Shallow-focus seismic activity in the rear of Japan-Sakhalin insular arc and its possible tectonic nature

• Datum: 2014
• Hauptverfasser: Tikhonov, I., Lomtev, V.
• Format: Artikel
• Sprache: Russisch
• Veröffentlicht: S. Subbotin Institute of Geophysics of the NAS of Ukraine 2014
• Schlagworte: the Japan Sea; earthquakes catalogue; hypocenters distribution; Japan-Sakhalin arc; earth's crust tectonics; submarine margin; rear uplift
• Online Zugang: https://journals.uran.ua/geofizicheskiy/article/view/116056
• Назва журналу: Geofizicheskiy Zhurnal

On the base of analysis of data from different seismic bulletins for the Japan Sea basin the most comprehensive unified catalogue of earthquake with magnitude M > 3,0 and depths h < 60 km for the period 1975-2010 has been prepared for the first time. Maps of epicenter of events for the four intervals (0-10, 11-20, 21-30 and 31-60 km) and three sub-latitude sections are plotted. Structural peculiarities have been considered and possible tectonic nature of seismic zone along submarine margin or borderland of the Japan-Sakhalin island arc: regional uplift, rather mega-duplex fracture of compression faults, caused by crustal sliding at the rear of frontal deep thrust.