Danila Chebrov

• PhD
• Managing Director at Kamchatka branch of the Geophysical Service of Russian Academy of Sciences

The seismicity review of Kamchatka and surrounding territories for 2020 is given. In the Kam chatka earthquake catalogue, the minimum local magnitude of completeness is MLmin=3.5, and for the Kamchatka seismically active region (=50.5–56.5° N, =156.5–167° E) MLmin=3.0, and for earthquakes with h≥350 km under the Okhotsk sea MLmin=4.1. The Kamchat...

The article presents instrumental and macroseismic data on the Paramushir earthquake of March 25, 2020, ML=7.7, Mw=7.4, discusses its tectonic position and features of the aftershock process. This event is the strongest instrumentally recorded earthquake with a source located in the Pacific lithospheric plate in the area of the Northern Kuril Islan...

Explosive volcanic eruptions are accompanied by infrasound wave disturbances in the atmosphere, which can propagate over large distances. Recognition of such signals is of great interest, and infrasound moni-toring in combination with other methods can be used to improve the efficiency of volcanic hazard assessment. Kamchatka Branch of the Geophysi...

The article presents data on the types of observations and information resources of the Kamchatka Branch of the Geophysical Survey of the Russian Academy of Sciences (as of 2022), which can be used by scientific and educational organizations of the Russian Federation for studying precursors and developing methods for predicting earthquakes and volc...

The mechanisms of preparation and occurrence of the strongest deep-focus earthquakes with MW≥8, as well as their surface manifestations, remain insufficiently studied because of the lack of the relevant data. There are but three seismic events of this kind which have so far been instrumentally recorded. This paper describes the identification and a...

The seismicity review of Kamchatka and surrounding territories for 2018–2019 is given. In the Kamchatka earthquake catalogue, the minimum local magnitude of completeness is MLmin=3.8, and for the Kamchatka seismically active region (latitude = 50.5–56.5° N, longitude = 156.5–167° E) MLmin=3.7, and for earthquakes with h≥350 km under the Okhotsk sea...

Природные и антропогенные явления часто генерируют инфразвуковые сигналы [9, 8, 1]. Эксплозивные извержения вулканов сопровождаются инфразвуковыми волновыми возмущениями в атмосфере, которые могут распространяться на большие расстояния [5, 13]. Многолетний опыт регистрации акустических сигналов на Камчатке, показал, что атмосферная акустика удачно...

The strong Mw = 7.4 earthquake occurred on March 25, 2020 in the region of Northern Kuril Islands, with its epicenter on the ocean side of the Kuril-Kamchatka deep-water trench, to the east from its axis. The earthquake was felt on all the Kuril Islands, South and East Kamchatka, the maximum shaking was recorded in Severo-Kurilsk with intensity I =...

Studies of initiation of large earthquakes are usually focused on frictional instabilities occurring in the near vicinity of the future rupture. Possible contributions of long‐distance interactions with large‐scale tectonic instabilities remain unknown. Here we analyze seismic catalogs and geodetic time series during a few months preceding the 2013...

https://authors.elsevier.com/c/1hyXk1LkU3g7nO The area of Central Kamchatka limited by latitudes of 52.5 and 54 degrees includes six active volcanoes (Avacha, Koryaksky, Zhupanovsky, Mutnovsky, Gorely and Opala), as well as a number of dormant and extinct stratovolcanoes, monogenic cones and large calderas. Furthermore, it contains the Malko-Petr...

We have carried out a preliminary study of the relationship between local seismicity and the behavior of atmospheric temperature and humidity based on data from the local seismic catalog and archival data from the Karimshina observatory in Kamchatka. The chemical potential of water vapor molecules contained in the surface layer of the atmosphere wa...

The seismicity review of Kamchatka and surrounding territories for 2016–2017 is given. In the Kamchatka earthquake catalogue, the minimum local magnitude of completeness is MLmin=4.0, and for earth-quakes with h≥350 km under the Okhotsk sea MLmin=4.3. The Kamchatka catalogue of earthquakes with ML=3.6–7.3 for 2016–2017, published in the Appendix to...

The occurrence and the style of volcanic eruptions are largely controlled by the ways in which magma is stored and transported from the mantle to the surface through the crust. Nevertheless, our understanding of the deep roots of volcano-magmatic systems remains very limited. Here, we use the sources of seismovolcanic tremor to delineate the active...

