Home – Home – Jornals – Russian Geology and Geophysics 2002 number 11

Analysis of breakage and seismic strain associated with the aftershocks of the 19 August 1992 M=7.3 Suusamyr earthquake shows that the surface rupture occurs in the region of highest homogeneous strain. Reorientation of stress axes on the tips of the rupture is accompanied by rift-type aftershocks. The nearly horizontal N-S orientation of the principal P-axis remained invariable and that of the T-axis changed 25 years before the main shock, during the aftershock activity, and later, which is consistent with the direction of maximum compression in the region.