IN2019_V05 East Australian Current IMOS Bathymetry 10m - 210m Multi-resolution AusSeabed products

Full description

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2019_V05 titled "Integrated Marine Observing System: monitoring of East Australian Current property transports at 27 degrees South". The voyage took place between September 09 and September 29, 2019, departing from Brisbane (QLD) and arriving in Brisbane (QLD).

The purpose of this voyage was to recover and re-deploy 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°S).

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 Queensland coast and East Australian Current produced from the processed EM122 and EM710 bathymetry data.
Lineage: 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 10.3.1. The raw files were converted into the HIPS and SIPS format the data was analysed for noise. No tide was applied, and the lines were merged using the vessel file appropriate for either the EM122 or EM710. The data was then gridded at the highest resolution possible and further inspected for outliers. In addition, a Virtual Resolution (VR) surface was created that combined both multibeam datasets.

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.