4SM ETM davies reef

Optical calibration, bathymetry, water column correction and bottom typing of shallow marine areas, using passive remote sensing imageries

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
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True color composite, raw data	True color composite, deglinted data
image Z	image B
image BSC	image LBS
	Optical calibration Not easy, as there is absolutely no dryland at high tide average height of water is ~ 1 m above the reef crest Optical water type OIB+0.8 for wavelengths 477.6, 576.3 and 661.3 nm
Zoom window True color composite, raw data	Zoom window True color composite, deglinted dat
image	image Z Smart-smoothing does a good job at preserving the geomorphology
image LBS	image BSC
image WR	image WZ