Authors / CoAuthors
Unknown
Abstract
This dataset contains polygon cadastral data and non-spatial attribute data for the Cocos (Keeling) Islands. Horsburgh Island and North Keeling Atoll are not included in this dataset.
Product Type
dataset
eCat Id
81722
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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- GIS Dataset
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- AU-ACT
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2004-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
The cadastre for the Cocos (Keeling) Islands is maintained by Landgate, and supplied each year to Geoscience Australia (most recent May 2013). Landgate supplies both current property boundaries (cadastre.shp) and lodged property boundaries (lodged.shp)In December 2004 Geoscience Australia received the scheduled cadastral update from Tony Yeomans of the Department of Land Information (DLI, formerly DoLA). This update consisted of two ESRI shapefiles and two access databases. The data supplied by Landgate are merged with existing data held by Geoscience Australia (see list at bottom of lineage section) to form the complete datasets distributed as part of the Cocos GIS. The data are merged using the Pin field which is used in both the Landgate supplied cadastre data and the ground audit data.For more information on the fields provided by Landgate see the Landgate data dictionary located on the DVD at CocosGIS\data\cadastre\source titled Cadastre_Geospatial_Data_Dictionary.pdf. One of the ESRI shapefiles contains current property boundary information and the other contains lodged changes to property boundaries. Both ESRI shapefiles arrived at Geoscience Australia pre-projected in UTM (GDA94). The reason for differences between the lodged cadastre and the current cadastre is that current data could have been calculated or digitized, etc. When lodged data is integrated into current, the area is spatially upgraded with the new survey data (lodged data) as this would be more accurate. One access database contained data relating to tenure information including address. The other contained data on reserves. In January 2005 Geoscience Australia also obtained ground audit data from Peter Brockmulen of the Department for Planning and Infrastructure (DPI, formerly DoLA). This ground audit was conducted in 2004 at the request of the Department of Territories and Rural Services in Western Australia. It contains data describing land use and reserve usage. To produce the final cadastral information the files were modified and combined as follows. Due to initial consultation with users of the GIS it was decided to keep the cadastre containing current property boundaries and the cadastre containing lodged changes to property boundaries separate. As such the following changes were made to each file separately. Additionally the cadastral boundary for North Keeling Island, taken from the last version of the cadastre, was joined to the current cadastre shapefile. From discussion with users of the GIS it became apparent that the field LOT_TYPE was causing confusion with its meaning. This is because it is a computer generated field that does not reflect the tenure of the land. Instead land tenure is derived from the PI_PARCEL field. To avoid this problem Geoscience Australia removed the LOT_TYPE field and replaced it with a TENURE field derived from the PI_PARCEL field and based on the definitions from the NORM manual as supplied by DLI. Using tenure information from the database supplied by DLI and from the land audit information supplied by Peter Brockmulen, Geoscience Australia joined on the fields ADDRESS, ZONING, RESERVE, PURPOSE and MANAGEMENT were joined on lot number. For multiple instances of lot numbers information was entered manually based on the land audit information supplied by Peter Brockmulen. From reserve data supplied by DLI the fields RSV_VESTIN, RESERVE_US and LGA were joined using the PIN field. Finally Geoscience Australia made the decision to move the cadastral data to be in line with previous data such as orthophotography.
Parent Information
Extents
[-12.24, -12.05, 96.8, 96.95]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
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