This resource includes bathymetry data acquired during the Refuge Cove bathymetry survey acquired by Deakin University Marine Mapping Lab during the period of 07 – 11 June 2013 onboard the MV Yolla using a Kongsberg Maritime EM2040C multibeam sonar. The Refuge Cove bathymetry survey was led by Dr. Daniel Ierodiaconou (Deakin University). This dataset contains a 1m-resolution 32-bit floating point GeoTIFF file of the bathymetry in the study area, derived from the processed EM2040C bathymetry data, using CARIS HIPS and SIPS software. The elevation datum is shifted to EGM2008 at Geoscience Australia. Detailed information on this survey is provided in: Ierodiaconou, D., Schimel, A. C., Kennedy, D., Monk, J., Gaylard, G., Young, M., Diesing, M. & Rattray, A. (2018). Combining pixel and object based image analysis of ultra-high resolution multibeam bathymetry and backscatter for habitat mapping in shallow marine waters. Marine Geophysical Research, 39(1), 271-288. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

The Southeast Tasmania and Southern Macquarie Ridge Bathymetry dataset was acquired by the Australian Geological Survey Organisation (AGSO) (Geoscience Australia predecessor) during the AUSTREA-2 marine survey undertaken from 15 January - 9 February 2000 onboard the French Oceanographic and Geoscience Research Vessel N/O L'Atalante using a Simrad EM12D multibeam sonar system. The survey was completed as part of the work to map the foot-of-slope position to support definition of Australia's legal Continental Shelf under the United Nations Convention on the Law of the Sea. This dataset contains 120m-, 160m-, 250m-, 280m-, 300m-, 360m- and 440m-resolution 32-bit floating point GeoTIFF files of the bathymetry in the survey area, derived from the processed EM12D bathymetry data, using CARIS HIPS and SIPS software. This dataset is not to be used for navigational purposes.

This resource includes bathymetry data acquired during the Vernon Islands bathymetry survey collected by University of Queensland during the period 21 – 26 May 2019 on the charter vessel Lauri-j using Bathyswath interferometric sonar system. The survey was undertaken as a project of the Australian Tidal Energy (AUSTEn; http://austen.org.au/) co-funded by the Australian Renewable Energy Agency (ARENA) for the Advancing Renewables Program. The purpose of the project was to map the country’s tidal energy resource in unprecedented detail and assess its economic feasibility and ability to contribute to Australia’s energy needs. It will aid the emerging tidal energy industry to develop commercial-scale tidal energy projects. This dataset contains a 4m resolution 32-bit floating point geotiff file of the bathymetry in study area and transits, derived from the processed Bathyswath interferometric data, using Fledermaus. A final report of the project is provided in: Penesis, I et al. 2020. Tidal Energy in Australia: Assessing Resource and Feasibility in Australia’s Future Energy Mix (https://tethys-engineering.pnnl.gov/sites/default/files/publications/tidal-energy-in-australia-2020.pdf). This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

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.

The Tasmante bathymetry survey, GA-0125 was acquired by Geoscience Australia onboard the IFREMER N/O L'Atalante from the 12th of February to the 28th of March 1994 using a Simrad EM12 Dual sonar system. The objectives of the west Tasmanian swath-mapping cruise (Tasmante) are to: determine the structure of the continental margin off west Tasmania, on the South Tasman Rise, and on the adjacent abyssal plain; examine the relationships between lithospheric extension in continental crust, the orientation of the seafloor spreading phases, and the formation of the transform margin along west Tasmania and the South Tasman Rise; map sedimentary patterns and processes to build an understanding of Neogene changes in sedimentation and their relationship to tectonic and climatic. This dataset contains a 100m resolution 32-bit geotiff of the Tasmante survey, produced from the processed EM12D bathymetry data of the survey area using the CARIS HIPS and SIPS software. This dataset is published with the permission of the CEO, Geoscience Australia. Not to be used for navigational purposes.

