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Records: 2276
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On some theoretical problems of Volcanology (1958)
Gorshkov G.S. On some theoretical problems of Volcanology // Bulletin of Volcanology. 1958. V. 19. № 1. P. 103-114. doi: 10.1007/BF02596600.
On the Magma Chambers beneath Klyuchevskoi Volcano, Kamchatka (2018)
Khubunaya S.A., Gontovaya L.I., Sobolev A.V., Khubunaya V.S. On the Magma Chambers beneath Klyuchevskoi Volcano, Kamchatka // Journal of Volcanology and Seismology. 2018. V. 12. № 2. P. 14-30. doi: 10.1134/80742046318020045.    Annotation
AAbstract—Numerous summit and parasitic eruptions of moderate potassium magnesian and high-alumina basalts and basaltic andesites, their mineralogic and geochemical features, and the composition of in situ chilled melt inclusions in the olivine of cinder lapilli discharged by Klyuchevskoi Volcano all provide evidence of the presence of magma chambers beneath the volcano. This is also supported by a dualism in the variation of CaO and A1203 concentrations in olivine and clinopyroxene during crystallization. The mineralogic features in the high-alumina basalts that were discharged by all parasitic eruptions of Klyuchevskoi provide evidence of magnesian magma being emplaced from a deeper chamber into a shallow high-alumina chamber. The distribution of incoherent elements in the volcano's magnesian and aluminiferous rocks shows that they came from a single mantle source. The geochemical and mineralogic data are in good agreement with the results of geophysical surveys that concern the structure and properties of the lithosphere beneath Klyuchevskoi.

Многочисленные вершинные и побочные извержения умереннокалиевых магнезиальных и высокоглиноземистых базальтов и андезибазальтов, их минералогические и геохимические особенности, состав природнозакаленных расплавных включений в оливинах шлаковых лапилли вулкана Ключевской свидетельствуют о наличии магматических очагов под вулканом. На это же указывает, дуализм в изменении содержаний СаО и А1203 в оливинах и клинопироксенах во время кристаллизации. Минералогические особенности высокоглиноземистых андезибазальтов, всех побочных извержений вулкана Ключевской свидетельствуют о внедрении магнезиальной магмы из глубинного очага в малоглубинную высокоглиноземистую камеру. Распределение некогерентных элементов в магнезиальных и глиноземистых породах вулкана указывает на их генезис из одного мантийного источника. Геохимические и минералогические данные находятся в хорошем соответствии с результатами геофизических исследований структуры и свойств литосферы под вулканом Ключевской.
On the Relation of Volcanism and the Upper Mantle (1965)
Gorshkov G.S. On the Relation of Volcanism and the Upper Mantle // Bulletin Volcanologique. 1965. V. 28. P. 159-167.
On the Relationships of Water-Level Variations in the E-1 Well, Kamchatka to the 2008–2009 Resumption of Activity on Koryakskii Volcano and to Large (M ≥ 5) Earthquakes (2012)
Kopylova G.N., Boldina S.V. On the Relationships of Water-Level Variations in the E-1 Well, Kamchatka to the 2008–2009 Resumption of Activity on Koryakskii Volcano and to Large (M ≥ 5) Earthquakes // Journal of Volcanology and Seismology. 2012. V. 6. № 5. P. 312-328. doi: 10.1134/S074204631205003X.    Annotation
Abstract—We discuss the water!level variations in the E!1 well for the time period between May 2006 and
2010, inclusive. A trend towards an increasing level at an abnormally high rate occurred from mid!2006 to
December 2009. This increase is regarded as the response of the aquifer of gas!saturated ground water that
exists in the volcanogenic–sedimentary deposits of the Avacha volcano!tectonic depression to volumetric
strain changes during the precursory period and the occurrence of a swarm of small earthquakes ( = 8.3)
in the area of Koryakskii Volcano and to its phreatic eruption. We estimated the volumetric compression as
Δε = –(4.1 × 10–6–1.5 × 10–5) from the amplitude of water!level rise using the elastic parameters of the wa!
ter!saturated rocks. While the strain source was active, we observed a decreasing sensitivity of the hydrologic
regime in the well to the precursory processes before large (M ≥ 5.0) tectonic earthquakes.
On the classification and terminology of Pelee and Katmai type eruptions (1962)
Gorshkov G.S. On the classification and terminology of Pelee and Katmai type eruptions // Bulletin of Volcanology. 1962. V. 24. P. 155-165.
On the origin of ignimbrites in relation to the study of recent eruptions (1963)
Gorshkov G.S. On the origin of ignimbrites in relation to the study of recent eruptions // Bulletin of Volcanology. 1963. V. 25. P. 33-37.
