NDWI Density Slice
Landsat-5 scene covering an area immediately north of Lake Corangamite, and southwest of Ballarat, in Victoria.
This is a Normalised Difference Water Index image (NDWI);
(NIR - SWIR) / (NIR + SWIR)
(in Landsat terms: (band 4 - band 5 ) / (band 4 + band 5))
NIR = near infra-red, SWIR = shortwave infra-red. The range of values of this index have been grouped into a few discrete categories, the dark blue representing the wettest fields, and brick-orange representing the driest fields, yellow and green being intermediate.
Annual rainfall increases from the low lying basin containing the lakes, to the south, across the plain within this view, towards forest-covered hills to the north.
NDWI Density Slice
Landsat-5 scene covering an area immediately north of Lake Corangamite, and southwest of Ballarat, in Victoria.
This is a Normalised Difference Water Index image (NDWI);
(NIR - SWIR) / (NIR + SWIR)
(in Landsat terms: (band 4 - band 5 ) / (band 4 + band 5))
NIR = near infra-red, SWIR = shortwave infra-red. The range of values of this index have been grouped into a few discrete categories, the dark blue representing the wettest fields, and brick-orange representing the driest fields, yellow and green being intermediate.
Annual rainfall increases from the low lying basin containing the lakes, to the south, across the plain within this view, towards forest-covered hills to the north.