Authors / CoAuthors
Smith, J. | Leplastrier, A. | Arnold, D.
Abstract
The map and underlying digital dataset provide national and regional-scale context for a wider variety of applications, including offshore industries, area-based environmental management, scientific research and public education. Australia’s Seabed Map is based on the revised AusBathyTopo 250m (Australia) 2023 grid (Beaman, 2023), the most comprehensive, continental-scale compilation of bathymetry data in the Australian region. The map extends across a vast area from 92°E to 172° E and 8°S to 60° S. This includes areas adjacent to the Australian continent and Tasmania, and surrounding Macquarie Island and the Australian Territories of Norfolk Island, Christmas Island, and Cocos (Keeling) Islands. Australia's marine jurisdiction offshore from the territory of Heard and McDonald Islands and the Australian Antarctic Territory are not included. The new map provides a complete three-dimensional picture of the seafloor and is a significant improvement since it was last revised in 2009. In particular, the map incorporates new innovations such as the use of earth observation data (satellite based) produced by Digital Earth Australia to improve coastline definition and present a seamless transition between land and sea. The data is compiled from 1582 individual surveys using multibeam echosounders, single-beam echosounders, LiDAR, or 3D seismic first returns, as well as higher-resolution regional compilations, and other source data including Electronic Navigation Charts and satellite derived bathymetry. The new map represents decades of data collection, analysis, investment and collaboration from Australia’s seabed mapping community. The 250 m resolution is only supported where direct bathymetric observations are sufficiently dense (e.g. where swath bathymetry data or digitised chart data exist). In many regions, this 250 m grid size is far in excess of the optimal grid size for some of the input data used. The AusBathyTopo250m grid and higher-resolution regional datasets are available on the AusSeabed Marine Data Portal as the AusBathyTopo Series. This map is not suitable for use as an aid to navigation, or to replace any products produced by the Australian Hydrographic Office. Medium: Digital PDF download.
Product Type
document
eCat Id
148890
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Resource provider
Point of contact
- Contact instructions
- Place and Communities
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCESENVIRONMENTAL SCIENCE AND MANAGEMENTOCEANOGRAPHY
- ( Product )
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- Bathymetry
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- Seafloor map
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- 1 : 250, 000
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- Seabed mapping
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- Topography
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- Depth
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- Topography
- GCMD Keywords
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- Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry
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- Published_External
Publication Date
2023-10-18T23:30:24
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
To provide the public with an updated downloadable map of Australia's marine estate
Maintenance Information
asNeeded
Topic Category
geoscientificInformation oceans elevation
Series Information
Lineage
This map is a digital map, with PDF download. The maps are optimised for printing on an A1 or A0 sheet (for larger specials). Layers are updated as needed and the digital download updated. They are created in ESRI ArcMap as a 'map series'.
Parent Information
Extents
[-60.00, -8.00, 92.00, 172.00]
Reference System
WGS 84 WGS 84 / World Mercator (EPSG:3395)
Spatial Resolution
0.0025*0.0025 arc-degree (about 250 m) grid cells
Service Information
Associations
Source Information