Description

Queensland Museum provider for OZCAM

Queensland Museum collections date back to the 1860s. Many early specimen records contained incomplete or inaccurate spatial information and in such cases, no interpretation of accuracy has been applied herein. When the museum commenced databasing in the mid-1980s, terms were introduced to represent assumed accuracies of collecting information. The terms below are a refinement of disparate lists and have been used for mapping to the Darwin Core field 'coordinateUncertaintyInMeters'. The table below shows how the terms are represented in metres of accuracy and the assumptions made in assigning these values.

Term coordinateUncertainty

InMeters Assumptions

Surveyed (ground control) 1 International Terrestrial Reference Frame is used for ground survey mapping

Google Earth 20 Latitude and longitude taken from Google Earth by positioning cursor over land feature

GPS reading 50 In-field GPS reading, but correct datum is not assumed

Collector's data 500 Generalised - usually legacy data, pre-GPS

Centrepoint of geographic unit 1000 Centroid values used when no other, more accurate method has been recorded, (e.g. "Fraser Island").

Gazetteer 1000 Gazeteer values used when no other, more accurate method has been recorded,(e.g. "Bundaberg, Queensland").

Geographic location given 1000 Gazeteer values used when no other, more accurate method has been recorded, (e.g. "Blue Lake").

Point in Polygon method 10000 Centroid values used when no other, more accurate method has been recorded, (e.g. "Springbrook National Park").

Regional Approximation 10000 Centroid values used when no other, more accurate method has been recorded, (e.g. "Torres Strait").

Level 1 - excellent 20 Adopted CSIRO terminology

Level 2 - good 50 Adopted CSIRO terminology

Level 3 - satisfactory 100 Adopted CSIRO terminology

Level 4 - poor 500 Adopted CSIRO terminology

Level 5 - doubtful 1000 Adopted CSIRO terminology

Geological Map (1:25 000 scale) 25 Accuracy by designation

Topographic Map (1:25 000 scale) 25 Accuracy by designation

Geological Map (1:50 000 scale) 50 Accuracy by designation

Topographic Map (1:50 000 scale) 50 Accuracy by designation

Geological Map (1:100 000 scale) 100 Accuracy by designation

Topographic Map (1:100 000 scale) 100 Accuracy by designation

Geological Map (1:250 000 scale) 250 Accuracy by designation

Topographic Map (1:250 000 scale) 250 Accuracy by designation

Geological Map (1:500 000 scale) 500 Accuracy by designation

Topographic Map (1:500 000 scale) 500 Accuracy by designation

Topographic Map (1:1 000 000 scale) 1000 Accuracy by designation

Map Reading - accurate to 1 minute 1853 Mathematical extrapolation

Citation

Queensland Museum, http://www.qm.qld.gov.au/

Rights

Creative Commons Attribution Australia 3.0 (CC BY) Creative Commons License

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Digitised records

Looking up... the number of records that can be accessed through the Atlas of Living Australia. This resource was last checked for updated data on 02 Jun 2016. The most recent data was published on 02 Jun 2016.

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Metadata last updated on 2016-06-02 17:33:01.0