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Aerial photographic water color variations from pollution in the James RiverA photographic flight was made over the James River on May 17, 1977. The data show that, in general, James River water has very high sunlight reflectance. In the Bailey Bay area this reflectance is drastically reduced. Also shown is a technique for normalizing off-axis variations in radiance film exposure from camera falloff and uneven sunlight conditions to the nadir value. After data normalization, a spectral analysis is performed that identifies Bailey Creek water in James River water. The spectral results when compared with laboratory spectrometer data indicate that reflectance from James River water is dominated by suspended matter, while the substance most likely responsible for reduced reflectance in Bailey Creek water is dissolved organic carbon.
Document ID
19790027528
Document Type
Conference Paper
Authors
Bressette, W. E. (NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
October 1, 1978
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Meeting Information
American Congress on Surveying and Mapping and American Society of Photogrammetry, Fall Convention(Albuquerque, NM)
Distribution Limits
Public
Copyright
Other