Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2022, Vol. 19, No. 3, pp. 153-161
Remote monitoring of the 2020–2021 summit and lateral eruptions of Klyuchevskoy volcano, Kamchatka
O.A. Girina
1 , E.A. Loupian
2 , A.G. Manevich
1 , D.V. Melnikov
1 , A.А. Sorokin
3 , L.S. Kramareva
4 , I.M. Romanova
1 , A.A. Nuzhdaev
1 , I.A. Uvarov
2 , S.I. Malkovsky
3 , S.P. Korolev
3 1 Institute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, Russia
2 Space Research Institute RAS, Moscow, Russia
3 Computing Center FEB RAS, Khabarovsk, Russia
4 Far Eastern Center of SRC Planeta, Khabarovsk, Russia
Accepted: 01.07.2022
DOI: 10.21046/2070-7401-2022-19-3-153-161
Klyuchevskoy volcano is one of the most active volcanoes in the world. The 2020–2021 summit explosive-effusive eruption of the volcano lasted 4 months. After a break of 9 days, a lateral eruption occurred on the northwestern slope of the volcano, which lasted a month. The summit explosive eruption manifested itself in Strombolian and, more rarely, Vulcanian activity. Explosions raised ash up to 7.5 km above sea level, and ash plumes moved up to 500 km in different directions from the volcano. The effusive phase of the eruption began on October 4, 2020, and continued until the end of the eruption; lava flows moved along the Apakhonchich and Kozyrevs volcano-tectonic chutes. The movement of lava flows along the Apakhonchich chute was often accompanied by large collapses of tephra from its sides, while the ash rose up to 9.6 km above sea level. The lateral eruption was the formation of two fissures on the northwestern slope of the volcano, filled with lava, and the formation of a cinder cone in the upper part of the western fissure. The lava flow stretched for 1.2 km, the mud flow — for 30 km. A detailed description of the eruption course became possible thanks to real-time monitoring of the volcano using various satellite data in the information system “Remote monitoring of the activity of volcanoes in Kamchatka and the Kuriles” (VolSatView, http://kamchatka.volcanoes.smislab.ru) and video observations.
Keywords: volcano, Klyuchevskoy, Kamchatka, eruption, video data, satellite monitoring, VolSatView, KVERT
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