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RECORD NUMBER: 841 OF 871

OLS Field Name OLS Field Data
Main Title Use of Water Raman Emission to Correct Airborne Laser Fluorosensor Data for Effects of Water Optical Attenuation.
Author Bristow, Michael ; Nielsen, David ; Bundy, Donald ; Furtek, Robert ;
CORP Author Environmental Monitoring Systems Lab., Las Vegas, NV.
Year Published 1981
Report Number EPA-600/J-81-184;
Stock Number PB82-153784
Additional Subjects Remote sensing ; Water analysis ; Chlorophylls ; Aerial surveys ; Design ; Performance evaluation ; Fluorescence ; Water pollution ; Concentration(Composition) ; Surface waters ; Reprints ; Laser spectroscopy ; Water pollution detection ; Raman spectroscopy
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB82-153784 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 20p
Abstract
Airborne laser fluorosensor measurements of fluorophore concentrations in surface waters are highly sensitive to interference from changes in optical attenuation. This interference can be eliminated by normalizing the fluorescence signal with the concurrent water Raman signal. In our application to remotely monitor chlorophyll a concentrations in fresh waters, the Raman-corrected chlorophyll a fluorescence measurements were found to be highly correlated with chlorophyll a ground truth data. Also, the reciprocal of the water Raman signal was seen to vary directly as the beam attenuation coefficient. It is suggested that this latter relationship be exploited as a means for remotely sensing changes in the optical attenuation of surface waters.