|
The three spectra shown on this page were made with a DiveSpec in just a few minutes from the same coral at a depth of 17 m (56 ft) on the Great Barrier Reef, Australia.
 |
REFLECTANCE
Reflectance spectrum relative to 99% Spectralon®. The peak at 575 nm is due to fluorescence
(see next graph). Note also the strong reflectance rise in the deep red asssociated with chlorophyll.
|
 |
FLUORESCENCE
Fluorescence emission spectrum for the same coral. The saturated signal at 450 nm is from the excitation light source. Peaks for cyan, green, orange and red (chlorophyll, 685 nm) fluorescence can easily be seen in the data. (Vertical axis in instrument response units.) |
 |
SIGNATURE
Spectrum of light reflected from the surface of the same coral under ambient
illumination. The orange fluorescence plays a significant role in the spectrum,
and solar-induced chlorophyll fluorescence can also be seen. (Vertical axis in instrument response units.) |
|
