Research output: Contribution to journal › Article › peer-review
Three different types of plumbing system beneath the neighboring active volcanoes of Tolbachik, Bezymianny, and Klyuchevskoy in Kamchatka. / Koulakov, Ivan; Abkadyrov, Ilyas; Al Arifi, Nassir et al.
In: Journal of Geophysical Research: Solid Earth, Vol. 122, No. 5, 01.05.2017, p. 3852-3874.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Three different types of plumbing system beneath the neighboring active volcanoes of Tolbachik, Bezymianny, and Klyuchevskoy in Kamchatka
AU - Koulakov, Ivan
AU - Abkadyrov, Ilyas
AU - Al Arifi, Nassir
AU - Deev, Evgeny
AU - Droznina, Svetlana
AU - Gordeev, Evgeny I.
AU - Jakovlev, Andrey
AU - El Khrepy, Sami
AU - Kulakov, Roman I.
AU - Kugaenko, Yulia
AU - Novgorodova, Anzhelika
AU - Senyukov, Sergey
AU - Shapiro, Nikolay
AU - Stupina, Tatyana
AU - West, Michael
PY - 2017/5/1
Y1 - 2017/5/1
N2 - The Klyuchevskoy group of volcanoes (KGV) in Kamchatka includes three presently active volcanoes (Klyuchevskoy, Bezymianny, and Tolbachik) located close together in an area of approximately 50 × 80 km. These three volcanoes have completely different compositions and eruption styles from each other. We have analyzed new data recorded by a temporary seismic network consisting of 22 seismic stations operated within the area of Tolbachik in 2014–2015 in conjunction with the data from the permanent network and the temporary PIRE network deployed at the Bezymianny volcano in 2009. The arrival times of the P and S waves were inverted using a local earthquake tomography algorithm to derive 3-D seismic models of the crust beneath the KGV as well as accurate seismicity locations. High-resolution structures beneath the Tolbachik volcanic complex were identified for the first time in this study. The tomography results reveal three different types of feeding system for the main KGV volcanoes. The basaltic lavas of the Klyuchevskoy volcano are supplied directly from a reservoir at a depth of 25–30 km through a nearly vertical pipe-shaped conduit. The explosive Bezymianny volcano is fed through a dispersed system of crustal reservoirs where a lighter felsic material separates from the mafic component and ascends to the upper crust to form andesitic magma sources. For Tolbachik, low-viscosity volatile-saturated basalts ascend from two deep reservoirs following a system of fractures in the crust associated with the intersections of regional faults.
AB - The Klyuchevskoy group of volcanoes (KGV) in Kamchatka includes three presently active volcanoes (Klyuchevskoy, Bezymianny, and Tolbachik) located close together in an area of approximately 50 × 80 km. These three volcanoes have completely different compositions and eruption styles from each other. We have analyzed new data recorded by a temporary seismic network consisting of 22 seismic stations operated within the area of Tolbachik in 2014–2015 in conjunction with the data from the permanent network and the temporary PIRE network deployed at the Bezymianny volcano in 2009. The arrival times of the P and S waves were inverted using a local earthquake tomography algorithm to derive 3-D seismic models of the crust beneath the KGV as well as accurate seismicity locations. High-resolution structures beneath the Tolbachik volcanic complex were identified for the first time in this study. The tomography results reveal three different types of feeding system for the main KGV volcanoes. The basaltic lavas of the Klyuchevskoy volcano are supplied directly from a reservoir at a depth of 25–30 km through a nearly vertical pipe-shaped conduit. The explosive Bezymianny volcano is fed through a dispersed system of crustal reservoirs where a lighter felsic material separates from the mafic component and ascends to the upper crust to form andesitic magma sources. For Tolbachik, low-viscosity volatile-saturated basalts ascend from two deep reservoirs following a system of fractures in the crust associated with the intersections of regional faults.
KW - Bezymianny
KW - Klyuchevskoy volcano group
KW - magma plumbing system
KW - seismic tomography
KW - Tolbachik
KW - SUBDUCTION ZONES
KW - MANTLE WEDGE
KW - ALGORITHM
KW - PENINSULA
KW - SLABS
KW - DYNAMICS
KW - MAGMA
KW - LITHOSPHERE
KW - SEISMIC TOMOGRAPHY
KW - VELOCITIES
UR - http://www.scopus.com/inward/record.url?scp=85019958697&partnerID=8YFLogxK
U2 - 10.1002/2017JB014082
DO - 10.1002/2017JB014082
M3 - Article
AN - SCOPUS:85019958697
VL - 122
SP - 3852
EP - 3874
JO - Journal of Geophysical Research: Solid Earth
JF - Journal of Geophysical Research: Solid Earth
SN - 2169-9313
IS - 5
ER -
ID: 10188989