TY JOUR TI FCAZ-recognition based on declustered earthquake catalogs KW earthquake-prone areas KW fcaz KW pattern recognition KW earthquake catalog KW epicenter KW foreshocks KW aftershocks KW california KW kamchatka peninsula JO Russian Journal of Earth Sciences AU Dzeboev, B.A. AU Karapetyan, J.K. AU Aronov, G.A. AU Dzeranov, B.V. AU Kudin, D.V. AU Karapetyan, R.K. AU Vavilin, E.V. PY 2020 IS 20 PB Geophysical Center of the Russian Academy of Sciences