This is a compilation of all the processed bathymetric datasets held by Geoscience Australia for the Otway Basin, extending from Cape Jaffa in South Australia to north-west Tasmania. This dataset includes multibeam echosounder and LIDAR data, and was gridded at two resolutions (50 and 128 m) based on optimal resolution for the depth range encountered. The objective of this Otway Basin bathymetry dataset is to increase our understanding of the seafloor geomorphology of the region and provide a primary input dataset for the creation of numerous subsurface geophysical products. These include inputs to calibrated gravity and magnetic data to provide new insights to geological morphology and processes, inputs to 2D and 3D seismic processing for better subsurface imaging, inputs to velocity modelling for better time to depth conversions, and inputs to depth of burial 3D models to understand how sedimentary basins have evolved over geological time. This dataset is published with the permission of the CEO, Geoscience Australia. Not to be used for navigational purposes.

This resource includes bathymetry data acquired during the Northern Depths of the Great Barrier Reef survey on RV Falkor using its Kongsberg EM302 multibeam sonar system. The EM710 data acquired on this survey will be included in a future release. The primary objective of the survey was to explore the Cape York Peninsula region, through geophysical mapping of the shelf edge and continental slope adjacent to the barrier reefs and around the seven detached reefs lying north of Cape Weymouth, including within the large Wreck Bay. The offshore Cape York area is considered a frontier marine region with very little multibeam data collected previously in this far northern section of the Great Barrier Reef. The survey aimed to reveal the full inventory of submarine canyons, drowned reefs and any other significant seabed features in the region. A secondary objective was to conduct geophysical mapping of the Swain slide, an underwater landslide on the slope adjacent to the Swain Reefs in the southern Great Barrier Reef, with a headscarp about 10 km wide and a debris field extending ~20 km from the headscarp. The mapping aimed to reveal the full extent of the debris field and nature of the debris material proximal to the headscarp. Another objective was to conduct geophysical mapping around the steeper slopes around reefs in the eastern Coral Sea Marine Park, including the Saumarez, Frederick, Kenn, Wreck and Cato Reefs. The mapping aimed to fill data gaps between existing airborne LIDAR bathymetry over the shallow reefs and previously collected multibeam data around the steeper flanks. To achieve these objectives, the survey extended over 47 days, leaving Brisbane, Australia on September 30, 2020 and returning to Brisbane, Australia on November 17, 2020. The voyage was split into three legs, with port calls made at Cairns and Horn Island in the Torres Strait. Geophysical mapping involved the use of both Kongsberg EM302 and EM710 multibeam systems on the RV Falkor, typically operated in Dual Swath mode. In depths deeper than ~1200 m, the EM710 was turned off. Backscatter and water column data were also collected on both multibeam systems. This V1 dataset contains two 64m resolution 32-bit geotiff files of the FK200930 survey area produced from the processed EM302 only bathymetry data. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

This resource includes bathymetry data acquired during the Recherche Archipelago 2005 bathymetry survey collected using a Reson SeaBat 8125 multibeam sonar system by Curtin University of Technology (CUT) and Geoscience Australia (GA) on the charter vessel Firebird during the period 5th – 14th May, 2005. The survey was undertaken as a collaborative project between CUT and GA under the Coastal Water Habitat Mapping (CWHM) Project within Coastal Cooperative Research Centre Program. The purpose of the project was to build baseline information for benthic habitats within the study area. This V1 dataset contains a 2m resolution 32-bit floating point geotiff file of the Recherche Archipelago bathymetry, derived from the processed Reson SeaBat 8125 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.

<p>This is a recent compilation of all the processed multibeam bathymetric data that Geoscience Australia holds in its database for the Bremer and Denmark Sub-Basins. The location of the sub-basin lies in deep water off the southwest margin of WA between Broke and Esperance in Southern Western Australia. <p>This dataset is published with the permission of the CEO, Geoscience Australia. <p>Not to be used for navigational purposes.

The Mavis Reef bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the M/V Warrego during the period 08 January – 09 August 2021. This was a contracted survey conducted by Neptune Marine Services under the HydroScheme Industry Partnership Program (HIPP). The survey area is located east of Mavis Reef, at the southern extent of the Bonaparte Archipelago, offshore northwestern Australia. Bathymetry data were acquired using a R2Sonic 2024 multibeam sonar system and processed using QPS Qimera V2.0.1 and exported to GeoTIFF using CARIS HIPS and SIPS software. This dataset contains a 30m-resolution 32-bit floating point GeoTIFF file of the bathymetry in the survey area. This dataset is not to be used for navigational purposes.