| Summary: | Maintenance and Update Frequency: asNeeded Statement: DATA COLLECTION: Vessels collect 38 kHz acoustic data from either Simrad EK60, ES60 (split beam) or ES70 echosounders. Research vessel RV Southern Surveyor collects concurrent acoustic data at 12 and 120 kHz. The research vessel Aurora Australis collects concurrent acoustic data at 12, 120 and 200 kHz. DATA POST PROCESSING: The three key steps are (1) semi-automated quality control procedures to filter bad data where we also record the percentage of data removed as a metric of data quality, (2) echo integration of the quality controlled data into cells of 1000 m length by 10 m height and (3) packaging echo integrated data into netCDF along with full metadata record. Credit Integrated Marine Observing System (IMOS). IMOS is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy (NCRIS) and the Super Science Initiative (SSI), CSIRO Marine and Atmospheric Research (CMAR). BA-SOOP Acoustic Transit data collected on the RV Southern Surveyor (granted by the Marine National Facility) was processed by CSIRO Oceans and Atmosphere Flagship as part of the IMOS BA-SOOP Program. Credit Rudy Kloser Credit Ryan Downie The IMOS Bio-Acoustic Ship Of Opportunity (BA-SOOP) sub-facility is part of a major international effort that aims to determine the distribution and abundance of mid-trophic level organisms (meso-zooplanktonic and micro-nektonic) preyed by top predators (sharks, tuna) by using commercial fishing vessels (SOOP), research vessels, automated oceanic moorings, acoustic recorders, drifters and gliders. The MAAS (Mid-trophic Automatic Acoustic Sampler) project targets two levels of technology: a high level suited to large platforms such as fixed moorings, vessels or AUV and low level platforms adapted to a large number of autonomous drifters. BA-SOOP commenced on the 1st of July 2010 to collect underway acoustic data from commercial fishing and research vessels. At present, nine vessels are participating ...
|
|---|