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Metadata : Land Systems of the Roper River Catchment, Northern Territory |
Index:
Metadata Details:
Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile
Version:1.0
Date Metadata Extracted:2024-11-22
Date Metadata Last Updated:2018-10-11
Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB77120C806B6E040CD9B0F274EFE
Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=2DBCB77120C806B6E040CD9B0F274EFE
Citation
ANZLIC Identifier:2DBCB77120C806B6E040CD9B0F274EFE
Title:Land Systems of the Roper River Catchment, Northern Territory
Citation Date:2000-01-14
Date Type:publication
Custodian:Department of Environment, Parks and Water Security
Description
This land resource survey dataset describes landform, soil and vegetation over the Roper River Catchment area of the Northern Territory. The mapped information describes attributed land unit polygons over an area of 59,992km2 and has been prepared at a scale of 1:250,000. Department survey code: ROPER_250
This spatial dataset was amalgamated within the compilation dataset Land System Surveys of the Northern Part of the Northern Territory. (Department survey code NORTH_250)
Refer to Metadata record: www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=8E85C28F9C9285EBE040CD9B21447F57
- biota
- environment
- geoscientificInformation
- imageryBaseMapsEarthCover
Bounding Coordinates:
- North Bounding Coordinate:-12.93
- South Bounding Coordinate:-16.55
- East Bounding Coordinate:135.84
- West Bounding Coordinate:132.56
Dataset Status
Dataset ID:ANZNT0782000020
Language:English
Character Set: Latin 1
Progress:completed
Maintenance and Update Frequency:asNeeded
Data Currency Start Date:1988-07-01
Data Currency End Date:1992-06-30
Access Constraint:
Download the spatial data package (contains spatial data, maps and reports) via data.nt.gov.au/
You are licensed to use the DENR geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: creativecommons.org/licenses/by/4.0/legalcode
If you do not agree to the terms and conditions you must not use the geospatial products.
You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement:
Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.
Data Quality
Lineage:Original map unit boundaries delineated from aerial photographs and stereoscope interpretation. Map units transferred to topographic map sheets via a mapograph. Original maps were hardcopy only. With the advent of geographic information systems polygons were digitised by rectifying the original hard copy maps.
Map unit boundaries derived using hard copy aerial photography and stereoscope, satellite imagery (post 1993), geological and topographic maps. Field data (site data) described and classified according to national standards at the time of capture.
Map unit polygons collected via geographic information system (ARC/MapInfo). Core landform, soil and vegetation attributes attached to map units with additional attributes unique to individual surveys.
Positional Accuracy:POLYGON DATA
Map unit boundaries transferred from aerial photographs to topographic maps, using the best available topographic mapping at the time (generally 1:100 000) via a mapograph. Level of accuracy depends on the number of control points on individual aerial photographs. Control points include creek lines, cadastre and other topographic features. Depending on the nature of the landscape (the number of control points), positional accuracy may vary. Positional accuracy generally considered moderate to high.
POINT SOURCE DATA
Survey teams navigated during field operations with topographic maps, aerial photographs and prismatic compass's. Point source locations marked on aerial photography in the field. Positional accuracy considered within 300m but generally below 200m depending on the terrain. Site coordinates derived by transferring site locations from aerial photographs to topographic maps and coordinates calculated. In some cases sites have been georeferenced directly from aerial photography to Google Earth Web Map Server in MapInfo or ArcGIS.
Attribute Accuracy:Attributes assigned according to the dominant feature. For example where ten sites have been grouped to describe a particular map unit and two different soils described from these sites then the dominant soil is chosen.
Logical Consistency:GIS editing tools were used to rectify all overshoots and undershoots in linework. Using ArcInfo topological consistency checks were performed to detect flaws in the spatial data structure. The coverage was cleaned, to eliminate any duplicates arcs. The coverage was built for arcs and polygon topologies. A label errors routine was run to detect unlabelled polygons. A node errors routine was run to identify pseudo nodes and dangles. Checks were done to ensure that all classified polygons are closed, nodes are formed at intersections of lines and that each polygon has only one label.
Completeness:Complete.
Contacts
Name Organisation Position Role Phone Fax Data Requests Officer Department of Environment, Parks and Water Security Geospatial Services Branch (on behalf of department) distributor datarequests.depws@nt.gov.au
Data Dictionary
No data dictionary defined for this dataset
Supplementary Information
NRETAS Survey reference ID. Roper_250; Report reference No. LRD92052; No. of survey sites - 300
Bibliographic Reference:
Aldrick, J.M. and Wilson P.L. (1992)
LAND SYSTEMS OF THE ROPER RIVER CATCHMENT, NORTHERN TERRITORY
Conservation Commission of the Northern Territory
This record maintained using the NTLIS Metadata Tool