Meteotsunami on October 1, 2018 in the Area of South Kuril Islands

As a result of the installation of autonomous bottom hydrostatic pressure recorders in the bays of the Shikotan and Kunashir Islands, records of the most significant meteorological tsunami in the Far Eastern region of Russia were obtained (the oscillation range is 1.9 m in Dimitrov Bay, which is the largest instrumentally recorded height). This event was caused by an atmospheric front moving rapidly (along with the cyclone) in a northeasterly direction, with a pressure jump of 7 hPa. Intense fluctuations in the bays of the southern Kuril Islands continued for several hours mainly at resonant frequencies, they posed a danger comparable to moderate seismic tsunamis. Numerical modeling has shown that the movement of atmospheric fronts with speeds of 90–120 km/h along the coast of the Lesser Kuril Ridge causes a noticeable response both on the Pacific shelf and in the South Kuril Strait, which is amplified in the bays due to resonant effects.