IN2022_V06 East Australian Current IMOS Bathymetry 10m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2022_V06 titled "Integrated Marine Operating System: (IMOS) monitoring of East Australian Current property transports at 27°S". The voyage took place between July 14 and July 30, 2022, departing from Brisbane (QLD) and arriving in Brisbane (QLD).\n\nThe purpose of the voyage was to recover an array of six full-depth current meter and property (temperature, salinity and pressure) moorings from the continental slope to the abyssal waters off Brisbane (27 degrees South).\n\nThis dataset is published with the permission of CSIRO. Not to be used for navigational purposes.\n\nThe dataset contains bathymetry grids of 10m to 210m resolution of the East Australian Current, produced from the processed EM122 and EM710 bathymetry data.\n\nLineage: Multibeam data was logged from the EMs in Kongsberg’s proprietary *.all format and was converted to and processed with CARIS HIPS and SIPS versions 11.4.11 & 11.4.13. Data were imported into the HIPS project using EM Height and the vessel file appropriate for either the EM122 or EM710. GPS tide was computed using the EGM2008 model. TPU values were computed using Measured Sound Velocity = 0.3 and Surface Sound Velocity = 0.2. The raw files were analysed for noise and cleaned manually using swath editor.\n\nThe data was then gridded at multiple resolutions in python Caris batch script using a Depth filter Vs Resolution guideline derived from AusSeabed Multibeam guidelines v2 and further inspected for outliers. Final raster products are available in L3 folder of this collection. Final processed data were also exported per line as GSF and ASCII format and available in the L2 folder of this collection.