RV Investigator Voyage IN2023_E03 EK60/EK80 Echosounder

• Other Authors: CSIRO (hasAssociationWith), CSIRO O&A, Information & Data Centre (pointOfContact), CSIRO Oceans & Atmosphere - Hobart (hasAssociationWith), GSM Data Request (custodian), GSM Support (pointOfContact), Vandenbossche, Phil (originator), Vandenbossche, Phil (processor)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; Ship: Investigator (RV); Marine National Facility; Gear Trials: IN2023_E03; Earth Science | Oceans | Ocean Acoustics; Coastal Waters (Australia) | Tasmania Coast; TAS; Coastal Waters (Australia); Coastal Waters (Australia) | Tasmania Coast East and Southeast; Global / Oceans | Southern Ocean; Coastal Waters (Australia) | Victoria Coast; VIC; Marine Features (Australia) | Derwent Estuary; Coastal Waters (Australia) | New South Wales Coast; NSW; Regional Seas | Tasman Sea; Fisheries echosounder EK60; Fisheries echosounder - EK80; Abundance of biota; Biovolume; Sea-floor depth below surface of the water body; research vessel; Fish-finder echosounders; Southern Ocean
• Online Access: https://researchdata.edu.au/rv-investigator-voyage-ek60ek80-echosounder/2959522

Maintenance and Update Frequency: asNeeded Statement: Original field data. Credit Data collected on the Marine National Facility (MNF) RV Investigator voyage IN2023_E03. The MNF must be acknowledged in all outputs derived from Data and/or Samples collected by, or with support from, the MNF. Acknowledge the MNF in outputs with the statement: “We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” Acknowledgment and citations should be in all forms of publication including presentations (where the acknowledgement should be on the closing slide), journals, books, reports and related research outputs. This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2023_E03, titled "Trials & Calibrations", which was segmented into 3 legs, departing Hobart on September 13 and ending in Sydney on September 30, 2023. Leg 1 (Hobart to Hobart) took place between 13-16 Sep, Leg 2 (Hobart to Hobart) between 16-25 Sep and Leg 3 (Hobart to Sydney) between 26-30 Sep. The Simrad EK80 wide band transceivers (WBT) 38, 70, 120, 200 kHz and the EK60 split-beam GPT 18 kHz were calibrated during Leg 2 of the voyage. The calibration was undertaken at anchor in the Derwent Estuary on September 18, 2023 with the 38mm sphere deployed at 03:00 (UTC) and calibration recording conducted between 07:14 - 10:06 (UTC). The EK80 WBTs were calibrated using default settings for only CW modes. Due to line snagging issues under the hull and resulting time limitations, no calibration was undertaken for the 333 kHz or for the remaining EK60 GPTs. The results of the calibration were not applied immediately to the EK80 (pending further onshore analysis). All frequencies were logged sporadically for the extent of the voyage. The frequencies were set to passive for periods during the voyage when conducting other system calibrations or during shallow water mapping when interference was noted on the mapping system (EM710) from the 70 and 120kHz ...