the Cocos (Keeling) Islands GIS online |
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| Dataset | |
| Title | Orthophotography |
| Custodian | Geoscience Australia |
| Jurisdiction | Australia |
| Description | |
| Abstract | Orthophotography of the Cocos (Keeling) Islands, based upon aerial photography taken taken over the islands in 1987 (islands only, not including the lagoon). |
| Search Word(s) | PHOTOGRAPHY AND
IMAGERY Aerial PHOTOGRAPHY AND IMAGERY Orthophotography |
| Geographic Extent Name(s) | Cocos (Keeling) Islands |
| Data Currency | |
| Beginning Date | 05APR1987 |
| Ending Date | 05APR1987 |
| Dataset Status | |
| Progress | Complete |
| Maintenance and Update Frequency | as required |
| Access | |
| Stored Data Format | DIGITAL - ERMapper ERS & TIFF/TFW |
| Available Format Type | DIGITAL - ERMapper ERS & TIFF/TFW |
| Access Constraint | See contact details below. |
| Data Quality | |
| Lineage | Aerial photography was flown
by Australian Survey Office Canberra in 1987, scanning was done by Kevron
Aerial Surveys and orthorectification by LandInfo (Canberra) in 2000. In December 2003 GA projected the data to UTM (WGS84) zone 47S. In February 2005 GA reprojected the imagery as a whole and re-cut the tiff imagery to improve visualisation of data. |
| Positional Accuracy | AGSO expects the
Cocos orthophotography over the main atoll to be within a meter of its
true position. Exceptions to this high level of accuracy are Horsborough Island and North Keeling Island, which are on unconnected flight lines and did not have reliable ground control available. Initial indications are that the North Keeling orthophotography could be around 35 meters out, and the Horsborough Island orthophotography could be up to 20 meters out. |
| Attribute Accuracy | not applicable |
| Logical Consistency | not applicable |
| Completeness | Appears complete for all areas. Georeferencing of Horsburgh and North Keeling Islands has not proven to be very accurate. |
| Metadata Date | 13-01-2004 |
| Contact Information | |
| Contact Organisation | Attorney-General's Department |
| Contact Position | Territories |
| Mail Address | GPO Box 594, Canberra, A.C.T 2601 |
| Locality | 111 Alinga St, Canberra |
| State | ACT |
| Country | Australia |
| Postcode | 2601 |
| Telephone | (02) 6274 6124 |
| Facsimile | (02) 6274 8040 |
| Electronic Mail Address | sean.hambrook@ag.gov.au |
| Additional Metadata | |
| Projection | UTM (WGS84) zone 47S |