<div>The Abbot Point to Hydrographers Passage bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the RV Escape during the period 6 Oct 2020 – 16 Mar 2021. This was a contracted survey conducted for the Australian Hydrographic Office by iXblue Pty Ltd as part of the Hydroscheme Industry Partnership Program. The survey area encompases a section of Two-Way Route from Abbot Point through Hydrographers Passage QLD. Bathymetry data was acquired using a Kongsberg EM 2040, and processed using QPS QINSy. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

The Solitary Islands Gumbaynggirr Yaegl MP bathymetry survey was acquired by the NSW government (Department of Planning and Environment – DPE) onboard the RV Bombora during the period 31 Aug 2022 – 31 Jul 2023, using DPE’s R2Sonic 2022 multibeam sonar. The survey was completed as part of the SeabedNSW program funded by NSW government through Coastal Reforms (>2015), HabMap Program funded through Marine Parks Authority (now under Marine Estate Management Authority) or through collaborations with partner agencies or institutions. The purpose of the project was to 1) provide a baseline dataset and 2) map the spatial distribution of seabed types. This dataset contains 32-bit floating point geotiff files of bathymetry and backscatter in 5m resolution for the study area, derived from the processed Hypack, R2Sonic GUI, POSView, POSPac, Qimera and FMGT software. General details on vessel setup, mobilisation and processing are provided at https://www.environment.nsw.gov.au/-/media/OEH/Corporate-Site/Documents/Research/Our-science-and-research/seabed-nsw-standard-operating-procedures-multibeam-surveying-190101.pdf with survey specific details in the Survey Report and DPIE Rigor Statement (can be provided upon request). This dataset is not to be used for navigational purposes.

The Wallaby-Zenith Fracture Zone Survey was acquired by the Minderoo-UWA Deep-Sea Research Centre at the University of Western Australia during the expedition “Indomitable” onboard the RV DSSV Pressure Drop from the 8th March to the 2nd June 2021 led by Dr. Alan Jamieson, using a Kongsberg EM124. The expedition was funded by a joint mission between Caladan Oceanic LLC (US) and the Minderoo Foundation (Australia). This dataset contains a 64m-resolution and a 128mm-resolution 32-bit floating point GeoTIFF files of the bathymetry in the study area, derived from the processed EM124 bathymetry data, using QPS Qimera v.2.5 software. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

<div>The Ashmore Reef and Cartier Island Marine Parks&nbsp;Bathymetry was derived by EOMAP form multispectral satellite data from WorldView-3 satellite sensor. This was acquired by the Australian Government as part of the Marine Parks Grant - Round 3, in 2022-2023 and undertaken by EOMAP Australia Pty Ltd and EOMAP GmbH & Co.KG. The survey area encompasses the Ashmore Reef and Cartier Island Marine Parks in Western Australia. These critical geospatial data layers provide the essential environmental baseline information for the long-term monitoring and management of these Marine Parks. Mapping the shallow water zone is of importance both from an environmental and socioeconomic perspective. Having access to digital, georeferenced, high-resolution maps of bathymetry and benthic habitats of shallow water areas, is of fundamental use in the areas of navigation, ecological research, environmental modelling, management and conservation, and monitoring the impacts from climate change. Bathymetry data was processed using the physics-based inversion method to derive quantitative information of the shallow water bathymetry using the reflected sunlight energy in different wavelengths of the visible and near infrared region. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.</div>

<div>The Van Diemen Gulf (North-West Inshore Route) bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Offshore Guardian and the MV Speical Order during the period 26 Jun 2021 – 5 Oct 2021. This was a contracted survey conducted for the Australian Hydrographic Office by Guardian Geomatics as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Van Diemen Gulf (North-West Inshore Route), NT. Bathymetry data was acquired using a Kongsberg EM2040-07 MKII, and processed using CARIS HIPS and SIPS processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Cape Leeuwin bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Mermaid Searcher during the period 5 Dec 2022 – 4 Apr 2023. This was a contracted survey conducted for the Australian Hydrographic Office by MMA Offshore as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Cape Leeuwin, WA. Bathymetry data was acquired using a Kongsberg EM2040P, and processed using CARIS HIPS and SIPS processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The North Wollongong, Bellambi Pont to Stanwell Park, NSW bathymetry survey was acquired by the NSW government (Department of Planning and Environment – DPE) onboard the RV Bombora during the period 13 Aug 2017 – 4 Mar 2022, using DPE’s R2Sonic 2022 multibeam sonar. The survey was completed as part of the SeabedNSW program funded by NSW government through Coastal Reforms (>2015), HabMap Program funded through Marine Parks Authority (now under Marine Estate Management Authority) or through collaborations with partner agencies or institutions. The purpose of the project was to 1) provide a baseline dataset and 2) map the spatial distribution of seabed types. This dataset contains 32-bit floating point geotiff files of bathymetry and backscatter in 5m resolution for the study area, derived from the processed Hypack, R2Sonic GUI, POSView, POSPac, Qimera and FMGT software. General details on vessel setup, mobilisation and processing are provided at https://www.environment.nsw.gov.au/-/media/OEH/Corporate-Site/Documents/Research/Our-science-and-research/seabed-nsw-standard-operating-procedures-multibeam-surveying-190101.pdf with survey specific details in the Survey Report and DPIE Rigor Statement (can be provided upon request).</div><div>This dataset is not to be used for navigational purposes.</div>

This data set provides outlines for the maximum spatial extent of seabed geomorphic units for Australia's Exclusive Economic Zone, including the offshore island territories, but excluding Australian Antarctic Territory. Twenty-one geomorphic feature types were identified and mapped, following definitions published by the International Hydrographic Office (IHO, 2001). <b>Value: </b>The geomorphology of the seabed is used to constrained surface geology of the sea floor, important in resource exploration, marine zone management and for understanding the physical environment <b>Scope: </b>The area covered includes the seafloor within the Australian marine jurisdiction surrounding the Australian mainland and island territories of Christmas, Cocos (Keeling), Macquarie, and Norfolk Islands (Heap & Harris 2008).

<div>The Shark Bay Bathymetry was derived form a time series of multispectral satellite data from the Copernicus Sentinel-2 satellite sensor, acquired between January 2017 and December 2020. This dataset was produced by the University of Western Australia to support student research projects. The dataset encompasses the Shark Bay in Western Australia. These critical geospatial data layers provide the essential environmental baseline information for the long-term monitoring and management. Mapping the shallow water zone is of importance both from an environmental and socioeconomic perspective. Bathymetry data was processed following the workflow of Lebrec et al. (2021) [https://doi.org/10.5194/essd-13-5191-2021]. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.</div>

<div>The South-west Corner and Perth Canyon Marine Parks Bathymetry Acquisition was acquired by the&nbsp;Minderoo-UWA Deep-Sea Research Centre of the University of Western Australia on-board the MV Pangaea Ocean Explorer&nbsp;from the 24th of March to the 05th of April 2022, using a Kongsberg EM304 multibeam sonar. </div><div>The survey was led by Dr. Todd Bond and the collected data were processed by Dr. Yakup Niyazi.</div><div>This dataset contains a 64m-resolution and four 128m-resolution 32-bit floating point GeoTIFF files of the bathymetry in the study area, derived from the processed EM304 bathymetry data, using QPS Qimera v.2.5 software. This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.</div>