The seismicity review of Kamchatka and surrounding territories for 2015 is given. In the Kamchatka earthquake catalogue, the minimum local magnitude of completeness is MLmin=3.5, and for earthquakes with h≥350 km under the Okhotsk sea MLmin=3.6. The Kamchatka earthquake catalogue for 2015 with ML3.5, published in the Appendix to this issue, includ...

In this paper we present brief review of results of Kamchatka Seismic Monitoring and Earthquake Prediction System operations in the last five years. In addition, the retrospective of development of hardware, equipment and software of the System performed. The main direction in the System evolution in this period concerned the creation and moderniza...

Камчатский филиал ФИЦ ЕГС РАН ведет сейсмический и геофизический мониторинг Камчатки, данные которого представляют огромный интерес, прежде всего, для фундаментальной науки. Землетрясения и извержения вулканов, особенно сильнейшие, дают ключ к пониманию деталей внутреннего строения Земли и физическим процессам, происходящим в ее глубинах. Кроме тог...

Системы оперативного оповещения о сейсмических событиях функционируют во всех развитых странах мира и особенную важность они имеют для сейсмоактивных регионов. Информация о параметрах очага землетрясения оперативно используется при планировании работ по ликвидации ЧС. В случае сильного землетрясения особую важность приобретает информация об интенси...

Службу предупреждения о возможности цунами с момента организации этой службы в г. Петропавловск-Камчатский выполняет сектор «Петропавловск-Цунами» (Камчатский филиал ФИЦ ЕГС РАН), совместно с ФГБУ «Камчатское УГМС». Дежурный персонал сектора «Петропавловск-Цунами» осуществляет регистрацию и обработку землетрясений Камчатки, Дальнего Востока и мира...

Для оперативной оценки сейсмической опасности, прогноза землетрясений и извержений вулканов, возможных последствий их воздействий в 1998 г. было учреждено Камчатское отделение Федерального центра прогнозирования землетрясений (КамО ФЦПЗ) как структурное подразделение Геофизической службы РАН в рамках целевой программы «Развитие Федеральной системы...

In this article, we describe a method for predicting of the epicenter location region of Kamchatka and Commander earthquakes (EQs). It is based on the properties of the precursory atmospheric ULF/ELF (1–30 Hz) radiation and the spatial statistics of local EQs in relation to the Kuril-Kamchatka and Aleutian trenches. From this statistics, it follows...

Global Navigation Satellite Systems have been extensively used to investigate the ionosphere response to various natural and man-made phenomena for the last three decades. However, ionospheric reaction to volcano eruptions is still insufficiently studied and understood. In this work we analyzed the ionospheric response to the 11–16 June 2009 VEI cl...

The seismicity review of Kamchatka and surrounding territories for 2014 is given. In Kamchatka earthquake catalogue minimum local magnitude of completeness is MLmin=3.5, and for earthquakes under the Okhotsk sea with h≥350 kmMLmin=3.6. The Kamchatka earthquake catalogue for 2014 with ML3.5, published in the Appendix to this annual, includes 1114 e...

Since 2010, Kamchatka Branch of Federal Research Centre of “United Geophysical Service of RAS” has been developing the Seismological Data Information System (SDIS). Its aim is to integrate into a unified information field all seismological data obtained as a result of seismic monitoring of Kamchatka, accelerate and facilitate daily activity due to...

Klyuchevskoy and surrounding volcanoes in central Kamchatka form the Northern Group of Volcanoes (NGV), which is an area of particularly diverse and intensive Pleistocene‐Holocene volcanism. In this study, we present a new seismic tomographic model of the crust and uppermost mantle beneath NGV based on local earthquake data recorded by several perm...

In the paper we presents results of kinematic parameter VP/VS calculations for source area of strong earthquake (MW = 7.3), which occurred near conjunction of Kuril-Kamchatka and Aleutean trenches in December 20, 2018. For the VP/VS-field calculation we used data of moderate and weak earthquakes (MW ≤ 6.5) which were registered by Kamchatka Branch...

The paper presents the first results of integrated research of the strong seismic event (Uglovoye Podnyatiye earthquake (UPE) with a magnitude of Mw=7.3) that occurred on December 20, 2018 in the junction zone between the Kuril-Kamchatka and Aleutian island arcs. The authors has provided macroseismic information about the UPE, calculated peak groun...

This paper is devoted to a method of short-term earthquake (EQ) prediction in Kamchatka, Russia. Properties of low-frequency magnetic fields are the basics of the method, and we used two seismo-electromagnetic phenomena in the EQ prediction: 1. seismo-ionospheric depression in the frequency range of 0.01–0.1 Hz (ULF depression), 2. seismo-atmospher...

