Broadband dataset example collected with a WBAT

Date 2021-09
Author(s) Barbin LaureORCID1, Habasque JeremieORCID2
Affiliation(s) 1 : Institut de Recherche pour le Développement, UMR ENTROPIE, IRD, Univ Réunion, CNRS, Nouméa, Nouvelle-Calédonie
2 : Institut de Recherche pour le Développement, UMR LEMAR, IRD de Bretagne, BP70 29280 Plouzané, FRANCE
DOI 10.17882/89526
Publisher SEANOE
Keyword(s) ACOUSTICS, PACIFIC OCEAN, MICRONEKTON
Abstract

This dataset contains broadband acoustic data collected with scientific echosounders in the West Pacific between Nouméa and Micronesian Islands during Warmalis 1 cruise performed onboard the French R/V ALIS in 2021 in the framework of the program «MICROPAC».

Licence CC-BY-NC-SA
Acknowledgements We want to acknowledge R/V ALIS crews that made the survey possible.
Sensor metadata

A self-contained scientific echosounder system (SIMRAD Wide-Band Autonomous Transceiver (WBAT); SIMRAD Kongsberg Maritime AS, Horten, Norway) was equipped with two split-beam transducers SIMRAD EK80 facing downwards, operating at a frequency range of 35-45 kHz (ES38-18DK-Split) and 90-170 kHz (ES120-7CD). The two transducers transmitted alternately by periods of 1 minute at ping interval of 0.3 seconds, with a pulse length of 1024 µsec. The transmitted power was 338 and 200W for 38 kHz and 120 kHz, respectively, for a range of 40m. The WBAT was hauled vertically between 0 to 500m at descent rate of 1m.s-1 during an average duration of 40 minutes at measurement stations. The WBAT was equipped with a CTD sensor to record the pressure.

 

This dataset presents fisheries acoustic data in both proprietary Simrad RAW format and international HAC format recorded on 19/09/2021 between 07:31 and 08:16 UTC.

 

Data
File Size Format Processing Access
Proprietary SIMRAD RAW format 100 MB Proprietary SIMRAD RAW format Raw data Open access
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