Use your browser to open each image
in a new window to compare them.
Each image is a mosaic of three Landsat scenes lying south of Mackay, Queensland.
To illustrate the mosaic of change seen using satellite data, I include
a strip of three Landsat scenes south from the city of Mackay in Queensland.
Within this area of about 75 000 square km, a variety of landcover changes
occurred during the period 1972-1991. Extensive areas of clearing are obvious,
as is the creation of the Maraboon dam on the Nogoa River and the Emerald
Irrigation Area. If you look carefully, the relatively small areas occupied
by the Central Queensland coal fields are (only just) detectable. There
is change everywhere within this area. Some of it (witness the smoke plume
in the south eastern corner) was in progress as the satellite images were
acquired.
