IN2015_T01 Hobart to Sydney Transit Bathymetry 10m - 210m Multi-resolution AusSeabed products

Brief description

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2015_T01, titled "Transit, Hobart - Sydney". The voyage took place between May 10 and May 13, 2015 departing from Hobart (TAS) and arriving in Sydney (NSW).

This voyage was a three-day transit from Hobart to Sydney. There were no science personnel onboard, however some opportunistic bathymetric survey was undertaken.

This dataset is published with the permission of CSIRO. Not to be used for navigational purposes.

The dataset contains bathymetry grids of 10m to 210m resolution of the transit Hobart to Sydney, produced from the processed EM122 and EM710 bathymetry data.
Lineage: Data processing for the EM122 and EM710 data was performed using CARIS 8.1.8. Data from both systems were imported into a single CARIS project using different vessel files, Investigator_EM122 and Investigator_EM710. A zero tide file was applied to the data before merging. All lines were swath edited and then gridded at 20 or 30m using Swath Angle determination.

The 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.