BORIS GRIGORYEVICH BUKCHIN PASSED AWAY 15.04.2022 25.04.2022 We are deeply saddened to announce that on April 15, 2022, Boris Grigoryevich Bukchin passed away. He was a famous seismologist, a wonderful, kind, intimate person. >>> The Variability of Earthquake Parameters with the Depth: Evidences of Difference of Mechanisms of Generation of the Shallow, Intermediate-Depth, and the Deep Earthquakes Local tsunamigenic sources in Greece, identified by pattern recognition