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Records: 26
Pages:  1 2 3
 O
Ozerov A. Gas-hydrodynamic model of basalt explosions (based on experimental data) // 33rd International Geological Congress. Oslo, Norway. Abstracts. 2008.
Ozerov A. Types and Mechanisms of Basaltic Explosions: Environmental Observations and Experimental Data // IAVCEI 2008 - General Assembly, Reykjavik, Iceland. Abstracts. 2008. P. 7
Ozerov A. Yu. Experimental modeling of the explosion mechanism of basaltic magmas // Petrology. 2009. V. 17. № 7. P. 653-668. doi:10.1134/S0869591109070029.
Ozerov A., Ispolatov I., Lees J. Modeling Strombolian eruptions of Karymsky volcano, Kamchatka, Russia // Journal of Volcanology and Geothermal Research. 2003. V. 122. № 3–4. P. 265 - 280. doi: 10.1016/S0377-0273(02)00506-1.    Annotation
A model is proposed to explain temporal patterns of activity in a class of periodically exploding Strombolian-type andesite volcanoes. These patterns include major events (explosions) which occur every 3–30 min and subsequent tremor with a typical period of 1 s. This two-periodic activity is thought to be caused by two distinct mechanisms of accumulation of the elastic energy in the moving magma column: compressibility of the magma in the conduit and viscoelastic response of the almost solid magma plug on the top. A release of the elastic energy occurs during a stick–slip dynamic phase transition in a boundary layer along the walls of the conduit; this phase transition is driven by the shear stress accumulated in the boundary layer. The intrinsic hysteresis of this first-order phase transition explains the long periods of inactivity in the explosion cycle. Temporal characteristics of the model are found to be qualitatively similar to the acoustic and seismic signals recorded at Karymsky volcano in Kamchatka.
Ozerov A., Lees J., Ispolatov J. Long and Short Term Periodic Activity at Karymsky Volcano // AGU Spring Meeting 1999. Eos Trans. AGU, xx (xx), Spring Meet. Suppl., Abstract. Boston, Massachusetts: AGU. 1999. P. V11D-09.
Ozerov A.Yu. A New Cluster Regime Of Gas-Liquid Flow In Vertical Columns (Physical Modeling) // Сборник тезисов Международной конференции «Потоки и Структуры в Жидкостях: Физика Геосфер». М.: ИПМех РАН. 2009. V. 1. P. 178-181.
Ozerov A.Yu. Cluster Regime – The New Regime Of Flowing Of Gas-Liquid Mixture In Vertical Columns (Based On Experimental Data) // 6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion. Xi’an, China, 11-15 July 2009. 2009. P. FG-30.
Ozerov A.Yu. Cluster Regime – The New Regime Of Flowing Of Gas-Liquid Mixture In Vertical Columns (Based On Experimental Data) // The 6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion. Xi’an, China, 11-15 July 2009. Melville, N.Y.: American Institute of Physics. 2010. V. 1207. P. 348-354.
Ozerov A.Yu. Evolution of basaltic melts within the feeding system of the Klyuchevskoy volcano // 32nd International Geological Congress. Florence, Italy. 2004, Abstracts. 2004. V. Part 1. P. 407
Ozerov A.Yu. Experimental Studies for Modeling the Explosions of Basaltic Volcanoes // Volcanism and Subduction: The Kamchatka Region. // AGU Fall Meeting 2007. Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstracts. 2007. P. V12B-04.





 

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