Geophysical study and monitoring of the recorded events nearby the Dokan Dam, NE Iraq

In this study an attempt has been made to monitor and perform analysis to the occurred earthquakes recorded by the installed seismometers in the close proximity to the Dokan dam. Three-component continuous high resolution data logger seismometers had recorded thousands of seismic events from January to December 2013. Twenty five earthquakes were utilized for further processings that covered the studied area and surroundings. The analyses include identifying the body waves from different azimuths within optimal range of frequencies from 3 to 500Hz. The waveforms were used in determining the various source parameters including location, focal depth and magnitude from their arrival times and amplitudes. Epicentral map was drawn which depicts the epicentral distances of the events from the source. Furthermore, the estimated crustal structure below the studied area reveals that the seismic activities were occurred in shallow depths (less than 10 km) within the upper part of the crust and the resulted average values for the P- and S-wave velocities were 5.97 km/sec and 3.23km/sec respectively.