ID 



E 

 C 



\ 



CM 



E 

 (J 

 \ 

 (fl 



4-> 



10 



QJ 

 U 



c 







■rH 



"D 



a 



L 

 L 



10 



UPWELLING SPECTRAL IRRADIANCE OVER Acropora palmota 

 MOLASSES REEF RUN 12 AUGUST 14. 1982 

 MER-1015 SPECTRORAOIOMETER 



SCAN 

 # 



1 



2 

 3 

 4 



D/t 



FILE 

 # 



40 

 41 

 43 

 42 



2, 



DEPTH 

 (M) 



1. 8 

 3. 1 

 3. 6 

 3. 9 



TOTAL QUANTA 

 (400-700nm) 



1. 9 

 1. 8 

 1. 7 

 1. 5 



10 

 10 

 10 

 10 



13 

 13 

 13 

 13 



400 



500 600 



Wavelength (nm. ) 



700 



Figure 3.--Upwel li ng spectral irradiance scans taken over a grove of elkhorn 



coral, Acropora palmata , at 4.4 m depth on Molasses Reef, Key Largo. Note 



that 589 nm is a relatively invariant wavelength. The increase in far red at 



694 nm is interpreted as in situ fluorescence by the symbiotic zooxanthel lae 

 of the coral . 



the bandwidths of the Landsat MSS sensor: 



Band 1 (green) = (.091x488nm + .76x507nm + .913x520nm + .98x540nm 

 + .97x570nm + .75x589nm + .05x625nm) / 4.514 



195 



