Quantitative estimate of slope processes activity in the Southern Sikhote-Alin

Abstract

Three independent methods have been used for quantitative estimation of slope processes activity in the Southern Sikhote-Alin. The dendrochronological methods using uncovered roots and dendroscreen were modified for special freezing conditions withrespect to climate of East Russia. The so called «maximum-average» denudation rate is 0.20 to 0.25 mm/year for 25-37^o creep slopes and 0.7 mm/year for talus slopes. The minimum denudation rate for creep slopes appeared to be 0.33 mm/year. According to colluvium volume evaluation on a dated terrace surface, average denudation rates on 32-39^o creep slopes during the last 5000 years are about 0.04 to 0.07 mm per year.