Sheng-Huei Chang Gary L. Raines Frank C. Canney Roger Ashley Anthony R. Barringer William E. Collins 1980 <p>Airborne spectroradiometer surveys over several forest-covered sulfide bodies indicate that mineralization has affected the overlying vegetation; anomalous spectral reflectivity properties can be detected in the vegetation using appropriate remote-sensing interments and data-reduction techniques. Mineralization induces subtle changes in the shape of the chlorophyll <i>a</i> and <i>b</i> absorption spectrum between 550 and 750 nm. The observed spectral variations appear specifically to be on the wings of the broad red chlorophyll bars, centered at about 680 nm.</p> application/pdf en Society of Exploration Geophysicists Airborne-biogeochemical survey test-case results article