Product catalogue
The Creation of High Resolution Bathymetry Grids for the Lord Howe Island Region
Detailed seabed bathymetric data are needed to better understand our marine environment because models of seabed morphology derived from these data provide useful insights into physical processes that act on the seabed and the location of different types of seabed habitats. Lord Howe Island lies approximately 450km off the northern coast of New South Wales. It is a volcanic island with a fringing coral reef on its western shore, and a shallow (20 - 120 m) shelf surrounds the island. Bathymetry data are required in this area to help identify major seabed processes and habitats, especially relict reef structures, and to measure how well physical seabed properties act as surrogates of patterns of biodiversity on this mid-ocean carbonate shelf. The data are also required to enable modelling of tsunami as they interact with the shelf around the island and the coast.
This report describes the methodology employed in creating detailed bathymetry data grids of the Lord Howe Island region. It covers data collection, quality control and gridding. Descriptions are provided of each dataset employed, the methods used to integrate the different datasets and the attributes of the new bathymetry models.
Four new bathymetry grids are presented, including grids that integrate bathymetry with the island's topography.
Simple
Identification info
- Date (Publication)
- 2010-01-01T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/70649
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.4225/25/53D83D932D799
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Mleczko, R.
1 Author Sagar, S.
2 Author Spinoccia, M.
3 Author Brooke, B.
4
- Name
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Record
- Issue identification
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2010/036
- ISBN
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9781921781391
- Point of contact
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Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Spinoccia, M.
Place and Communities Internal Contact
- Topic category
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- Geoscientific information
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Australian and New Zealand Standard Research Classification (ANZSRC)
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Earth Sciences
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- Keywords
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HVC_144641
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- Project
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AusSeabed
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- Keywords
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GA Publication Record
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- Theme
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3D model
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- Theme
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DEM
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- Theme
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bathymetry
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- Theme
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data
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- Theme
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multibeam
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- Theme
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marine
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- Theme
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CERF
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- {1}
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AU-NSW
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- Keywords
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Published_External
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- Keywords
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marine
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- Instrument
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Compilation
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- Instrument
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Multibeam
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- Instrument
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LADS
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- Instrument
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Satellite-Derived Bathymetry
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- Instrument
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Singlebeam
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- Instrument
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Chart-derived
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Download the Record (pdf)
Download the Record (pdf)
- Distribution format
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pdf
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- OnLine resource
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Lord Howe Island Bathymetry 2010 4-250m (zip) [19.0 MB]
Lord Howe Island Bathymetry 2010 4-250m (zip) [19.0 MB]
- Distribution format
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zip
- File decompression technique
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unzip
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Resource lineage
- Statement
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The grids are derived from data in Geoscience Australia databases and recent sources which will eventually be entered into those databases. Satellite derived bathymetry was used in shallow waters. Seven swath datasets acquired between 1992 and 2009 were used. Five of the surveys supply extensive regional coverage, whilst the others are basically multibeam transits of the area. One LADS survey from the AHS was used. A high quality coastline, as well as topography data of Lord Howe and its islands were obtained from the Land and Property Information Management Authority. Eleven singlebeam surveys from the GA MARDAT database. These data range in vintage from 1971 to 1998 and were edited to remove suspect datapoints, but were left uncorrected with regards speed of sound issues. Chart data from the AHS was used in both deep and shallow water but most of it was superseded by swath data. ETOPO1 data was used in the area of two seamounts where data were sparse. One singlebeam survey fro the University of Wollongong that was previously unknown to GA was used.
- Hierarchy level
- Non geographic dataset
- Other
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GA Publication
- Description
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Source data not available.
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/a05f7892-f857-7506-e044-00144fdd4fa6
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
- Name
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GA publication: Record
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/70649
- Date info (Revision)
- 2018-04-20T06:13:41
- Date info (Creation)
- 2010-06-30T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551