On December 18, 2018 at 23:48 UTC in the Earths atmosphere, at the height of 25,6 km over the Bering sea, destruction of a meteoroid with formation of a shockwave occurred. The mass of the Beringovomorsky meteoroid is estimated as 1600 tons, and its diameter is estimated as 9-14 meters. If assessment is right, then for the last 30 years it was the...

The seismicity of Kamchatka and surrounding territories for 2013 is viewed. The minimum local magnitude of completeness is MLmin=3.25 in the Kamchatka earthquake catalogue totally, and MLmin=4 for earthquakes under the Okhotsk sea (with h≥350 km). The Kamchatka earthquake catalogue of 2013 with ML≥3.6, which includes 1750 events, is published. 146...

The February 28, 2013 earthquake (MwGCMT=6.8), which occurred on the southeast coast of Kamchatka, is discussed. The instrumental hypocenter location reported by the KB GS RAS is φ=50.67N, λ=157.77E, h=61 km. Three magnitudes were obtained: local magnitude ML=6.9, code-wave magnitude Mc=6.6, mo-ment magnitude Mw=6.7. The focal mechanisms of the F...

The scaling behavior of rise times Tr determined within earthquake source inversions that used strong‐motion data is determined using estimates as accumulated in the SRCMOD database. The Tr versus M0 trend derived from this data set is close to logTr=1/3logM0+ const; this agrees with the assumption of self‐similarity of earthquake ruptures. No bias...

17 июля 2017 г. на трансформном разломе Беринга (на границе малой литосферной плиты Берингии и Командорского блока Алеутской островной дуги) произошло сильнейшее в регионе за годы инструментальных сейсмологических наблюдений задуговое землетрясение с MW =7.8, MC=8.2, названное Ближне-Алеутским. Оно вызвало сотрясения с интенсивностью I=5-6 баллов н...

A new approach is proposed for determining earthquake hypocenters aimed at a more comprehensive characterization of its uncertainty and ambiguity. Application of the new approach to study the seismic focal subduction zones and volcanic seismicity is discussed by the example of the data of the Kamchatka Branch of the Geophysical Survey of the Russia...

The largest instrumentally recorded regional back-arc earthquake with MW = 7.8, MC = 8.2 occurred on July 17, 2017 on the Bering transform fault (the boundary between the Beringia minor lithospheric plate and the Komandorskii (Commander) block of the Aleutian island arc). This seismic event, called the Near Islands earthquake or Near Islands Aleuti...

Kamchatka Expert Council was established in 1998 as subdivision of the Russian Expert Council for Earthquake Forecasting, Assessment of Seismic Hazards and Risk. Kamchatka is one of the most seismoactive region of the world. More than 30 earthquakes with M>6.0 occurred in 1998–2018. So problem of earthquake and volcano eruption forecasting is impor...

Kamchatka Expert Council was established in 1998 as subdivision of the Russian Expert Council for Earthquake Forecasting, Assessment of Seismic Hazards and Risk. Kamchatka is one of the most seismoactive region of the world. More than 30 earthquakes with M>6.0 occurred in 1998–2018. So problem of earthquake and volcano eruption forecasting is impor...

The strong MW 6 .7 e arthquake occurred on October 13, 2018 at 11:10 UTC (23:10 local time) in the Sea of Okhotsk at a depth of ~500 km. According to the Kamchatka Branch of Geophysical Survey of the Russian Academy of Sciences (KB GS RAS), the epicenter of the earthquake was located ≈320 km to west of Petropavlovsk-Kamchatsky and ≈160 km from the...

Новая система предупреждения о цунами на Дальнем Востоке России, созданная в 2006–2010 гг, находится в эксплуатации уже восемь лет. Она пришла на смену устаревшей СПЦ, которая была разработана после Большого Камчатского землетрясения 1952 г и запущена в эксплуатацию в 1958 г. Основой СПЦ-2010 по-прежнему остается сейсмический метод, опирающийся на...

The neural network approach is proposed for studying very-low- and low-frequency (VLF and LF) subionospheric radio wave variations in the time vicinities of magnetic storms and earthquakes, with the purpose of recognizing anomalies of different types. We also examined the days with quiet geomagnetic conditions in the absence of seismic activity, in...

Early warning systems are becoming increasingly important in the modern world. These systems combine several components: predictive systems (For example, tsunami warning systems), earthquake early warning systems, emergency message services, and systems of seismic damage monitoring. Information about shaking intensity becomes especially important i...

