Skip to main content
ARS Home » Research » Publications at this Location » Publication #82014
Title: QUANTIFICATION OF CHLOROPHYLL IN SMALL AGRICULTURAL IMPOUNDMENTS USING AIRBORNE VIDEO

Author
item AVARD, M - SCEES,UNIV-OKLA,NORMAN,OK
item SCHIEBE, FRANK - SSTD GROUP,STILLWATER,OK
item Everitt, James

Submitted to: Biannual Workshop in Color Photography and Videography in Resource
Publication Type: Proceedings
Publication Acceptance Date: 6/15/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary: Aerial photography and satellite imagery have shown potential for identification of various water parameters such as turbidity and chlorophyll. In the past few years, video cameras have been used for remote sensing applications because of the real-time imagery they provide and their multispectral capabilities. A study was conducted in flood retention reservoirs along the Little Washita River watershed in Oklahoma to assess airborne videography for detecting chlorophyll-a concentrations. Results showed that multispectral videography could be used to approximate chlorophyll-a concentrations. Video could be used on both cloudy and sunny days. These findings should be of interest to environmental managers and consultants.

Technical Abstract: Airborne video cameras equipped with narrow band filters were used in an attempt to assess chlorophyll-a concentration in flood retention reservoirs of the Little Washita River watershed in Oklahoma. The video data was first processed by converting digital numbers into radiance values (uW/cm2/sr) and then by incorporation of irradiance values in determining reflectance. Results indicate that the ability to approximate chlorophyll-a concentration in the reservoirs improves with each step in the processing process.