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The development of high-sulfur gas fields, also known as sour gas field, is faced with a series of safety control and emergencymanagement problems. The GIS-based emergency response system is placed high expectations under the consideration of highpressure, high content, complex terrain and highly density population in Sichuan Basin, southwest China. The most researches onhigh hydrogen sulphide gas dispersion simulation and evaluation are used for environmental impact assessment (EIA) oremergency preparedness planning. This paper introduces a real-time GIS platform for high-sulfur gas emergency response.Combining with real-time data from the leak detection systems and the meteorological monitoring stations, GIS platform providesthe functions of simulating, evaluating and displaying of the different spatial-temporal toxic gas distribution patterns and evaluationresults. This paper firstly proposes the architecture of Emergency Response/Management System, secondly explains EPA’sGaussian dispersion model CALPUFF simulation workflow under high complex terrain and real-time data, thirdly explains theemergency workflow and spatial analysis functions of computing the accident influencing areas, population and the optimalevacuation routes. Finally, a well blow scenarios is used for verify the system. The study shows that GIS platform whichintegrates the real-time data and CALPUFF models will be one of the essential operational platforms for high-sulfur gas fieldsemergency management

A REAL-TIME GIS PLATFORM FOR HIGH SOUR GAS LEAKAGE SIMULATION, EVALUATION AND VISUALIZATION