ABSTRACT
Researchers and practitioners in the filed of natural hazards have recognized Geographic Information Systems (GIS) to be a significant tool in modeling spatial phonemes related to hazard and risk. A GIS-based platform is developed by which shaking intensity and seismic landslide hazard zonation maps are generated in a short time after the earthquake. In the Alborz and Central Iran zones, the earthquakes are less frequent but with relatively higher magnitude than those in Zagros. A principal cause of earthquake damage is landsliding, and the ability to predict earthquake-triggering landslide displacements is important for many types of seismic-hazard analyses and for the design of engineered slopes. The conventional Newmark analysis calculates the cumulative displacement, DN, of the friction block as it is subjected to the acceleration of a given earthquake time history. When a damaging earthquake occurs, the server activate the program and sends earthquake magnitude and epicenter location.
