Authors / CoAuthors
McGregor, M.J. | Zhong, Q.
Abstract
The dataset was created by Geoscience Australia using the framework described in Section 33 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGS Act) and previous Acts. The international, scheduled areas and coastal waters used in this dataset are those found in the current Australian Maritime Boundary Dataset 2014 (AMB2014a). This version contains a number of technical amendments made on the basis of user feedback. These include: - Removal of lease AC/P17 - Harmonisation of maritime boundaries, scheduled area and graticular block datasets in block SC51 The dataset is comprised of both polygons and points created to very high precision, accurate to within millimetres. The blocks have been cut by Australia's international boundaries, the scheduled areas and the coastal waters. Each block is assigned a polygon, including partial blocks. All blocks are titled with their block ID, and a list of vertices that make up the blocks. Each vertex of the dataset is also replicated as a discrete point in the points dataset. The design of the dataset allows for the exact location of every vertex to be known to millimetre precision. The corner coordinates of blocks are now defined to a high precision, and can be found by querying the appropriate point. Existing production licences AC/RL4, and AC/RL5 are included in the dataset. The blocks are attributed with fields containing information on: - Block ID - Parent 1 Million Mapsheet - Offshore Area - Epoch of the boundaries used to cut the data AMB2014 - Datum - Origin of the mapsheet in AGD66 - The position of all vertices in the block - The number of vertices in the block - The area of the block in acres - The area of the block in hectares The calculation used to find the area of the blocks is estimated to be precise to better than 1%. This is considered to be sufficient as under the permit and licensing arrangements in the OPGGS Act, the area of a block has no relevance. Therefore the area figure is provided solely for reference.
Product Type
dataset
eCat Id
83153
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- Thematic DataAdministrative Data
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- AU
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Geospatial Information Systems
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- Published_Internal
Publication Date
2015-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
asNeeded
Topic Category
boundaries
Series Information
Lineage
The dataset was created internally in Geoscience Australia based on the arrangements prescribed under Section 33 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006. To maintain lineage with the Act, a points database was constructed first in AGD66 dividing the area into 5' by 5' blocks (5' = 5 minutes), to ensure proper presentation of the blocks in any projection additional vertices were inserted every 30" (30 seconds). The points were transformed to the GDA94 datum using the prescribed NVT2 framework where available, outside this area a 7 parameter transformation was used. The blocks were then made by connecting the pertinent points together into polygons.
Parent Information
Extents
[-63.0, -7.0, 92.0, 175.0]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Source data not available.