, Vol. 65, N. 4, P. 645-655 |
| Popis: | Trenkel, V. M., Mazauric, V., and Berger, L. 2008. The new fisheries multibeam echosounder ME70: description and expected contribution to fisheries research. – ICES Journal of Marine Science, 65: 645–655. 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 70–120 kHz, spanning at most 150°. All beams are stabilized in vessel roll and pitch. It has reduced side-lobe levels, up to −70 dB (two-way) instead of the −25 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|