Abstract
For the first time the contribution of aftershock-induced landslides to denudation is calculated. This contribution strongly depends on difference between magnitudes of the earthquake and the main aftershock. A number of earthquakes took place in SE Altai in Holocene and triggered landslides are situated in close vicinity to the largest one following the 27 September 2003 Chuya earthquake (Ms = 7.3). Supposing the sameness of mechanisms of paleoearthquakes and the 2003 Chuya earthquake the value of the regional coefficient a = 1.2 is suggested. This value provides proper assessment of the contribution of aftershock-induced landslides to seismo-gravitational denudation.
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