This resource includes bathymetry data acquired during the Shellharbour Tharawal marine survey collected by the NSW government (Department of Planning and Environment – DPE) during the period 25 May – 30 November 2017 onboard the RV Bombora using DPE’s R2Sonic 2022 multibeam sonar. The Shellharbour bathymetry survey was led by Dr. Bradley Morris (DPE Coasts and Marine) as part of SeabedNSW program funded by NSW Coastal Reforms package. The purpose of the project was to 1) provide a baseline dataset and 2) map the spatial distribution of seabed types. The data will provide a better understanding of nearshore sediment distribution/transport mechanisms for improved assessment of threats/risks associated with erosion events (i.e. East Coast Lows) and changing sea levels. This dataset contains a 32-bit floating point geotiff file of backscatter (5m gridded) for the study area, derived from the processed R2Sonic 2022 multibeam data, using Hypack, R2Sonic GUI, POSView, POSPac, Qimera and FMGT software. A detailed report on the survey is provided in: i) AusSeabed Survey Report and ii) NSW DPE Scientific Rigor Statement NSWENV_20171130_Shellharbour_MB_ScientificRigour.pdf. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the Senior Team Leader and the department’s Hydrosurveyor, Coasts and Marine Science, NSW Dept. Planning and Environment.

This flythrough highlights canyon environments within the Gascoyne Marine Park offshore northwestern Australia. The Cape Range Canyon is a relatively narrow, linear canyon that initiates on the continental slope, but is connected to the shelf via a narrow channel. The walls of the canyon are steep and reveal a history of slumping and retrogressive failure, that have broadened the canyon over time. The floor contains a series of deep plunge pools, indicative of the action of sediment-laden turbidity currents in further eroding this canyon. Epibenthos within the canyons was relatively sparse and likely regulated by disturbance associated with sedimentation in the canyons. Rock overhangs often supported the highest densities of benthic suspension feeders, including glass sponges, octocorals, and ascidians. Bathymetry data and seafloor imagery for this flythrough was collected by the Schmidt Ocean Institute during survey FK200308. Funding was provided by Schmidt Ocean Institute, Geoscience Australia, the Australian Government’s National Environmental Science Program (NESP) Marine Biodiversity Hub, the Director of National Parks, and the Foundation for the WA Museum through a Woodside Marine Biodiversity Grant.

The Peterborough to Port Fairy bathymetry survey was acquired by Deakin University Marine Mapping lab onboard the M/V Yolla during the period 28 May 2018 - 19 June 2018 using a Kongsberg EM2040C multibeam sonar system. The survey was completed as part of the Victorian Coastal Monitoring Program, which requires bathymetry data to understand offshore sediment dynamics within Victorian coastal waters. This dataset contains a 2m-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. This dataset is not to be used for navigational purposes.

<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 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.

The RS9401 bathymetry survey, GA0124 was acquired by Geoscience Australia onboard the Australian vessel Rig Seismic from the 12th of January to the 16th of February 1994 using an MR1 (12 kHz) towed sidescan sonar system. The objectives of the RS9401 bathymetry survey was to collect new data in order to update our understanding of the Macquarie Ridge Complex (MRC), located at the boundary between the Pacific and Australian plates. The survey acquired Sidescan/ bathymetry, gravity and 96- channel seismic reflection imaging across the morphologic ridge and trench system. Gravity and magnetic data were collected during the entire survey. This V0 dataset contains three, 128 m resolution 32-bit geotiff of the Macquarie Ridge survey area produced from the processed MR1 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 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.

This resource includes bathymetry data acquired during the Shellharbour Tharawal marine survey collected by the NSW government (Department of Planning and Environment – DPE) during the period 25 May – 30 November 2017 onboard the RV Bombora using DPE’s R2Sonic 2022 multibeam sonar. The Shellharbour bathymetry survey was led by Dr. Bradley Morris (DPE Coasts and Marine) as part of SeabedNSW program funded by NSW Coastal Reforms package. The purpose of the project was to 1) provide a baseline dataset and 2) map the spatial distribution of seabed types. The data will provide a better understanding of nearshore sediment distribution/transport mechanisms for improved assessment of threats/risks associated with erosion events (i.e. East Coast Lows) and changing sea levels. This dataset contains 2 x 32-bit floating point geotiff files of bathymetry (2m and 5m gridded) for the study area, derived from the processed Hypack, R2Sonic GUI, POSView, POSPac and Qimera software. A detailed report on the survey is provided in: i) AusSeabed Survey Report and ii) NSW DPE Scientific Rigor Statement NSWENV_20171130_Shellharbour_MB_ScientificRigour.pdf. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the Senior Team Leader and the department’s Hydrosurveyor, Coasts and Marine Science, NSW Dept. Planning and Environment.