Authors / CoAuthors
Abstract
The Geophysical Processing and Data Access (GPDA) project at Geoscience Australia has undertaken a programme of collating, editing and cataloguing all bathymetry data in the Australian Region. For convenience this region has been loosely defined as extending from 5°S to 80°S and 45°E to 180°E. The contents of the Bathymetric Database consists of four datatypes: - Multibeam Echosounder Data (including LADS) - Singlebeam Echosounder Data - Depths from the digitisation of pre-existing maps - "Depths" derived from remote sensing techniques (and produced grids) The dataset described by this metadata record is the Multibeam Echosounder Dataset. It consists of the soundings of a number of multibeam surveys (170 by April 2007), that vary in size from a few km2 to about 250,000 km2 in size. Data coverage of the defined region is not complete. The datasets were collected by a variety of vessels (Australian and foreign) using a range of sensor systems. As a result the original data exist in a variety of raw data formats on a variety of media. These raw data have been archived in a secure repository at GA. For more details, one should access the metadata records for the individual surveys or the report given in the "Additional Metadata" section of this metadata record. All of the raw data have been imported into the CARIS HIPS application and processed using a common workflow. The processed data have then been exported as GSF "day" files (MBSystem format 121) and stored on Unix directories. These files are easily manipulated using most multibeam data applications
Product Type
nonGeographicDataset
eCat Id
66149
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- Marine MapBathymetry Map
- ( Theme )
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- marine
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Marine Geoscience
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- Published_Internal
Publication Date
2008-06-13T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
continual
Topic Category
geoscientificInformation
Series Information
Lineage
The first multibeam survey was acquired in 1989 by the HMAS Cook. Since then numerous multibeam surveys have been conducted in the Australian Region by a variety of vessels using a range of sensor systems. Most surveys have been conducted by organisations outside GA. A number of these have been conducted by foreign research vessels transiting the Australian region en route to their research areas. The GPDA project has undertaken to collate the data from these surveys in order to better understand the morphology of the seabed and to be able to supply data to GA research projects. Approaches have been made to all operators of multibeam capable vessels known to have operated in the Australian region. GPDA believes it has all available multibeam data in its holdings. Only a couple of surveys have proved difficult to obtain, but we are aware of them and will continue to seek the data from them. In addition, GPDA regularly approaches organisations known to be entering the Australian EEZ and requests that they seek permission from the Department of Foreign Affairs and Trade (DFAT) to conduct multibeam operations within Australian waters and then submit the data to GA.
Parent Information
Extents
[-80.0, -5.0, 45.0, 180.0]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Source data not available.