Exogenous geodynamic processes activation in the south of Primorsky Krai in August 27–28, 2019. Yu.A. STEPNOVA, Yu.V. GENSIOROVSKIY, V.A. LOBKINA, L.E. MUZYCHENKO, A.A. MUZYCHENKO, A.A. OREKHOV, A.A. STEPNOV, A.V. KONOVALOV
Keywords:
Primorsky Krai, anthropogenic factors, dangerous geodynamical processes, precipitationAbstract
Exogenous geodynamic processes activation in the south of Primorsky Krai in August 27–28, 2019. Yu.A. STEPNOVA1, Yu.V. GENSIOROVSKIY1, V.A. LOBKINA1, L.E. MUZYCHENKO1, A.A. MUZYCHENKO1, A.A. OREKHOV2, A.A. STEPNOV1, A.V. KONOVALOV1 (1Far East Geological Institute, FEB RAS, Sakhalin department, Yuzhno-Sakhalinsk, 2Far East Geological Institute, FEB RAS, Vladivostok).
The problem of atmospheric precipitation effect on exogenous processes activation (EPA) within the south of Primorsky Krai urban territories is reviewed in this paper. The main EPA factors in the investigated area are: regime, intensity, duration and total amount of precipitation. The trigger initiating the landslide and mudflow processes is intense heavy rains occurrence during typhoons and tropical cyclones over Primorye Territory in July–September. The mass EPA occurrence is possible when precipitation daily maximum exceeds 70 mm. The catastrophic event frequency triggered by precipitation is 1–3 years. Consequences of mass EPA during the cyclone in August 27–28, 2019 over the south of Primorye are well documented.
