The maindirections of the investigations of the Laboratory of volcanology and volcanic danger:

Reconstruction of eruptive activity of active volcanoes of the Kurile Islands and the main stages of geological development in Late Pleistocene-Holocene. Productivity of volcanic edifices during time periods and intensity of magmatic matter output. Creation of regional geochronological scale of catastrophicevents in Holocene. 

The strongest caldera-forming eruptions in the Kurile Islands in Late Pleistocene-Holocene (typology, age, petrologo-geochemical particularities, history of development, influence to environment)

Typology, conditions of formation, geochemical particularities of thermal waters and solfataric gases of Sakhalin and the Kurile Islands.

Study of morphology, genesis and modern activity of calderal reservoirs of the Kurile Islands by the methods of echo- and infrasound surveys.

Monitoring of volcanic activity in the Kurile Islands on the base of methods of distance satellite sounding. Creation of the catalogue of volcanic eruptions.

Creation of the systems of telemetry of data transmission by foreshocks of volcanic eruptions

Reconstruction of geodynamical conditions of formation of structural elements of Late Mesozoic- Early Cenozoic East-Sakhalin Island arc system by geological and petrochemical data.

Study of particularities of structure and development of Cenozoic sedimentary basins of the Okhotsk Sea region formed in the composition of pacific continental margin or zone of continent-ocean transition

Determination of composition and geodynamic conditions of formation of erupted rocks of terrains of the East-Sakhalin folding system.

Основные научные результаты лаборатории последних лет и основные публикации  сотрудников лаборатории.

1. The evaluation of the possibility of distance monitoring of volcanic eruptions on the base of satellite sounding data (MODIS, NOAA, MTSAT) and the net of surface infrasound stations (IMS) was conducted by the example of Sarychev Peak volcano eruption (the Kurile Islands). It was shown that satellite data are the most effective for the revealing of thermal anomalies as foreruns of the eruptions, monitoring of the dynamics of ash clouds stretching and qualitative evaluation of aerosol composition. Data of infrasound stations have higher resolution ability for fixation of eruptive events. The combination of these methods gives wide possibilities for operative monitoring of volcanic activity of almost inaccessible territories with rare cover by seismic stations (Fig.1)

Rybin A., Chibisova M.,Webley P., Steensen T., Izbekov P., Neal C., Realmuto V. Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles // Bulletin of Volcanology, 2011. Vol. 73. № 9. P. 1377-1392.

Matoza R.S., Pichon A.L., Vergoz J., Herry P., Lalande J., lee H., Che I., Rybin A. Infrasonic observations of the June 2009 Sarychev Peak eruption, Kuril Islands: Implications for infrasonic monitoring of remote explosive volcanism // Journal of Volcanology and Geothermal Research. 2011. Vol. 200. P. 35-48.

Rybin A.V., Chibisova M.V., Koroteev I.G. The Problems of monitoring of volcanic activity in the Kuril Islands // Vestnik FEB RAS, 2010. № 3. P. 64-72.

 

2.  The first detailed paleovolcanological works directed to reconstruction of eruptive history of active and potentially active volcanoes of the Central and Southern Kurile Islands were conducted. Sarychev Peak volcano (Matua Isl.) being one of the most active volcanoes of the Kurile Island arc was studied in more details. Volcano activity in Holocene was characterized by rather large volume of precision data on geochronology (radiocarbon dating) and geochemistry (gross composition, micro and rare earth elements) (Рис.2)

 

Degterev A.V., Rybin A.V., Melekestsev I.V., Razzhigaeva N.G. Explosive eruptions of Sarychev Peak volcano in Holocene (Matua Isl., the Kurile Islands): geochemistry of tephra // Tikhookeanskaya Geology, 2012. V. 31. № 6. P. 16-26.

Degterev A.V. Pyroclastic deposits of the eruption of Sarychev Peak volcano (Matua Isl.) in June 2009 // Volcanology  and seismology. 2011. №4. P. 1-9.

Degterev A.V. Holocene tephra of Matua Island (the Central Kurile Islands): identification and composition of transit ashes // Vestnik FEB RAS, 2013. №3. P. 32-39.

3. The stages of development of the landscapes of Simushir Isl. during Middle – Late Holocene were picked out, the boundaries of their reconstruction were determined. The influence of climate changes and volcanic eruptions to development of natural components of the environment was shown. The received results are based on spore- pollen and diatomic analysis of buried soils and peat bog of different parts of the island. The age fixing was conducted on the base of radiocarbon dating and data of tephrochronology.  (рис. 3_1)

 

Razzhigaeva N.G., Ganzey L.A., Belyanina N.I., Grebennikova T.A., Arslanov H.A.,  Pshenichnikova N.F., Rybin A.V. The role of climate and volcanogenic factors in formation of organogennic depositions and development of the landscapes of Simushir Isl. (the Central Kurile Islands) in Middle – Late Holocene // Tikhookeanskaya Geology, 2013. V. 32. № 3. P. 66-78.

