Anelastic-attenuation coefficient γ and the correlation of Ao values of Richter magnitude formula for Albania

Abstract

Using some graphical and analytical methods recommended mostly by American authors, a value of γ = 0.007052 km^-1 is determined for 1 Hz Lg surface waves of near earthquakes of Albania. Starting from this value of γ, a reevaluation of the corrections for the A_o factor in the Richter’s magnitude formula for Albania is also carried out.

For epicentral distances 80-700 km the difference in magnitude determination between the values obtained using tabulated Richter factor and corrected values is 0.1-0.4.