Geophysical research: article

Model of pyroclastic flow surface subsidence: Shiveluch volcano (Kamchatka), eruption on 29.08.2019
M.S. Volkova
V.O. Mikhailov
Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Journal: Geophysical research
Tome: 23
Number: 2
Year: 2022
Pages: 73-85
UDK: 550.31
DOI: 10.21455/gr2022.2-5
Full text
Keywords: pyroclastic flow, Shiveluch volcano, SAR interferometry, Sentinel-1A, thermomechanical model, flow surface subsidence.
Аnnotation: Possible reasons for the subsidence of the pyroclastic flow surface formed on the slopes of the Shiveluch volcano (Kamchatka) during the eruption of August 29, 2019 are studied. According to SAR interferometry data from the series of images of the European Space Agency Sentinel-1A satellite for the periods of 05–10.2020 and 05–10.2021 maps of displacement velocities of the volcano surface were constructed. An area with large subsidence was found, coinciding with the pyroclastic flow area on the southeastern slope. The maximum subsidence rates were 385 mm/year in 2020 and 257 mm/year in 2021. The thickness of pyroclastic deposits was estimated from radar images for 2020. The dependence of the sedimentation rate on the flow thickness at a sufficiently high correlation coefficient (–0.69) has a significant spread. A thermomechanical model has been constructed, which takes into account the compaction of deposits due to the changes in their porosity and density over time. According to the model, to explain the dependence of the flow surface subsidence rate on the rock thickness, it is sufficient to assume that, in addition to subsidence, when the flow cools, a slight change in porosity occurs, which, depending on the initial temperature of the flow, ranged from 1.5 to 1.7 % for the period from 2019 to 2021. The spread in the dependence “subsidence rate – flow thickness” is explained by the processes of erosion of pyroclastic deposits.
Bibliography: Berardino P., Fornaro G., Lanari R., Sansosti E., A new algorithm for surface deformation mon-itoring based on Small Baseline Differential SAR Interferograms, IEEE Transactions on Geoscience and Remote Sensing, 2002, vol. 40, no. 11, pp. 2375-2383.

Dirksen O., Humphreys M.C.S., Pletchov P., Melnik O., Demyanchuk Y., Sparks R.S.J., Mahony S., The 2001–2004 dome-forming eruption of Shiveluch volcano, Kamchatka: Observation, petrological investigation and numerical modelling, Journal of Volcanology and Geothermal Research, 2006, vol. 155, iss. 3–4, pp. 201-226, ISSN 0377-0273.

Ferretti A., Prati C., Rocca F., Permanent scatterers in SAR interferometry, IEEE Transactions on geoscience and remote sensing, 2001, v. 39, no. 1, pp. 8-20.

Ferretti A., Satellite InSAR Data Reservoir Monitoring from Space, EAGE Publication bv, 2014, 160 p. ISBN 978-90-73834-71-2

Girina O.A., Piroklasticheskie otlozheniya sovremennykh izverzhenii andezitovykh vulkanov Kamchatki i ikh inzhenerno-geologicheskie osobennosti (Pyroclastic deposits of modern eruptions of andesitic volcanoes of Kamchatka and their engineering-geological features), Vladivostok: Dal'nauka, 1998, 174 p. [In Russian].

Girina O.A., Manevich A.G., Mel'nikov D.V., Nuzhdaev A.A., Lupyan E.A., Activity of volcanoes of Kamchatka and the Kuril Islands in 2019 and their danger to aviation, in Vulkanizm i svyazannye s nim protsessy: Materialy XXIII ezhegodnoi nauchnoi konferentsii, posvyashchennoi Dnyu vulkanologa (Volcanism and related processes: Proceedings of the XXIII Annual Scientific Conference dedicated to the Volcanologist Day), Petropavlovsk-Kamchatskii: IViS DVO RAN, 2020, pp. 11-14. [In Russian].

Goltz A.E., Krawczynski M.J., Gavrilenko M., Gorbach N.V., Ruprecht Ph., Evidence for superhydrous primitive arc magmas from mafic enclaves at Shiveluch volcano, Kamchatka, Contrib Mineral Petrol., 2020, vol. 175, no. 115, pp. 1-26.

