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 2010
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. Experimental modeling of the basaltic eruptions mechanism // International Conference Fluxes and Structures in Fluids: Physics of Geospheres – 2009, Selected Papers. 2010. P. 269-278.
Ozerov A.Yu. The mechanism of basaltic explosions: Experimental modeling // Journal of Volcanology and Seismology. 2010. V. 4. № 5. P. 295-309. doi: 10.1134/S0742046310050015.    Annotation
An instrument package for simulating basaltic eruptions (IPSBE) with a height of 18 m has been developed for investigating the processes that occur during Strombolian eruptions. The device follows the geometrical ratio between the actual plumbing system of a volcano, with the ratio of conduit diameter to conduit height being 1 to 1000. For the first time in physical modeling studies, we created conditions in which a moving gassaturated model liquid enters the conduit; this enabled us to study bubble nucleation, expansion, and coalescence, the generation and transformation of gas structures, and the kinetic features shown by the evolution of the gas phase. These experiments revealed a novel (previously unknown) flow pattern of two phase mixtures in a vertical column, viz., a cluster flow that involves the regular alternation of compact clusters of gas bubbles that are separated by a fluid that does not involve a free gas phase. It is shown that the liquid, bubble, cluster, and slug flow patterns are mutually transformed under certain conditions; they are polymorphous modifications of a gassaturated liquid moving in a vertical pipe. The data thus acquired suggested a new model for the gas–liquid movement of a magma melt in a conduit: depending on the type of gas–liquid flow behavior at the vent, the crater will exhibit different types of explosive activity, including actual explosions.
Rashidov V.A., Romanova I.M., Bondarenko V.I., Palueva A.A. Information technologies in geomagnetic investigations of Late Cenozoic Pacific submarine volcanoes // Russian Journal of Earth Sciences. 2010. V. 11. P. RE3001 doi:10.2205/2009ES000358.    Annotation
The original actual materials collected during the geomagnetic research on the research vessel "Vulkanolog" in 1977-1991 (19 volcanological expeditions) resulted in important contribution into the world data on the structure of Late Cenozoic Pacific submarine volcanoes.

The research resulted in a single method analysis of the anomalous magnetic field of submarine volcanoes and volcanic zones within the Kurile, Izu-Bonin, Mariana, Solomon and Kermadec arcs, New Guinean and South China peripheral seas and within the Socorro hot-spot.

It is stressed that the Late Cenozoic submarine volcanoes within the arcs show their presence distinctly in the anomalous magnetic field by local anomalies located within the edifices. Their amplitude may reach 3000 nT, and the horizontal gradient of the field may exceed 100 nT/km. The data interpretation of the hydromagnetic survey allowed distinguishing the internal structure of single submarine volcanoes, volcanic massifs and volcanic zones in various Pacific regions. The authors revealed the bodies forming anomalies within the isolated volcanic edifices and submarine volcanic zones. The 2.5D and 3D modeling resulted in the estimation of the body ages and the period of the submarine volcanic activity.

Besides the research resulted in estimation of the edifice volumes, scale of submarine volcanic activity and drew the conclusion on the evolution of certain volcanic massifs.

In order to classify and visualize the materials on the geomagnetic research we continue to create "Late Cenozoic Pacific submarine volcanoes" information system. Currently the information system includes:

The Internet page "Comparative analysis of the materials on geomagnetic research of various manifestation types of the Late Cenozoic submarine volcanism in the Pacific";
"Late Cenozoic Pacific submarine volcanoes" database;
GIS "Geomagnetic investigations of various appearance types of Late Cenozoic Pacific submarine volcano activity".
The web site http://www.kscnet.ru/ivs/grant/grant_04/index.html contains numerous maps of the anomalous magnetic field, bathymetric and structural maps, fragments of the echo- sounding survey records and continuous acoustic profiling, photos of land volcanoes, references of the Pacific submarine volcanic activity and "Catalogue on the Late Cenozoic Pacific submarine volcanoes" (in Russian).
The database on the Late Cenozoic Pacific submarine volcanoes includes location of submarine volcanoes, magnetic behaviors and chemical composition of dredge rocks and volumes of the volcanic edifices. The database is hosted on the IVS FEB RAS server and is available on the following page: http://www.kscnet.ru/ivs/volcanoes/submarine/.

