3D Models - Metadata

2007 Offshore Acreage Release

These six 3D models display the acreage areas, surrounding features and infrastructure in their true three dimensional location.

Projection

Geographic

Datum

World Geodetic System (WGS84)

Model Bounding Boxes

Money Shoal Bonaparte Browse Canning Carnarvon Gippsland
top left 129 57' 36" E
08° 12' 01" S
122° 47' 01" E
08° 48' 33" S
119° 50' 03" E
12° 48' 34" S
118° 50' 10" E
14° 51' 59" S
113° 46' 33" E
16° 08' 53" S
146° 57' 00" E
37° 00' 26" S
bottom right 134° 42' 03" E
12° 51' 05" S
131° 12' 27" E
15° 38' 10" S
125° 52' 22" E
18° 08' 32" S
124° 26' 44" E
20° 05' 11" S
120° 15' 12" E
22° 36' 21" S
150° 10' 06" E
40° 48' 33" S

X Y Translation

Money Shoal Bonaparte Browse Canning Carnarvon Gippsland
X shift -132.33033 -126.99555 -122.85375 -121.64079 -117.01465 -148.55919
Y shift 10.52582 12.72257 15.46736 17.47652 19.37688 38.40814

The above X Y translations have been applied to enhance graphics performance within each model by moving the origin to the centre.

Z Values

  • Z scale factor: 1000

Z values within the models are represented in scaled two way time (TWT) in seconds. Bathymetry was originally sourced in metres and multiplied by 0.000009 to match the xy coordinates in decimal degrees. The above Z scale factor was applied to make the cross sections and terrain visible within the scaled area of the models. Bathymetry in metres was converted to TWT through dividing depths by 750 (as the speed of sound in water is 1500m/s).

Note: Because of the scaling applied in the Z direction, the depth of the model cross sections below the bathymetry is not to scale and does not relate to the depth of the surrounding bathymetric features.

Contact:

Megan Lech
Updated: 1 July 2008