Gorbach N.V., Portnyagin M.V., Geology and petrology of the lava complex of Young Shiveluch volcano (Kamchatka), Petrology, 2011, vol. 19, no. 2, pp. 134-166.

Ji L., Lu Z., Dzurisin D., Senyukov S., Pre-eruption deformation caused by dike intrusion beneath Kizimen volcano, Kamchatka, Russia, observed by InSAR, Journal of Volcanology and Geothermal Research, 2013, vol. 256, pp. 87-95.

Ji L., Izbekov P., Senyukov S., Lu Z., Deformation patterns, magma supply, and magma storage at Karymsky Volcanic Center, Kamchatka, Russia, 2000–2010, revealed by InSAR, Journal of Volcanology and Geo thermal Research, 2018, vol. 352, pp. 106-116.

Lundgren P., Lu Z., Inflation model of Uzon caldera, Kamchatka, constrained by satellite radar interferometry observations, Geophysical Research Letters, 2006, vol. 33, L06301. doi: 10.1029/2005GL025181

Lundgren P., Kiryukhin A., Milillo P., Samsonov S., Dike model for the 2012–2013 Tolbachik eruption constrained by satellite radar interferometry observations, Journal of Volcanology and Geothermal Research, 2015, vol. 307, pp. 79-88.

Malyshev A.I., Zhizn' vulkana (Volkano life), Ekaterinburg: UrO RAN, 2000, 260 p. [In Russian].

Mania R., Walter T.R., Belousova M., Belousov A., Senyukov S.L., Deformations and morphology changes associated with the 2016–2017 eruption sequence at Bezymianny Volcano, Kamchatka, Remote Sensing, 2019, vol. 11, iss. 1278, 23 p.

Mikhailov V.O., Volkova M.S., Timoshkina E.P., Shapiro N.M., Babayantz I.P., Dmitriev P.N., Khairetdinov S.A., Analysis of displacements of the lava flow surface of the 2012–2013 Tolbachik fissure eruption by SAR interferometry, Geofizicheskie issledovaniya (Geophysical Research), 2020, vol. 21, no. 4, pp. 21-34. [In Russian].

Mikhailov V.O., Volkova M.S., Timoshkina E.P., Shapiro N.M., Smirnov V.B., On the Connection between the Koryaksky Volcano Activation in 2008–2009 and the Underlying Magmatic Processes, Izvestiya, Physics of the Solid Earth, 2021, vol. 57, no. 6, pp. 819-824. doi: 10.1134/S1069351321060045

Ozerov A.Y., Girina O.A., Zharinov N.A., Belousov A.B., Demyanchuk Y.V., Eruptions in the northern group of volcanoes, in Kamchatka, during the early 21st century, Journal of Volcanology and Seismology, 2020, vol. 14, no. 1, pp. 1-17. DOI: 10.1134/S0742046320010054

Senyukov S.L., Mikhailov V.O., Nuzhdina I.N., Kiseleva E.A., Droznina S.Ya., Timofeeva V.A., Volkova M.S., Shapiro N.M., Kozhevnikova T.Yu., Nazarova Z.A., Sobolevskaya O.V., A Joint Study of Seismicity and SAR Interferometry Observations for Assessing the Possibility of an Eruption of the Dormant Bolshaya Udina Volcano, Journal of Volcanology and Seismology, 2020, vol. 14, no. 5, pp. 305-317. DOI: 10.1134/S074204632005005X

Shevchenko A.V., Dvigalo V.N., Zorn E.U., Vassileva M.S., Massimetti F., Walter T.R., Svirid I.Y., Chirkov S.A., Ozerov A.Y., Tsvetkov V.A., Borisov I.A., Constructive and Destructive Processes During the 2018–2019 Eruption Episode at Shiveluch Volcano, Kamchatka, Studied from Satellite and Aerial Data, Front. Earth Sci., 2021, vol. 9, iss. 680051. doi: 10.3389/feart.2021.680051

Sidorov A.M., Duchkov A.D., Mekhanizmy teploperenosa v gornykh porodakh (Heat transfer mechanisms in rocks), Novosibirsk: Nauka, 1989, 96 p. [In Russian].