The GIS contains maps of the anomalous magnetic field and the volcanic edifices relief.

"Late Cenozoic Pacific submarine volcanoes" information system provides researchers with the convenient tools for working with cartographic and attributive data and helps to implement a comprehensive data processing.
Shishkina T.A., Botcharnikov R.E., Holtz F., Almeev R.R., Portnyagin M.V. Solubility of H2O- and CO2-bearing fluids in tholeiitic basalts at pressures up to 500 MPa // Chemical Geology. 2010. V. 277. № 1–2. P. 115 - 125. doi: 10.1016/j.chemgeo.2010.07.014.    Annotation
The solubility of H2O- and CO2-bearing fluids in tholeiitic basalts has been investigated experimentally at temperature of 1250 °C and pressures of 50, 100, 200, 300, 400 and 500 MPa. The concentrations of dissolved H2O and CO2 have been determined using FTIR spectroscopy with an accurate calibration of the absorption coefficients for hydrogen- and carbon-bearing species using synthesized standards of the same tholeiitic composition. The absorption coefficients are 0.65 ± 0.08 and 0.69 ± 0.08 L/(mol cm) for molecular H2O and OH groups by Near-Infrared (NIR), respectively, and 68 ± 10 L/(mol cm) for bulk H2O by Mid-Infrared (MIR). The carbonate groups determined by MIR have an absorption coefficient of 317 ± 23 L/(mol cm) for the band at 1430 cm−1.The solubility of H2O in the melt in equilibrium with pure H2O fluid increases from about 2.3 ± 0.12 wt.% at 50 MPa to about 8.8 ± 0.16 wt.% at 500 MPa, whereas the concentration of CO2 increases from about 175 ± 15 to 3318 ± 276 ppm in the melts which were equilibrated with the most CO2-rich fluids (with mole fraction of CO2 in the fluid, XflCO2, from 0.70 to 0.95). In melts coexisting with H2O- and CO2-bearing fluids, the concentrations of dissolved H2O and CO2 in basaltic melt show a non-linear dependence on both total pressure and mole fraction of volatiles in the equilibrium fluid, which is in agreement with previous studies. A comparison of new experimental data with existing numerical solubility models for mixed H2O–CO2 fluids shows that the models do not adequately predict the solubility of volatiles in basaltic liquids at pressures above 200 MPa, in particular for CO2, implying that the models need to be recalibrated.

