Seismic monitoring of the Plosky Tolbachik eruption in 2012–2013 (Kamchatka Peninsula Russia)

Senyukov, S.; Nuzhdina, I. N.; Droznina, S.; Garbuzova, V. T.; Kozhevnikova, T. Yu.; Sobolevskaya, O.V.; Nazarova, Z.A.; Bliznetsov, V.E.

doi:10.1016/j.jvolgeores.2015.06.018

“…Our tomographic model also reveals the interconnected feeding system of the most NGV volcanoes through flow of magma and volatile rich fluids at the base of the crust along the TBKFZ. This supports the hypotheses proposed in previous studies (e.g., Fedotov et al, 2010) and may explain the observed significant correlations between the eruptive activities of the major NGV volcanoes (Senyukov et al, 2017).…”

Section: Discussionsupporting

confidence: 91%

“…Some of the KVG volcanoes episodically manifest seismic and/or fumarolic activity; others are considered as dormant or extinct, but all of them may potentially represent serious volcanic hazard. KVG volcanoes are also known for their very intense and diverse seismic activity (e.g., Senyukov, 2013; Senyukov et al, 2015) that includes long episodes of tremors (e.g., Droznin et al, 2015; Gómez‐García et al, 2018; Soubestre et al, 2018, 2019) and many swarms of long‐period earthquakes (Frank et al, 2018; Shapiro et al, 2017). Besides KVG, in this study, we consider two other active volcanoes: Shiveluch to the north and Kizimen to the south, as well as a number of extinct volcanic structures, such as Zarechny and Kharchinsky volcanoes to the north, Nikolka to the south, and Shish and Tumrok volcanoes to the east.…”

Section: Introductionmentioning

confidence: 99%

Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography

Koulakov

¹

,

Shapiro

²

,

Sens‐Schönfelder

³

et al. 2020

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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 permanent and temporary seismic networks including a large-scale experiment that was conducted in 2015-2016 by an international scientific consortium. Having an unprecedented resolution for this part of Kamchatka, the new model reveals many features associated with the present and past volcanic activity within the NGV. In the upper crust, we found several prominent high-velocity anomalies interpreted as traces of large basaltic shield volcanoes, which were hidden by more recent volcanic structures and sediments. We interpret the mantle structure to reflect asthenospheric flow up through a slab window below the Kamchatka-Aleutian junction that feeds the entire NGV. The interaction of the hot asthenospheric material with fluids released from the slab determines the particular volcanic activity within the NGV. We argue that the eastern branch of the Central Kamchatka Depression, which is associated with a prominent low-velocity anomaly in the uppermost mantle, was formed as a recent rift zone separating the NGV from the Kamchatka Eastern Ranges.

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“…Tolbachik volcano (C), the dormant volcanoes Zimina (B) and B. Udina (D), Tolbachik Dol (E), and the Tolud R. area (F). It should be noted that square (C) contains the TFE-50 area (Tolbachinskoe …, 2017;Senyukov et al, 2015), while square (E) encloses the area of the Great Tolbachik Fissure Eruption of 1975-1976 (The Great Tolbachik …, 1984). For the six squares we made selections of earthquakes for depths equal to or less than 40 km using the POLYGON program and found daily Seismic Energy Centers (SEC) for each selection using the CenterEnergy program (authored by V.E.…”

Section: The Data and The Methods Of Studymentioning

confidence: 99%

A Joint Study of Seismicity and SAR Interferometry Observations for Assessing the Possibility of an Eruption of the Dormant Bolshaya Udina Volcano

Senyukov

¹

,

Михайлов

²

,

Nuzhdina

³

et al. 2020

J. Volcanolog. Seismol.

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

“…Some of the KVG volcanoes episodically manifest seismic and/or fumarolic activity; others are considered as dormant or extinct, but all of them may potentially represent serious volcanic hazard. KVG volcanoes are also known for their very intense and diverse seismic activity (e.g., Senyukov, 2013;Senyukov et al, 2015) that includes long episodes of tremors (e.g., Droznin et al, 2015;Gómez-García et al, 2018;Soubestre et al, 2018Soubestre et al, , 2019 and many swarms of longperiod earthquakes (Frank et al, 2018;. Besides KVG, in this study, we consider two other active volcanoes: Shiveluch to the north and Kizimen to the south, as well as a number of extinct volcanic structures, such as Zarechny and Kharchinsky volcanoes to the north, Nikolka to the south, and Shish and Tumrok volcanoes to the east.…”

Section: Introductionmentioning

confidence: 99%

Mantle and crustal sources of magmatic activity of Klyuchevskoy and surrounding volcanoes in Kamchatka inferred from earthquake tomography

Koulakov

¹

,

Shapiro

²

,

Sens‐Schönfelder

³

et al. 2020

Preprint

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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 permanent and temporary seismic networks including a large-scale experiment that was conducted in 2015-2016 by an international scientific consortium. Having an unprecedented resolution for this part of Kamchatka, the new model reveals many features associated with the present and past volcanic activity within the NGV. In the upper crust, we found several prominent high-velocity anomalies interpreted as traces of large basaltic shield volcanoes, which were hidden by more recent volcanic structures and sediments. We interpret the mantle structure to reflect asthenospheric flow up through a slab window below the Kamchatka-Aleutian junction that feeds the entire NGV. The interaction of the hot asthenospheric material with fluids released from the slab determines the particular volcanic activity within the NGV. We argue that the eastern branch of the Central Kamchatka Depression, which is associated with a prominent low-velocity anomaly in the uppermost mantle, was formed as a recent rift zone separating the NGV from the Kamchatka Eastern Ranges.

show abstract

Seismic monitoring of the Plosky Tolbachik eruption in 2012–2013 (Kamchatka Peninsula Russia)

Cited by 8 publications

References 14 publications

Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography

Mantle and Crustal Sources of Magmatic Activity of Klyuchevskoy and Surrounding Volcanoes in Kamchatka Inferred From Earthquake Tomography

A Joint Study of Seismicity and SAR Interferometry Observations for Assessing the Possibility of an Eruption of the Dormant Bolshaya Udina Volcano

Mantle and crustal sources of magmatic activity of Klyuchevskoy and surrounding volcanoes in Kamchatka inferred from earthquake tomography

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