UTILIZATION OF AIRBORNE PHOTOGRAPHY IN THE INVESTIGATION OF PCB CONTAMINATION IN DONNA RESERVOIR, LOWER RIO GRANDE VALLEY ,TEXAS

摘要

Both high altitude aerial color-infrared(CIR) and low altitude vertical and oblique color photography were utilized as part of an ongoing investigation of possible polychlorinated biphenyl(PCB) contamination of Donna Reservoir in the Lower Rio Grande Velley (lRGV) of southern Texas .Both types of imagery proved useful in mapping and inventorying unauthorized rural solid waste disposal sites.High altitude CIR photography provides good boundary definition and contrast between vegetated and sparsely vegetated areas and highlights geographic anomalies worthy of follow-up ground investigation. Low altitude vertical and oblique digital color photography provides detailed horizontal pixel resolution useful in inventorying, mapping ,monitoring and verification activities. Together, these aerial remote sensing photographic technologies provide a method for rapid data capture and inventory of geographically isolated resources and human impacts.