This resource includes bathymetry data acquired during the Tasman and Coral Seas survey using Kongsberg EM302 and EM710 multibeam sonar systems. The Tasman and Coral Seas bathymetry survey (FK201228/GA4868); also known as Pinging in the New Year: Mapping the Tasman and Coral Seas survey; was led by James Cook University and University of Queensland aboard the Schmidt Ocean Institute's research vessel Falkor from the 28th of December to the 25th of January 2021. The primary objective of the expedition was to map the seabed of the target area in the Tasman and Coral Seas that will support ocean research, management and sustainable economic development. Bathymetric maps are especially valuable for geoscience research, as the shape of the seafloor holds information about the tectonic movement and the formation of the Australian continent. Another objective was to survey seabirds, which are important indicators of ocean health and the data collected from the expedition are vital for informing management of the Coral Sea Marine Park. This V1 dataset contains one 64m resolution 32-bit floating point geotiff files of the Tasman and Coral Seas bathymetry survey area, derived from the processed EM302 and EM710 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 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.

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 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 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.

This resource includes bathymetry data for Elizabeth and Middleton Reef within Lord Howe Marine Park collected by Geoscience Australia during the period 31 January to 6 February 2020 on the Australian Maritime College vessel, TV Bluefin. The survey was undertaken as a collaborative project funded through the National Environmental Science Program Marine Biodiversity Hub, with the Institute for Marine & Antarctic Studies (University of Tasmania), NSW Department of Primary Industries, University of Sydney (Centre for Field Robotics) and Parks Australia. The purpose of the survey was to collect baseline information for benthic habitats within the National Park Zone (Middleton Reef) and Recreational Use Zone (Elizabeth Reef) of the marine park. These data will support ongoing environmental monitoring within the Temperate East Marine Park Network as part of the 10-year management plan (2018-2028). Data acquisition for the project included seabed mapping using multibeam sonar (Kongsberg EM 2040C HD, 300 kHz), seabed imagery acquisition by Autonomous Underwater Vehicle (AUV Sirius), sediment samples (grab) and imagery of demersal fish communities by baited remote underwater video (BRUV). This dataset comprises two bathymetry grids derived from multibeam sonar data gridded at 5 m spatial resolution, covering a combined area of 312 km2 including the transit. A detailed report on the survey is provided in: Carroll, A et al. 2020. Australian Marine Park Baseline and Monitoring Survey: Post Survey Report, Middleton and Elizabeth Reefs, Lord Howe Marine Park. Report to the National Environmental Science Program, Marine Biodiversity Hub. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia

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.

This resource contains multibeam bathymetry data collected as part of the Darwin and Bynoe Harbour Habitat Mapping Project undertaken by Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Northern Territory Government (Department of Environment and Natural Resources). The data were acquired during the period from 3 to 27 May 2016 on the RV Solander (survey SOL6432/GA04452). This project was made possible through offset funds provided by INPEX-led Ichthys LNG Project to Northern Territory Government Department of Environment and Natural Resources, and co-investment from Geoscience Australia and Australian Institute of Marine Science. The intent of this four year (2014-2018) project is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps that underpin marine resource management decisions. The specific objectives of the survey were to: 1. Obtain high-resolution geophysical (multibeam bathymetry) data for Bynoe Harbour; 2. Characterise seabed substrates (multibeam acoustic backscatter properties, seabed sediment grainsize, sediment chemistry) for Bynoe Harbour; and 3. Collect tidal data for the survey area. Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; physical samples of seabed sediments, seabed still images and video footage of grab sample locations, and oceanographic information including tidal data and water column sound velocity profiles. This V1 dataset contains two 2m resolution 32-bit geotiff of the SOL6432 survey area produced from the processed Kongsberg EM2040C bathymetry data. A detailed account of the survey is provided in: Siwabessy, P.J.W., Smit, N., Atkinson, I., Dando, N., Harries, S., Howard, F.J.F., Li, J., Nicholas W.A., Picard, K., Radke, L.C., Tran, M., Williams, D. and Whiteway, T. 2016. Bynoe Harbour Marine Survey 2016: GA4452/SOL6432 – Post-survey report. Record 2017/04. Geoscience Australia, Canberra. http://dx.doi.org/10.11636/Record.2017.004. 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 Kenn and Chesterfield Plateaux survey using Kongsberg EM302 and EM710 multibeam sonar systems. The Kenn and Chesterfield Plateaux bathymetry survey (FK210206/GA4869); also known as Seafloor to Seabirds of the Coral Sea survey; was led by the University of Queensland aboard the Schmidt Ocean Institute's research vessel Falkor from the 06th of February to the 05th of March 2021. The primary objective of the expedition was to map underwater landscapes in the Coral Sea, collect marine magnetic data and sample micro plastics from the ocean using the Falkor's underwater system and CTD casts. Another objective was to survey seabirds species and their concentration in space and time, which are important indicators of ocean health. The data collected from the expedition will help inform future management of the Coral Sea Marine Park and the data will be added to the Nippon Foundation -GEBCO Seabed 2030 Project. This V1 dataset contains one 64m resolution 32-bit floating point geotiff files of the new Kenn and Chesterfield Plateaux bathymetry, derived from the processed EM302 and EM710 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 HMAS Canberra bathymetry survey (GA-4880). Data was acquired by Deakin University on the 3rd of November 2020 onboard the M/V Yolla using a Kongsberg EM2040c sonar system. The objective of this survey was to map the HMAS Canberra wreck. The HMAS Canberra wreck is in Bass Strait between Port Lonsdale and Barwon Heads, Victoria, Australia. This dataset contains a 0.5 m resolution 32-bit geotiff of the HMAS Canberra shipwreck survey area produced from the processed EM2040c bathymetry data of the survey area 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.