Raikoke stratovolcano is located in the Central Kuril Islands, with a height of 551 m (or 2500 m from the bottom of the sea), it has a crater on its peak with a diameter of 700 m and a depth of 200 m, the composition of its rocks is andesites. The island-volcano Raikoke together with the underwater volcano 3.18 is a single volcanic massif of 19×8 km in size, the distance between their peaks is about 7 km. The relative height of the underwater volcano from the bottom of the sea is about 900 m, its top is at a depth of about 250 m, the composition of the rocks of the underwater volcano is andesibasalts and andesites. There were only two known strong eruptions of Raikoke: in 1778 and on 15 February 1924. The current explosive eruption of Raikoke volcano began at 18:05 GMT on 21 June 2019. The first message about the eruption was transmitted by Tokyo VAAC; the information about the development of the eruption based on various satellites was obtained by us using the information system “Remote monitoring of the activity of volcanoes of Kamchatka and the Kuriles (VolSatView)”. According to the Himawari-8 satellite data (http://volcanoes.smislab.ru/animation/1561927182.webm), the main phase of the eruption began with a series of large explosions that raised ash to 10–13 km above sea level, and lasted about 15 hours, forming a powerful eruptive cloud moving over 2500 km North-East from the volcano. On 30 June, the aerosol clouds from Raikoke were observed at distances from the volcano: 3100 km (Novosibirsk Islands), 3500 km (Lake Baikal), about 5500–6000 km (Northwest Canada). A detailed analysis of satellite information suggested that on 24–25 June a lava flow began to pour out on the western slope of Raikoke. It is also possible that during the eruption of Raikoke, the underwater volcano 3.18 also erupted.

14 июля 1973 г. началось извержение вулкана Тятя, расположенного в северной части о. Кунашир. В статье изложены предварительные результаты исследования извержения, а также приведены некоторые количественные оценки объема и массы извергнутого материала, количества газов, совершивших работу вулканических взрывов, тепловой энергии извержения и общей кинетической энергии взрывов. В итоге установлены следующие особенности извержения: его чисто взрывной характер, многоочаговость, преобладание пепла среди ювенильного материала.

A moderate Vulcanian type explosive eruption of Chikurachki volcano lasted from 28 till 31 March, 2016. Explosions sent ash up to 4 km above sea level, ash plumes drifted for about 600 km mainly to the southeast from the volcano, but also to the northeast, south and southwest from it. The largest area of the ash plume – up to 13 676 km2 – was detected on 30 March. During the eruption of Chikurachki volcano, the eruptive activity of Alaid volcano, which has been in the state of weak explosive eruption from 01 October 2015 till present, increased,. Ash plumes of Alaid volcano extended for about 60 km from 29 March till 01 April. To observe the eruptions we used mainly satellite images of medium resolution of the information system "Monitoring of volcanic activity in Kamchatka and the Kurile Islands" (VolSatView).