<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>

Established in 2018, AusSeabed is a collaborative national seabed mapping initiative focused on delivering freely accessible seabed mapping data and coordinating efforts to map the gaps across the Australian maritime region of responsibility. AusSeabed is driven by a cross-sector steering committee bringing together organisations from the government, academia and private sectors to ensure an inclusive and diverse representation of the seabed mapping community. The Annual Highlights Report presents the key achievements of the AusSeabed program over the 2020/21 financial year. The report is structured in five sections, the first four are aligned to the 2020/21 work plan objectives and the fifth highlights engagement activities over the past year.

This resource includes bathymetry data for Arafura Marine Park (Arafura Sea) collected by Geoscience Australia (GA) and the Australian Institute of Marine Science during the period 2 – 15 November 2020 on the RV Solander. The survey was undertaken as a collaborative project funded through the National Environmental Science Program Marine Biodiversity Hub, with co-investment by GA and AIMS. The purpose of the project was to build baseline information for benthic habitats in Arafura Marine Park that will support ongoing environmental monitoring within the North Marine Park Network as part of the 10-year management plan (2018-2028). Data acquisition for the project included multibeam bathymetry and backscatter for two areas (Money Shoal and Pillar Bank), seabed samples and underwater imagery of benthic communities and demersal fish. This bathymetry dataset contains a 6 m resolution 32-bit geotiff of the survey areas produced from the processed EM2040C Dual Head system using CARIS HIPS and SIPS software. A detailed report on the survey is provided in: Picard, K. Stowar, M., Roberts, N., Siwabessy, J., Abdul Wahab, M.A., Galaiduk, R., Miller, K., Nichol, S. 2021. Arafura Marine Park Post Survey Report. Report to the National Environmental Science Program, Marine Biodiversity Hub.

This resource includes bathymetry data acquired during the Southern Gulf of Carpentaria bathymetry survey using Simrad EM300 and Reson Seabat 8101 multibeam sonar systems. Southern Gulf of Carpentaria bathymetry survey (GA0276) was led by Dr. Peter Harris (Geoscience Australia) aboard the Marine National Facility's research vessel Southern Surveyor, from the 23rd of March to the 13th of April 2005. The primary objective of the expedition was to map submerged reefs to ascertain their geomorphic nature and document the benthic communities and fauna. This dataset contains four 4m to 7m resolution 32-bit floating point geotiff files of the bathymetry in five study areas and transits, derived from the processed EM300 and Reson 8101 bathymetry data, using CARIS HIPS and SIPS software. A detailed report on the survey is provided in: Harris, P et al. 2006. Submerged coral reefs and benthic habitats of the southern Gulf of Carpentaria: Post-Survey Report - GA Survey 276, RV Southern Surveyor (https://pid.geoscience.gov.au/dataset/ga/65073). This dataset is not to be used for navigational purposes. This dataset is published with the permission of the CEO, Geoscience Australia.

The Banks Strait bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the M/V Offshore Solution and SMB Indigo during the period 20 January – 17 July 2021. The survey was contracted as part of the HydroScheme Industry Partnership Program (HIPP). The survey area encompasses Banks Strait located between the Northern Tasmanian coast and the Furneaux Group (including Cape Barren, Clarke and Flinders Islands). Bathymetry data was acquired using a Kongsberg EM2040-04 MKII and EM 2040P multibeam sonar and processed using QPS Qimera V2.0.1. The dataset was then exported to GeoTIFF using CARIS HIPS and SIPS software. This dataset contains a 30m-resolution 32-bit floating point GeoTIFF file. This dataset is not to be used for navigational purposes.

The Darwin Harbour bathymetry survey, GA-0333 was acquired by Geoscience Australia (GA), iXSurvey Australia Pty Ltd, and the Darwin Port Corporation (DPC) onboard the vessel 'Matthew Flinders' from 17 October to 07 November 2010 using GA's Kongsberg EM3002D multibeam sonar system and DPC's The specific objectives of the survey were to: 1. Obtain high resolution geophysical (bathymetry) data for Darwin Harbour; 2. Characterise substrates (acoustic backscatter properties, grainsize, sediment chemistry) for Darwin Harbour; and 3. Collect tidal data for the survey area. This V0 dataset contains a 1m resolution 32-bit geotiff of the Darwin Harbour survey area produced from the processed EM3002D sonar bathymetry data. This dataset is published with the permission of the CEO, Geoscience Australia Not to be used for navigational purposes.

<b>This record was superseded on 11/11/2022 with approval from Director, National Seabed Mapping as it has been superseded by eCat 147191</b> Seabed mapping data collected using a Kongsberg 2040C multibeam sonar system aboard research vessel MVYolla including bathymetry (2 metre resolution), backscatter (1metre resolution), watercolumn and preliminary hard bottom classification. Seabed mapping in Apollo Marine Park with 114 square kilometres of continuous seabed mapping conducted by Deakin University in partnership with iXblue for Parks Australia.

The GMRT-AusSeabed project aims to address the cost associated with processing, merging and reformatting of bathymetric data in marine modelling and management. This will be achieved by adopting and expanding the Global Multi-Resolution Topography Synthesis (GMRT) tool and becoming a local platform node focused on Australia’s region of marine responsibility. The GMRT is operated by Lamont Doherty Earth Observatory and funded by the US National Science Foundation. The implementation of GMRT for Australia is supported by funding from the Australian Research Data Commons (ARDC). One of the main deliverables for the project is a user needs analysis, which will inform the design of the platform. This report presents a summary of the outcomes of the engagement with the ocean and coastal modelling community to ensure the solutions are fit-for-purpose. The initial project plan included a proposal for in-person workshop with the modelling community to establish user requirements, however COVID-19 restrictions were in place during the project and this was not possible. Instead, requirements were gathered from the community via an online survey. An overview of the survey questions and responses is presented in Section 2, while Section 3 provides some further analysis of the results and recommendations for the design of the new platform.

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 resource includes bathymetry data acquired during the Recherche Archipelago 2003 bathymetry survey collected using a Reson SeaBat 8125 multibeam sonar system by Curtin University of Technology (CUT) on the charter vessel Firebird during the period 29th October – 6th November 2003. The survey was undertaken as a collaborative project between CUT and the University of Western Australia (UWA) 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.