A new approach for the detection of major fires caused by industrial accidents, using NOAA/AVHRR imagery
The Advanced Very High Resolution Radiometer (AVHRR) on board the NOAA satellites may be used to detect major fires caused by industrial accidents through the combined use of middle (3.55-3.93 mum) and thermal infrared (10.5-11.3 mum, 11.5-12.5 mum) channels. An algorithm was developed to identify the pixels which correspond to the sites of the industrial accidents where a major fire had developed. The algorithm was applied for two industrial accidents; Lyon, France on 2 June 1987 and Kalohori, Greece on 24 February 1986. The algorithm was based on the analysis of the differences between the brightness temperatures resulting from Channels 3 (3.55-3.93 mum) and 4 (10.5-11.3 mum) of AVHRR and of two masking filters for clouds. The first filter takes advantage of the information provided by Channels 1 (0.58-0.68 mum) and 5 (11.5-12.5 mum) of AVHRR, whereas the second introduces a threshold value for cloud top temperature. The use of the algorithm for the selected industrial accidents demonstrates its capability to detect major fires.