A 824*1494 Landsat ETM 4 bands image of Davies Reef
Great Barrier Reef, Australia
4SM licensekey is 42 US$ for this image
Work updated in 2005
Wavelengths used are 477.6, 576.3 and 661.3 nm
Not easy, as there is absolutely no dryland at high tide :
average height of water is ~ 1 m above the reef crest
return to 4SM Study Cases