IN2017_V04 East Australian Current Bathymetry 10m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2017_V04 titled "The whole enchilada: from production to predation in Tasman Sea ecosystems". The voyage took place between August 31 and September 18, 2017, departing from Brisbane (QLD) and arriving in Sydney (NSW).\n\nThe purpose of this voyage was to determine, for a range of Tasman Sea water-masses, the size based ecosystem encompassing almost 6 orders of magnitude in size (from microns to ~30 cm).\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.\nLineage: Multibeam data was logged from the EM’s in Kongsberg’s proprietary *.all format and was converted to be processed within Caris HIPS and SIPS version 10.2.2 using the CARIS4 PC. Once the raw files were converted into the HIPS and SIPS format the data was analysed for noise. The lines were merged using the vessel file appropriate for either the EM122 or EM710. Total Propagated Uncertainty was computed for each line and CUBE surfaces were created to help identify areas of significant erroneous data. The data was then gridded at the highest resolution possible and further inspected for outliers. Final surfaces were computed using the Swath Angle algorithm.\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.