Band 6 (Thermal Infrared) comparison between single years and Temporal Merge

Unlike other spectral bands, Band 6 is not typically used as it is acquired at lower resolution (60-metres) and covers the thermal range with a direct correlation to surface temperature. However, this band is particularly useful for geological applications if effectively processed.

The area in the images below lies between Paraburdoo and Newman in the Hamersley Range iron province of Western Australia. The images use only the data range above the median to show high anomalous infrared. Images for each of the nine years used in the sum show quite distinct patterns. One year (2008) has a distinct cloud masking, while 1993 is masked in part by smoke from bush fires.

Using individual years, it would be difficult to identify an area of anomalous thermal emission that was consistent, and there are large areas of diffuse anomalism that are difficult to interpret. Using Landsat TM3 imagery, anomalous areas can be identified with confidence, allowing rapid refinement of exploration targets.

Sum 1987 to 2100 (9 years)

Sum

1:1 million topography

topo

1987

1987

1993

1993

1999

1999

2005

2005

2011

2011

1990

1990

1996

1996

2003

2003

2008

2008