Page - 1101 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 1 Location of the Gambiri diversion dam site in the eastern Afghanistan. The data necessary for the seismic hazard analysis were obtained from a survey of the type, location and characteristics of seismic sources, especially faults. Information obtained from earthquake catalogues gave input on the historical seismicity of the region. The catalogues were also used as a basis for probabilistic analyses of earthquake ground motions. The area surveyed for assessing the seismicity comprised a circle with a radius of about 300 km from the site. Epicenters in this region are shown in "Fig 2". Most of the major faults in the study area follow an NE-SW trend. The Konar- Nari Fault was identified as major active fault. The strongest historical earthquake relevant to the Badakhshan district of northeast Afghanistan is the event of 1832 with an estimated magnitude Ms 7.4. This event can be ascribed to the activity of the central Badakhshan. 3. ESTIMATION OF PEAK GROUND MOTION PARAMETERS 3.1. SEISMICITY PARAMETERS 1101