Volcanic edifice stability during cryptodome intrusion (2001)
Donnadieu Franck, Merle Olivier, Besson Jean-Claude Volcanic edifice stability during cryptodome intrusion // Bulletin of Volcanology. 2001. Т. 63. № 1. С. 61-72. doi:10.1007/s004450000122.
Limit equilibrium analyses were applied to the 1980 Mount St. Helens and 1956 Bezymianny failures in order to examine the influence on stability of structural deformation produced by cryptodome emplacement. Weakening structures associated with the cryptodome include outward-dipping normal faults bounding a summit graben and a flat shear zone at the base of the bulged flank generated by lateral push of the magma. Together with the head of the magmatic body itself, these structures serve directly to localize failure along a critical surface with low stability deep within the interior of the edifice. This critical surface, with the safety coefficient reduced by 25–30%, is then very sensitive to stability condition variation, in particular to the pore-pressure ratio (ru) and seismicity coefficient (n). For ru=0.3, or n=0.2, the deep surface suffers catastrophic failure, removing a large volume of the edifice flank. In the case of Mount St. Helens, failure occurred within a material with angle of friction ~40°, cohesion in the range 105–106 Pa, and probably significant water pore pressure. On 18 May 1980, detachment of slide block I occurred along a newly formed rupture surface passing through the crest of the bulge. Although sliding of block I may have been helped by the basal shear zone, significant pore pressure and a triggering earthquake were required (ru=0.3 and n=0.2). Detachment of the second block was guided by the summit normal fault, the front of the cryptodome, and the basal shear zone. This occurred along a deep critical surface, which was on the verge of failure even before the 18 May 1980 earthquake. The stability of equivalent surfaces at Bezymianny Volcano appears significantly higher. Thus, although magma had already reached the surface, weaker materials, or higher pore pressure and/or seismic conditions were probably required to reach the rupture threshold. From our analysis, we find that deep-seated sector collapses formed by removing the edifice summit cannot generally result from a single slide. Cryptodome-induced deformation does, however, provide a deep potential slip surface. As previously thought, it may assist deep-seated sector collapse because it favors multiple retrogressive slides. This leads to explosive depressurization of the magmatic and hydrothermal systems, which undermines the edifice summit and produces secondary collapses and explosive blasts.
Volcanic eruptions and seismic activity at Klyuchevskoi, Bezymiannyi and Shiveluch in 1986-1987 (1991)
Zharinov N.A., Gorelchik V.I., Belousov A.B., Belousova M.G., Garbuzova V.T., Demyanchuk Yu.V., Zhdanova E.Yu. Volcanic eruptions and seismic activity at Klyuchevskoi, Bezymiannyi and Shiveluch in 1986-1987 // Volcanology and Seismology. 1991. V. 12. V. 3. P. 327-345.
Volcanic structure and composition of Old Shiveluch volcano, Kamchatka (2013)
Gorbach Natalia, Portnyagin Maxim, Tembrel Igor Volcanic structure and composition of Old Shiveluch volcano, Kamchatka // Journal of Volcanology and Geothermal Research. 2013. V. 263. P. 193-208. doi:10.1016/j.jvolgeores.2012.12.012.
Volcanic tsunami: a review of source mechanisms, past events and hazards in Southeast Asia (Indonesia, Philippines, Papua New Guinea) (2014)
Paris Raphaël, Switzer Adam D., Belousova Marina, Belousov Alexander, Ontowirjo Budianto, Whelley Patrick L., Ulvrova Martina Volcanic tsunami: a review of source mechanisms, past events and hazards in Southeast Asia (Indonesia, Philippines, Papua New Guinea) // Natural Hazards. 2014. V. 70. № 1. P. 447-470. doi:10.1007/s11069-013-0822-8.
Gorshkov G.S. Volcanic zone of the Kurile Islands // Proc. 9th Pacific Sci. Congr. 1961. V. 12.
Volcanic-hydrothermal system of Baransky volcano, Iturup,
Kurile islands (1995)
Taran Yuri, Yurova L.M. Volcanic-hydrothermal system of Baransky volcano, Iturup,
Kurile islands // IUGG XXI General Assembley. 1995. P. VA41C - 6.
Volcaniclastic stratigraphy of Gede Volcano, West Java, Indonesia: How it erupted and when (2015)
Belousov Alexander, Belousova Marina, Krimer D., Costa F., Prambada O., Zaennudin A. Volcaniclastic stratigraphy of Gede Volcano, West Java, Indonesia: How it erupted and when // Journal of Volcanology and Geothermal Research. 2015. V. 301. P. 238-252.
Volcanism and the Upper Mantle: Investigations in the Kurile Island Arc (1970)
Gorshkov G.S. Volcanism and the Upper Mantle: Investigations in the Kurile Island Arc. 1970. 385 p. № 10.1007/978-1-4684-1767-8.
The present volume seems to me to be a particularly im portant one for several reasons. Not least among these is the fact that it summarizes the work of two decades by G. S. Gorshkov, one of the world's leading volcanologists. In addition, it is the first general work of this length on the volcanism of what might be called a "narrow" island arc, a relatively simple megastructure as com pared with the "wide" arcs such as Japan and Indonesia. Finally, in this volume Gorshkov has summarized and cited extensive evi dence for his general ideas on the relation between volcanism and the earth's crust and mantle. A few potentially troublesome items should be noted here. In the translation the Russian terms "suite" and "series" have been retained, though for American readers these might better have been translated as "formation" and "group. " In almost all cases Russian place names have simply been transliterated rather than translated (e. g. , "Yuzhnyi Isthmus" rather than "South Isthmus"); in a few cases the English equivalent has been given in brackets where this is essential to the understanding of the author's com ments. The adjectives have retained their Russian case endings in the process (masculine -yi or -ii, feminine -aya or -'ya, neuter -oe) and this may occasionally lead to some slight confusion, for example, when the author calls a given feature Severnyi Volcano at one point and Severnaya Mountain at another.
Volcano monitoring and alert system in Kamchatka and Northern Kuriles (2010)
Girina O.A. Volcano monitoring and alert system in Kamchatka and Northern Kuriles // International Workshop on Progress of Research for Disaster Mitigation of Earthquakes and Volcanic Eruptions in the North Pacific Region. ISTC. Sapporo, Japan. May 10-13, 2010. Sapporo, Japan: Hokkaido University. 2010. P. 65-69.
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