TY JOUR TI A Geoinformation system for estimating the hazards of catastrophic volcanic eruptions KW GIS KW catastrophic volcanic eruptions KW digital maps. JO Russian Journal of Earth Sciences AU Bogatikov, O.A. AU Veselovsky, A.V. AU Makhanova, T.M. AU Meshcheryakova, V.B. PY 2001 IS 3 PB Geophysical Center of the Russian Academy of Sciences