On the petrochemistry of volcanic rocks in connection with the formation of island arcs (1961)
Gorshkov G.S. On the petrochemistry of volcanic rocks in connection with the formation of island arcs // Publ. du Bureau Central Sasmol Intern. 1961. V. A. № 22.
On the possibility of using heat stored in the magma chamber of the Avachinsky volcano and the surrounding rock for heat and power supply (2007)
Fedotov S.A., Sugrobov V.M., Utkin I.S., Utkina L.I. On the possibility of using heat stored in the magma chamber of the Avachinsky volcano and the surrounding rock for heat and power supply // Journal of Volcanology and Seismology. 2007. V. 1. № 1. P. 28-41. doi:10.1134/S0742046307010022.    Annotation
The results of geological and geophysical studies, including recent ones, which make it possible to verify the existence of a liquid magma chamber below the Avachinsky volcano on Kamchatka, and to estimate the chamber depth and approximate dimensions, are analyzed. The heat stored in the host rock heated by the volcanic magma chamber from the time of chamber origination to the present is estimated, taking variable chamber dimensions during the process of evolution into account. The geological-geophysical prerequisites for using the thermal energy of the heated rock which surrounds the magma chamber to supply heat and power to Petropavlovsk-Kamchatskii are analyzed. The creation of an underground geothermal circulation system (fracture heat exchanger) using deep boreholes is proposed.
On the relation between seismic and volcanic phenomena and the energy balance of the Bezymianny volcano eruption (1963)
Gorshkov G.S. On the relation between seismic and volcanic phenomena and the energy balance of the Bezymianny volcano eruption // Proc. 9th Pacific Sci. Congr. 1963. V. 12.
Operative remote sensing monitoring of Kamchatkan volcanoes using the information system VolSatView (2015)
Girina O.A., Lupian E.A., Sorokin A.A., Melnikov D.V., Manevich A.G. Operative remote sensing monitoring of Kamchatkan volcanoes using the information system VolSatView // 7th International Workshop on Volcanic Ash (IWVA/7), 19-23 October 2015. IWVA/7. 2015. P. 1-26.    Annotation
There are 30 active volcanoes in the Kamchatka, and several of them are continuously active. In 2014-2015, four of the Kamchatkan volcanoes (Sheveluch, Klyuchevskoy, Karymsky and Zhupanovsky) had strong and moderate explosive eruptions.
Strong explosive eruption of volcanoes is the most dangerous for aircraft because in a few hours or days in the atmosphere and the stratosphere can produce about several cubic kilometers of volcanic ash and aerosols. Ash plumes and the clouds, depending on the power of the eruption, the strength and wind speed, can travel thousands of kilometers from the volcano for several days, remaining hazardous to aircraft, as the melting temperature of small particles of ash below the operating temperature of jet engines.
Annual Kamchatkan strong explosive eruptions with ash emissions by 8-15 km above sea level represent a real threat to modern jet aviation. To reduce the risk of aircraft encounters with volcanic ash clouds in the North Pacific region, since 2002, KVERT IVS FEB RAS conduct a daily satellite monitoring of 30 Kamchatkan volcanoes and visual and video monitoring of Klyuchevskoy, Sheveluch, Bezymianny, Koryaksky, Avachinsky, Mutnovsky and Gorely volcanoes. KVERT analyses seismic data for 9 volcanoes (Klyuchevskoy, Sheveluch, Bezymianny, Tolbachik, Kizimen, Karymsky, Koryaksky, Avachinsky and Gorely) from the Kamchatkan Branch of Geophysical Survey RAS.
KVERT send Volcano Observatory Notice for Aviation (VONA) by email to Airport Meteorological Center (AMC) at Yelizovo Airport; and the Tokyo Volcanic Ash Advisory Centers (VAAC), the Anchorage VAAC, the Washington VAAC, the Montreal VAAC, and the Darwin VAAC; aviation services, and scientists located throughout the North Pacific region. VONA/KVERT Releases are posted on the web site: http://www.kscnet.ru/ivs/kvert/
Since 2011, experts from IVS FEB RAS, Space Research Institute RAS, Computing Center FEB RAS and the Far Eastern Planeta Research Center have operated the information system “Monitoring of Volcanoes Activity in Kamchatka and the Kuriles” (VolSatView; http://volcanoes.smislab.ru) that uses all available satellite data (operative and long-term archive data), weather and on-ground observations, the results of computational modeling of ash clouds and plumes trajectories to ensure continues monitoring and study of volcanic activity in Kamchatka and the Kuriles.



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