Revista Brasileira de Cartografia (Dec 2006)
Automatic Techniques for generation of environmental sensitivity index map to oil spill in the Guajará Bay , Belém-PA.
Abstract
A routine of techniques and procedures was established in order to produce Environmental Sensitivity Index (ESI) maps for oil spill based on optical (Landsat ETM+ 7) and radar (Radarsat-1 Wide 1) remote sensing, multi-sensor data fusion and geographic information system. Seven landscape units were recognized related to high-land (coastal plateaus with artificial structures - ISA 8B and Estuarine wall - ISA 1B) and recent coastal environments, as well as their ESI (flood -plain - ISA 10B ; Mangrove - ISA 10A; Vegeted muddy banks - ISA 9B; Estuarine beach - ISA 4; Cliff - ISA 3). The results obtained in the investigation have opened new perspectives in oil industry regarding the operational security and environmental protection, social-environmental assessment, technology for emergencies, coastal management and environmental information system.