Transit Sydney to Albany bathymetry (FK200110/GA4864)

Brief description

This resource includes bathymetry data acquired during a transit from Sydney to Albany using a Kongsberg EM302 multibeam sonar system. The transit (FK200110/GA4864) was undertaken by the Schmidt Ocean Institute, using research vessel Falkor, from the 10th of January to the 18th of January 2020. The primary objective of the transit was to reach the Bremer Canyon survey area. This V1 dataset contains three 16m to 64m resolution 32-bit floating point geotiff files of the bathymetry data collected on the transit, derived from the processed EM302 bathymetry data, using CARIS HIPS and SIPS software. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

Lineage

Maintenance and Update Frequency: asNeeded

Statement: While AusSeabed aims to publish data to the level of adherence based on the requirements stated in the AusSeabed multibeam guidelines (version 1), we will also publish interim products (version 0) that are currently available, but have not yet been standardised (version 1). Users should be aware that V1 products will always supersede V0 products. This dataset was produced using CARIS HIPS/SIPS v.11.3.19 and AusSeabed processing methodology as follows. 1. A new Caris project was created in conjuction with existing or newly created vessel configuration file(s). 2. The raw swath sonar data files were imported to the project. GGK is preferred navigation and ellipsoid height sources. 3. The posmv data files were imported to the project to bring in delayed heave, delayed heave RMS, ellipsoid height and ellipsoid height RMS. 4. TPU and GPS tide were computed and all data were georeferenced (merged) to EGM2008 vertical datum. 5. An auto-resolution CUBE was generated as a reference surface for data cleaning. 6. An automated data cleaning using surface cleaning method with the reference surface was undertaken. 7. Further manual cleaning was conducted as required after visual assessment. 8. The final grids were produced according to their resolution rounded to the nearest AusSeabed banded depth resolution after the auto-resolution estimate Caris provided. 9. The final processed grids were exported as three 32 bit floating point Geotifs at 16m to 64m resolution referenced to egm2008.

Notes

Purpose
bathymetry transit