There are 36 active volcanoes in Kamchatka and Northern Kuriles, from 3 to 8 volcano eruptions occur here every year. Daily satellite monitoring of volcanoes has been performed by the Kamchatka Volcanic Eruption Response Team (KVERT) since 1997 in cooperation with colleagues from the Alaska Volcano Observatory (USA). Since 2002, KVERT scientists have processing and analyzing primary images of satellite systems NOAA (AVHRR), TERRA and AQUA (MODIS), etc. in close–to–real time to detect ash plumes and thermal anomalies on active volcanoes. The multiparameter analysis of the available published information about volcanoes, as well as visual and satellite data obtained by KVERT scientists during 24 years of daily monitoring of volcanic activity, made it possible to identify the main features of the activity at each of the active volcanoes and assess their degree of danger for air transportation and population of the peninsula. With the creation in 2011 of the information system “Remote monitoring activity of volcanoes of Kamchatka and the Kuriles (VolSatView)”, volcanologists opportunity have the opportunities that have no analogues in the world to conduct satellite observations of active volcanoes. VolSatView combines a wide range of data from various satellite systems coming from different sources and allows us to process operational and retrospective satellite information directly in the web–interface by means of specially created tools, to compare it with video information, to simulate ash plumes propagation, to classify various volcanogenic objects and etc. VolSatView enables to solve problems at different levels — from on–line monitoring of volcanoes activity to the fundamental problems in volcanology. The character of volcanic activity changes and the actuality of solving the problem of “how the volcano works” remain. To accomplish this task and for searching precursors of explosive volcanic eruptions, it is necessary to continue long–term remote observations of the volcanoes in the region; to study changes in their activity with time; to compare behavior of volcanoes supplying the eruptive products of similar and contrast compositions to the earth surface.

The volcanoes of Kamchatka are the most active in the world. Annually, from 3 to 7 volcanoes produce eruptions, during which the explosions eject ash to 10−15 km above sea level, and ash clouds spread thousands of kilometers from volcanoes. Strenuous volcanic activity could cause ash falls in towns and settlements, destruction of forests and communications. Ash clouds and plumes pose a serious threat to the present-day jet aviation. Since 1993, the Kamchatka Volcanic Eruption Response Team (KVERT) has conducted daily monitoring of Kamchatka volcanoes to mitigate volcanic hazards to airline operations and population. Since 2014, satellite monitoring of volcanoes is carried out by KVERT scientists using the VolSatView information system that since 2016 has utilized data from Himawari-8 geostationary satellite. The system has created special tools that allow us to work with promptly received data, as well as analyze series of long-term observations. Using data from Himawari-8, as well as the tools implemented in VolSatView to work with them, enables to: significantly raise the efficient response to detection of explosive events in the region; identify the onset of eruptive events with an accuracy of 10 minutes or less; track and forecast all changes in the dynamics of volcanic activity, including the near onset of strong explosive events. The paper describes the technology features for integrating Himawari-8 data into VolSatView and the main possibilities of working with them, implemented now
in the system.

The active andesitic Zhupanovsky Volcano consists of four coalesced stratovolcano cones. The historical explosive eruptions of 1940, 1957, and 2014‒2016 discharged material from the Priemysh Cone. The recent Zhupanovsky eruptions were studied using satellite data supplied by the Monitoring of Active Volcanoes in Kamchatka and on the Kuril Islands information system (VolSatView), as well as based on video and visual observations of the volcano. The first eruption started on October 22 and lasted until October 24, 2013. Fumaroles situated on the Priemysh western slope were the centers that discharged gas plumes charged with some amount of ash. The next eruption started on June 6, 2014 and lasted until November 20, 2016. The explosive activity of Zhupanovsky was not uniform in 2014–2016, with the ash plumes being detected on satellite images for an approximate total duration of 112 days spread over 17 months. The most vigorous activity was observed between June and October, and in November 2014, with a bright thermal anomaly being nearly constantly seen on satellite images around Priemysh between January and April 2015 and in January–February 2016. The 2014–2016 eruption culminated in explosive events and collapse of parts of the Priemysh Cone on July 12 and 14, November 30, 2015, and on February 12 and November 20, 2016.

Активный андезитовый вулкан Жупановский состоит из четырех слившихся конусов стратовулканов. Исторические эксплозивные извержения в 1940, 1957, 2014–2016 гг. происходили из конуса Приемыш. Недавние извержения Жупановского были изучены с использованием спутниковых данных, полученных из информационной системы “Мониторинг активности вулканов Камчатки и Курил” (VolSatView), а также некоторых видео- и визуальных наблюдений вулкана. Первое извержение Жупановского началось 22 октября и продолжалось до 24 октября 2013 г. Центрами мощного выноса газовых шлейфов, содержащих некоторое количество пепла, были фумаролы, расположенные на западном склоне Приемыша. Новое извержение вулкана началось 6 июня 2014 г. и продолжалось до 20 ноября 2016 г. Эксплозивная активность Жупановского в 2014–2016 гг. была неравномерной, на спутниковых снимках пепловые шлейфы были отмечены примерно 112 дней в течение 17 месяцев. Наиболее активно вулкан работал с июня до октября и в ноябре 2014 г., с января до апреля 2015 г. и в январе–феврале 2016 г., в это время на спутниковых снимках в районе конуса Приемыш почти постоянно отмечалась яркая термальная аномалия. Кульминацией извержения вулкана Жупановский в 2014–2016 гг. были эксплозивные события и обрушения частей конуса Приемыш 12 и 14 июля и 30 ноября 2015 г. и 12 февраля и 20 ноября 2016 г.

Bezymianny is one of the most active volcanoes in Kamchatka and the world. The intensification of its activity began in December 2016 after four years of silence during 2012–2016. There were three paroxysmal explosive volcanic eruptions in 2017; the paper is devoted to the event on December 20 with ash removal up to 15 km above sea level. We describe the course of the eruption and the results of its analysis, including an animated image of the motion of the ash cloud from the volcano, performed on a series of images of Himawari-8 (http://dvrcpod.planeta.smislab.ru/animation/1513757110.gif), with overlaid on it results of modeling the distribution of this ash cloud (http://dvrcpod.planeta.smislab.ru/animation/1513777733.gif). The eruptive cloud moved northeast of the volcano at an average speed of 100 km/h, the main area covered by ash clouds was about 78 000 km2, including 42 600 km2 on land. Ash clouds after the eruption were recorded in the atmosphere at a distance of 1500–2000 km to the northeast of the volcano until December 22, 2017. In addition to ash deposits, as a result of the eruption, deposits of pyroclastic flows (with run out to 5–6 km from the volcano) and mud streams (about 18 km) were formed in Vostochnaya Valley and Sukhaya Khapitsa River. Satellite monitoring of the volcano and analysis of the eruption data was carried out using information systems VolSatView and Signal.