ESTIMATION OF THERMAL CHARACTERISTICS OF WASTE DISPOSAL SITES USING LANDSAT SATELLITE IMAGES

The aim of this work is to develop a thermal model of waste disposal sites /WDS/ as a part of the complex analysis of the WDS using Landsat satellite images. In the paper an integrated thermal model of WDS is proposed. In the model a lot of thermal parameters such as temporal temperature variations of WDS surface, thermal risks, epicenters and thermal isolines, temperature forecasting, and thermal stabilization are included. The temporal temperature variations as seasonal and chronological changes are presented. The following approaches are proposed: assessment of the fire risk and the decay risk in WDS through calculating the surface temperatures; detection of the thermal isolines and the thermal epicenters; estimation of the temperature stabilization and the time stabilization in the WDS. An algorithm for applying the images as time-series of temperatures in the surroundings of the specified WDS for the specified thermal characteristics of the WDS and displays the thermal model of the landfill. A method of converting the sensor data into the temperature values, the methods of regression analysis (the estimation of the regression line, the estimation of periodic and trend components of the temperature time series), the limit filtering method, method of risk assessment of fires and decay in WDS are presented and applied. The proposed methods and algorithms are tested for two WDS near Moscow Kutchino and Torbeevo. The general classification of the thermal characteristics of the WDS is presented.