IN2015_E06 South-Eastern Tasmania Bathymetry 10m - 210m Multi-resolution AusSeabed products

Brief description

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2015_E06 titled "Sea trials". The voyage consisted of three legs, 5-8 Oct 2015, 9-11 Oct 2015 and 12-16 Oct 2015 all departing Hobart (TAS) and arriving in Hobart (TAS).

The purpose of this sea trial was to test and calibrate various instruments. This included patch test calibrations for the EM122 and EM710, gravity meter tests, interference tests for the EK60 and backscatter calibration lines for the EM122 and EM710.

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 South-Eastern Tasmania, 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 subset edited.

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.