В юго-восточной части Ключеской группы вулканов находятся два крупных потухших стратовулкана: Большая Удина и Малая Удина, которые вместе с несколькими экструзивными куполами составляют единую Удинскую группу С октября 2017 г. в районе Удинской группы вулканов наблюдается сейсмическая активизация. С 1.10.2017 г. по 28.03.2018 г. в районе Удинской...

Описана методика массового определения очаговых спектров землетрясений Восточной Камчатки с Mw=3-6. Применена многополосная фильтрация записей (12 полос с осевыми частотами от 0.25 до 40 Гц), затем оценены амплитудные спектры S-волн и среднеквадратические амплитуды кода-волн. По этим данным определены два варианта спектральной моментной магнитуды M...

17 июля 2017 г. в 23:34 по Гринвичу (18 июля в 11:34 по местном времени) в Командорском сегменте Алеутской островной дуги произошло сильное землетрясение с магнитудой MW = 7.8 (широта 54.35 с.ш., долгота 168.90 в.д., глубина 7 км). Эпицентр землетрясения находился в 200 км к юго-востоку от пос. Никольское (рисунок), расположенного на о. Беринга,...

29.03.2017 г. у восточного побережья Камчатки в юго-западной части Корякского сейсмического пояса произошло редкое для этой зоны сильное, но не вызвавшее разрушений и цунами, землетрясение с магнитудой МW = 6.6. Гипоцентр находился под акваторией залива Озерного, в южной его части, поэтому это сейсмическое событие было названо Южно-Озерновским земл...

Tsunami Warning System (TWS) in Kamchatka was established in Petropavlovsk-Kamchatsky, Russia in 1956-1959 years as a direct result of the great earthquake and tsunami that occurred on November 05, 1952 (M = 8.5). In 2006-2010 TWS in the Russian Far East was deeply modernized as the response of Federal officials to the tragedy of December 26, 2004....

30.01.2016 г. в Северной части Камчатской сейсмофокальной зоны на глубине 178 км произошло сильное, не вызвавшее разрушений землетрясение с магнитудой МW = 7.2, ощущавшееся на территории Камчатского края с интенсивностью до 6 баллов по шкале MSK-64 и получившее название «Жупановское землетрясение» в соответствии с географическим положением его эпиц...

28 февраля 2013 года в 14 час. 05 мин. по Гринвичу (01 марта 2013 г. 02 час. 05 мин. по местному времени) у юго-восточного побережья Камчатки произошло сильное землетрясение с магнитудой MW = 6.8. Очаг землетрясения находился в Тихом океане, примерно в 90 км к востоку-северо-востоку от г. Северо-Курильска и в 260 км к югу-юго-западу от г. Петропавл...

24 мая 2013 года в 05 час 44 мин по Гринвичу (в 17 час 44 мин по местному времени) в Охотском море, к западу от п-ва Камчатка, произошло сильное землетрясение с магнитудой Мw = 8.3. Это сильнейшее землетрясение, зарегистрированное в районе Камчатки за годы детальных сейсмологических наблюдений (с 1961 г. по настоящее время). Эпицентр землетрясения...

The aftershock processes that occurred in 1990–2008 on the Kamchatka Peninsula and in the adjacent water area are numerically modeled with the aim of forecasting the aftershock activity. The aftershocks are identified by the Molchan-Dmitrieva algorithm followed by the analysis of spatiotemporal distribution of the earthquakes, which gives the final...

A system of algorithms and software modules is described for automatic real time determination of epicenters and magnitudes of potential tsunami earthquakes. Modules are compiled into a single software system called Tsunami Source Quick Location (SS TSQL). The TSQL complex was successfully tested on dozens of real digital recordings. Currently, the...

For the last several years in Far East of Russia new Tsunami Warning System (TWS) is developed and introduced. This work represents fundamental remaking of System, which had existed before. It concerns both means of observations, and methods of processing and operator instructions. One of the main requirements to the Seismic subsystem of Tsunami Wa...

Aftershock sequences of some strong earthquakes of Kamchatka, the Kurile Islands, and Japan are examined. Such source parameters as the length L, along-dip width W, motion on fault D, and stress drop Δσ are determined from the aftershock sequences considered. The values of these parameters were obtained by the formal estimation of linear source par...

The three-dimensional analysis of aftershock fields of 27 strong and moderate Kamchatka, Kuril and Japanese earthquakes (6.0 < Ms < 8.1) is performed and the three-dimensional models of their sources were developed in assumption that the aftershock field for a first few days after the main event presents approximately correct images of the earthqua...