GIS AND REMOTE SENSINGTECHNOLOGIES FOR TOPOGRAPHIC CHARACTERIZATION OF SEISMIC STATIONS

Topographic Amplification Factor (TAF) due to ground surface irregularity could be one of the reasons of earthquake wave amplification and unexpected damage of buildings or other tangible structures located on the top of hills in many previous studies. Though geodesists define shape of the Earth but it also could be important for seismologists to define topographic amplification factor of each seismic station with precise feedback and the formulation of new ground motion prediction equations. Topographic Position Index (TPI) is a spatial-based approach that helps classification of topographic positions which can contribute to seismic wave amplification (e.g. ridges or upper slopes) at different radii. This paper presents TPI tool of GIS to improve the fast characterization of seismic networks in Iran.