Remote detection of soil geochemical anomalies from an aircraft platform - Examples from the Virginia PiedmontThe use of remote-sensing data on forest leaf flush to identify areas with anomalously high soil heavy-metal concentrations is demonstrated using airborne Thematic Mapper Simulator (TMS) leaf-area-index data obtained over two sites in Virginia in spring 1983 and 1984. Mean-reflectance differences, especially in the 760-900-nm and 630-690-nm bands, corresponding to delayed leaf flush are found to be good indicators of higher heavy-metal concentration. Airborne and ground-based canopy-temperature measurements are also shown to be significantly higher in high-heavy-metal areas than in control areas.
Document ID
19860063100
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bell, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Evans, C. S. (Maryland, University College Park, United States)