©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2020 Biological and Chemical Oceanography Data Management Office."The split-beam echosounder has a transducer which is divided into four quadrants.The target direction is determined by comparing the signals received by each quadrant... The transmission pulse is applied to the whole transducer but the signals received by each quadrant are processed separately...The target strength is estimated from the transducer sensitivity in the relevant direction, namely the beam pattern and the on-axis sensitivity." From "Fisheries Acoustics: Theory and Practice" by E. John Simmonds, D. N. MacLennan, Wiley-Blackwell; 2 edition.
| Dataset Name | PI-Supplied Description | PI-Supplied Name |
|---|---|---|
| Trawl metadata: date, time, duration, number of fish in cage, manipulations from F/V Stormy Weather NEC-HH2006-1 in the Gulf of Maine, off New Hampshire coast from 2008-2008 (NEC_ProjDev project) | Simrad EK60 with 38- and 120-kHz split-beam echosounders - used to collect acoustic backscatter of the fish in the cage. The circular beamwidth of the 38 kHz and 120 kHz transducers are 12° and 7°, respectively. | Split-Beam Echosounder |
| Echosounder data from goliath grouper aggregations in Jupiter, FL from August 31 until November 30, 2020. | Simrad ES38-10 and ES120-7C Splitbeam echosounders. Echosounders were calibrated using standard techniques described by Demer et al. (2015). | Simrad ES38-10 and ES120-7C Splitbeam echosounders |