SEISMICITY of the VOLCANIC AREAS of KAMCHATKA in 2018–2019

Abstract

The results of near real-time monitoring of the active Kamchatka volcanoes are described. Continuous monitoring was carried out using three remote methods: 1) seismic monitoring according to automatic telemetric seismic stations; 2) visual and video observation; 3) satellite observation of the thermal anomalies and the ash clouds. Daily information about volcanic activity is published in the Internet (http://www.emsd.ru/ ~ssl/monitoring/main.htm) since February 2000. The results of seismic activity of the Northern (Shiveluch, Kluchevskoy, Bezymianny, Krestovsky and Ushkovsky), Avacha (Avachinsky and Koryaksky), MutnovskyGorely volcano group and Kizimen, Zhupanovsky, Karymsky and Kambalny volcanoes for 2018–2019 are presented. Within two years 29199 earthquakes with KS=1.6–10.1 were located for Northern volcano group, 714 earthquakes with KS=1.6–7.6 – for Avacha volcano group, 247 earthquakes with KS=1.7–7.3 – Mutnovsky-Gorely volcano group, 116 earthquakes with KS=2.6–8.7 for Kizimen volcano, 315 earthquakes with KS=2.2–10.9 for Zhupanovsky volcano, five earthquakes with KS=6.2–8.3 for Kambalny volcano and four earthquakes with KS=5.2–6.7 for Karymsky volcano. Maps of epicenters, quantities of seismic energy and earthquake distribution according to class are given. All periods of activity were fixed and investigated by remote methods in 2018–2019: intensive volcanic activity of Sheveluch volcano associated with new cone, two paroxysmal explosive eruptions of Bezymianny volcano and the summit explosive-effusive eruptions of Kluchevskoy volcano.