The experimental dataset presented in this study enables a quantitative interpretation of volatile concentrations in glass inclusions to evaluate the magma storage conditions and degassing paths of natural island arc basaltic systems. The experimental database covers the entire range of volatile compositions reported in the literature for natural melt inclusions in olivine from low- to mid-K basalts indicating that most melt inclusions were trapped or equilibrated at intermediate to shallow levels in magmatic systems (< 12–15 km).
Siebert L., Simkin T., Kimberly P. Volcanoes of the World. 2010. 568 p.    Annotation
This impressive scientific resource presents up-to-date information on ten thousand years of volcanic activity on Earth. In the decade and a half since the previous edition was published new studies have refined assessments of the ages of many volcanoes, and several thousand new eruptions have been documented. This edition updates the book's key components: a directory of volcanoes active during the Holocene; a chronology of eruptions over the past ten thousand years; a gazetteer of volcano names, synonyms, and subsidiary features; an extensive list of references; and an introduction placing these data in context. This edition also includes new photographs, data on the most common rock types forming each volcano, information on population densities near volcanoes, and other features, making it the most comprehensive source available on Earth's dynamic volcanism.
Torsvik T., Paris R., Didenkulova I., Pelinovsky E., Belousov A., Belousova M. Numerical simulation of a tsunami event during the 1996 volcanic eruption in Karymskoye lake, Kamchatka, Russia // Natural Hazards and Earth System Science. 2010. V. 10. № 11. P. 2359-2369. doi:10.5194/nhess-10-2359-2010.
Авдейко Г.П., Палуева А.А., Хлебородова О.А. Внутриплитные базальты и адакиты Восточной Камчатки: условия образования // Вестник КРАУНЦ. Серия: Науки о Земле. 2010. Вып. 16. № 2. С. 55-65.    Annotation
На основе анализа опубликованных данных по вещественному составу, геолого-структурным позициям, пространственному положению и возрасту щелочных и субщелочных базальтов восточно-камчатского вулканического пояса с внутриплитными геохимическими характеристиками предложена геодинамическая модель их образования. По этой модели щелочные базальты образовались в результате низкой степени парциального плавления мантийного плюма типа «andersonian». Этот мантийный плюм был сформирован в астеносфере под тихоокеанской плитой на расстоянии 400-500 км к востоку от курило-камчатского глубоководного желоба в результате флексурообразования, по аналогии с моделью (Hirano et al., 2006), а затем конвективным течением перемещен к вновь формирующейся зоне субдукции. Адакиты образовались путем плавления фронтальной части тихоокеанской плиты в начальный период субдукции на контакте с мантийным плюмом. Модель объясняет и короткий интервал времени формирования щелочных пород, и последовательную смену их субщелочными породами, адакитами, а затем типичными субдукционными известково-щелочными породами, и пространственное нахождение рассмотренных комплексов только в зоне перескока субдукции.

Geodynamic model of alkaline basaltoids with intraplate geochemical characteristics was developed on the base of systematization and analysis their space and time data in the East Kamchatka volcanic arc. The alkaline «intraplate» rocks in the East Kamchatka were formed as a result of partial melting at low degree of an «andersonian» type mantle plume. This mantle plume was generated in the astenosphere beneath the Pacific plate about 400-500 km from the deep sea trench similarly Hirano et al. (2006) flexure model and then was moved to the new forming East Kamchatka subduction zone by mantle convection. Adakites were produced by partial melting of the frontal part of the subducting Pacific plate in the initial stage of subduction. The model explains a short time of the formation of alkaline rocks, and their change by transitional rocks and adakites, and then by typical calk-alkaline rocks, and their position only in the subduction zone jump to the present-day position.
Викулин А.В., Акманова Д.Р., Осипова Н.А. Вулканизм как индикатор геодинамических процессов // Литосфера. 2010. № 3. С. 5-11.    Annotation
С целью выявления и изучения особенностей геодинамических процессов, авторами была составлена база, включающая в едином формате все известные данные о землетрясениях и извержениях вулканов планеты за последние 4.5 тыс. и 12 тыс. лет соответственно. С использованием этих данных показано, что энергетические (графики повторяемости) и пространственно-временные (скорости миграции) свойства распределения чисел землетрясений и извержений вулканов являются близкими, что позволяет вулканизм (как сейсмичность и тектонику) рассматривать как индикатор планетарного геодинамического процесса.
Гирина О.А. Конвективная гравитационная дифференциация пирокластики андезитовых вулканов // Литосфера. 2010. № 3. С. 135-144.    Annotation
Рассмотрены основные типы пирокластических пород, формирующихся при эксплозивных извержениях андезитовых вулканов. Показано, что их генезис обусловлен конвективной гравитационной дифференциацией пирокластической массы, движущейся по склону вулкана в процессе извержения.

The main types of pyroclastic rocks formed during explosive eruptions of andesitic volcanoes are presented in this work. It is shown that their genesis is due to convective gravitational differentiation of pyroclastic masses moving along slope of volcano during explosive eruption.





 

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