Page Comparison

AUXILLARY CONTOUR

Definition: – An additional contour used to aid relief interpretation over flatter or unique terrain,usually half the standard contour interval. The chosen values are of equal elevation above the Australian Height Datum.

Alternate Terms: Supplementary Contour

• Capture as a 2D polyline along the feature

• Capture at an elevation of 5 metres above the Australian Height Datum

• Auto-generate from the Shuttle Radar Topographic Missing (SRTM) digital terrain model where a 5 metre contour that has been captured using higher accuracy source data does not exist

• If a 5 metre contour captured using higher accuracy source data does exist, that data is to be incorporated into the feature class

INDEX BATHYMETRIC CONTOUR

Definition: Being every fifth Intermediate Bathymetric Contour - classified as Feature Type “Index Bathymetric Contour”. 

Alternate Terms:

• Capture as a 3D polyline along the feature

• Capture with a contour interval of 10 metre below the surface of the water

• Every fifth Intermediate Bathymetric Contour captured is classified as Feature Type “Index Bathymetric Contour”

INDEX CONTOUR

Definition: Being every fifth Intermediate Contour - classified as Feature Type “Index Contour” e.g., elevation values of 10m, 50m, 100m, 150m

Alternate Terms:

• Capture as a 3D polyline along the feature

• Capture with a contour interval of 10 metre

• Every fifth Intermediate Contour captured is classified as Feature Type “Index Contour”.

INDEX DEPRESSION CONTOUR

Definition: – Being every fifth Intermediate Depression Contour - classified as Feature Type “Index Depression Contour”.

Alternate Terms:

• Capture as a 3D polyline along the feature

• Capture with a contour interval of 10 metre below the surrounding landform

• Every fifth Intermediate Depression Contour captured is classified as Feature Type “Index Depression Contour”.

INTERMEDIATE BATHYMETRIC CONTOUR

Definition: An imaginary line joining points of equal depth below the Australian Height Datum, showing increasing depth at 10 metre intervals.

Alternate Terms: Basic Bathymetric Contour

• Capture as a 3D polyline along the feature

• Capture with a contour interval of 10 metre below the surface of the water

• Auto-generate from an appropriate digital terrain model (if available) where the Bathymetric contours do not exist.

• If a Bathymetric contours over the area do exist, that data is to be incorporated into the feature class.

• Every fifth Intermediate Bathymetric Contour is classified as Feature Type “Index Bathymetric Contour”.

INTERMEDIATE CONTOUR

Definition: Representing an imaginary line on the ground joining points of equal elevation above the Australian Height Datum, showing increasing and decreasing elevation values at 10 metre intervals.

Alternate Terms: Basic Contour

• Capture as a 3D polyline along the feature

• Capture with a contour interval of 10 metre

• Auto-generate from the Shuttle Radar Topographic Missing (SRTM) digital terrain model where contours that has been captured using higher accuracy source data do not exist.

• If 10 metre contours over the area do exist, that data is to be incorporated into the feature class.

• Every fifth Intermediate Contour is classified as Feature Type “Index Contour”.

INTEMEDIATE DEPRESSION CONTOUR

Definition: Representing an imaginary line on the ground joining points of equal elevation above the Australian Height Datum, Depressions show decreasing elevation values at 10 metre intervals.

Alternate Terms: Basic Depression Contour

• Capture as a 3D polyline along the feature

• Capture the depression in the landform

• Capture with a contour interval of 10 metre below the surrounding landform

• Auto-generate from the Shuttle Radar Topographic Missing (SRTM) digital terrain model where contours that has been captured using higher accuracy source data do not exist.

• If 10 metre contours over the area do exist, that data is to be incorporated into the feature class.

• Every fifth Intermediate Depression Contour is classified as Feature Type “Index Depression Contour”.