RV Investigator Voyage IN2023_V01 EM122 Multibeam Echosounder Data

• Other Authors: CSIRO (hasAssociationWith), CSIRO O&A, Information & Data Centre (pointOfContact), CSIRO Oceans & Atmosphere - Hobart (hasAssociationWith), GSM Support (pointOfContact), Navidad, Cisco (originator), Navidad, Cisco (processor)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; geoscientificInformation; Ship: Investigator (RV); Marine National Facility; Research Voyage: IN2023_V01; Earth Science | Oceans | Bathymetry/Seafloor Topography; Global / Oceans | Southern Ocean; States; Territories (Australia) | Tasmania; Named Locations (Antarctica) | East Antarctica; Coastal Cities / Towns (Australia) | Albany; WA; Coastal Cities / Towns (Australia) | Fremantle; Multibeam Echosounder - EM122; Sea-floor depth below surface of the water body; Sea-floor surface hardness; Density of the water body; research vessel; multi-beam echosounders; Antarc*; Antarctic; Antarctica; East Antarctica; Southern Ocean
• Online Access: https://researchdata.edu.au/rv-investigator-voyage-echosounder-data/2373105

Maintenance and Update Frequency: asNeeded Statement: Original field data. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position and edited using CARIS version 11.4.2 Credit "Data collected on the Marine National Facility (MNF) RV Investigator voyage IN2023_V01.","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 multibeam echosounder data collected on RV Investigator voyage IN2023_V01, titled "Antarctic Bottom Water Production in the past: Records from marine sediments, Cape Darnley, East Antarctica". The voyage took place between 25th January, 2023 and 2nd March, 2023 departing from Henderson's (WA) and arriving in Hobart (TAS). The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter between Fremantle to Antarctica and Albany to Hobart. The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz. Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 1,395 files totalling 60 GB of raw data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. Bathymetry data contained in *.all format are corrected for motion and position. GPS tide was computed using the EGM2008 model and applied to the processed data. Processed data had ...