TY JOUR TI Spectral characteristics of foreshocks preceding major earthquakes of the Kurile-Kamchatka Arc and their application to the prediction of the main shock time KW major earthquakes KW foreshocks KW Kurile-Kamchatka Arc KW analysis of waveforms. JO Russian Journal of Earth Sciences AU Chepkunas, L.S. AU Rogozhin, E.A. AU Benikova, V.I. PY 2001 IS 3 PB Geophysical Center of the Russian Academy of Sciences