Browsing by Author "Ayele, Fisseha"

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    Surface Wave Induced Ground Particles Vibration at Eastern And Western Ethiopian Plateaus
    (Addis Ababa Universty, 2005-07) Ayele, Fisseha
    Blasting of explosives on or under the surface of the earth always induce seismic wave of all kinds that propagate in every direction away from the point of explosions. In the course of seismic propagation in ground medium, ground vibration will occur that may result distraction on man made structures unless appropriate seismic method of pre-Explosion ground vibration prediction are made to determine the size of explosive energy to be applied and relative distance of shot and man made structures are estimated. In this research ground vibration prediction is made on the West and East Ethiopian plateau from surface wave recordings from two 900 kg and 1900 kg and 1100 Kg explosions made at Gohatsion and Gebre Guracha and Kula areas and peak ground vibration measurement made by Guralp 6TD seismic recorder at different points along EAGEAL profile 1. As a result, the measured PPV at the western plateau is over determined by the oriard minimum prediction formula at large distances while at the Eastern plateau the observed value is greater than the prediction obtained from the Oriard maximum prediction formula.