IN2019_V03 Indian Ocean Bathymetry 10m - 210m Multi-Resolution AusSeabed products

Full description

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2019_V03, titled: "A coupled bio-physical, ecosystem-scale, examination of Australia’s International Indian Ocean Expedition line". The voyage took place between May 14 and June 14, 2019 departing from Fremantle (WA) and arriving in Fremantle (WA).

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 Indian Ocean produced from the processed EM122 and EM710 bathymetry data.




Lineage: Multibeam data was logged from the EMs in Kongsberg’s proprietary *.all format and was converted to be processed within CARIS HIPS and SIPS version 10.3.1. Initial data conversion and processing was performed using the python batch utility. As soon as files were copied to the processing PC from the SIS acquisition machine, the data were automatically converted to the HIPS data format and merged using zero tide and the vessel file appropriate for either the EM122 or EM710.

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.