Ground Velocity Prediction Based On Shot Distance Shot Size And Shot Site Environment Across The Main Ethiopian Rift

Accurate Prediction of grand velocity is essential in determining seismic shot size whichrnminimizes risk to nearby manmade structures yet still ensures acceptable signal-noise ratiornat large distances. In our study ground velocity data from the 2003 EAGLE conducted acrossrnthe Main Ethiopian Rift were compared with the semi-empirical ORIARD formula on eitherrnrare of the MER. The ORIARD formula predicts velocities for scaled distance greater thanrn1.85 km per kgl/2, but over predicts for velocities less than 1.85 km per kgl/2. However,rnwithin MER, the ORIARD formula predicts velocities between 2 and 8 scaled distances, butrnover predicts velocities of a scaled distance less than 2 km per kgl/2 while under predictsrnfor a scaled distance greater than 8 km per kgl/2.

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