4. The materials were prepared for creating of data base on composition and structure of raw of thermal manifestations of Kunashir Island. The complex of geomorphological works directed to investigation of flooding volcanic crater and caldera depressions of the Kuril Islands was fulfilled with the help of methods of echo-sounding bathymetrical survey with satellite fixing on profile. Data about morphological structure of basins were generalized; the special typology of crater lakes of the Kurile Islands was suggested. Distance research of thermal manifestations was conducted with the help of infrared camera in Iturup Island, in some places the autonomic devices of  study of long variations of temperature were placed.  (Рис.4_1, 4_2)

Kozlov D.N., Zharkov P.V. Heat-vision survey of active volcanoes of the Kuril Islands in 2009-2011 // Vestnik KRAUNC. Earth Sciences, 2012. № 1. Issue № 19. P. 231-239.

Kozlov D.N., Zharkov P.V. Heat-vision analysis of eruptive activity of Ekarma volcano in 2010 year // Tikhookeanskaya Geology. 2012. V. 31. № 6. P. 27-30.

Kozlov D.N., Rashidov V.A., Koroteev I.G. The morphology of Broutona Bay (Simushir Isl., the Kuril Islands) // Vestnik KRAUNC. Earth Sciences, 2012. № 2.  Issue № 20. P. 71-77.

 

5. It was established that geological structure of Sakhalin Island and bottom of adjacent water territories was formed during the process of forming and developing of Early Cretaceous, Early-Late cretaceous-Paleogene and Cenozoic continental margins, accompanied with subduction, accretion, and collision, magmatic, metamorphic and sedimentary processes characteristic for continental margins. The structural elements of East-Sakhalin island-arc system were characterized, and also the Okhotsk sea collision sutura and the Okhotsk sea microcontinent. Petrochemical features and geodynamic conditions of the formation of igneous rocks and structural elements of the system were determined. It was established that displacement tectonics, rift genesis, fluid plum-tectonics, avalanching sedimentation and active tectonomagmatic regime played an important role in formation of Cenozoic oil-gas bearing sedimentary basins of the Okhotsk sea region. It was determined that the formation of Cenozoic oil-gas bearing sedimentary basins of the Okhotsk sea region and dislocations of deposits were connected with the development of North-Okhotsk, Tan-Lu-Okhotsk, Hokkaido-Sakhalin, Okhotsk sea-West-Kamchatka, Yuzhno-Kurilsk displacement-widening systems. Diapirs of astenosphere which controlled rift genesis, magmatism and thermal regime are considered a deep cause of rift genesis.  (Рис.5_1, 5_2)

Grannik V.M., Litvinova A.V., Rudnitskaya E.S., Kim A.H. Cenozoic sedimentary basins of the Okhotsk sea region: peculiarities of structure and formation // Pacific geology, 2013. V. 32. № 2. P. 20-28.

Grannik V.M. East-Sakhalin island-arc system of the Okhotsk sea region // Lithosphere, 2013. № 1. P. 36-51.

Grannik V.M. Igneous rocks of Central-Sakhalin collision sutura (Sakhalin Isl.) // DAN, 2012. V. 446, № 4. P. 423-426.

Grannik V.M. Igneous rocks of accretion and accretion –collision complexes of Tonino-Anivskii peninsular (Sakhalin Isl.) // DAN, 2012. V. 447, № 6. P. 648-652.

6. New data were received about explosive eruption of Ivan Grozny volcano in 2012, 2013 (Iturup Isl., the Kuril Islands).  All the episodes of eruptive activity were reconstructed by data of visual and satellite observations. Infrared survey of the volcano was conducted; it allowed to obtain data about the state of the volcano and localize thermal anomalies. The analysis of volcanic ashes composition gives the base to suggest that the last eruptions were phreatic-magmatic and distinguished from the events of activity increasing in 1989, the ashes of which were presented by resurgent pyroclastic. (Рис. 15_1)

Zharkov P.V., Kozlov D.N. Explosive eruption of Ivan Grozny volcano in 2012-2013  ( Iturup Island, the Kurile Islands) // Vestnik FEB RAS, 2013. №3. P. 39-44.

7.  New data about modern state and history of eruptive activity of insufficiently known Ekarma volcano were received (the Northern Kurile Islands). The reconstruction of volcanic activity during the last 5 thousand years was conducted on the base of geologo-volcanological and tephra-chronological researches. Four episodes of higher activity were picked out, each of them included 2-5 eruptions, and time periods among them did not exceed 130-140 years. Complex analysis of received data and historical events (the last strong eruption occurred 211 years ago) allows to assume the strong eruption of this volcano at the nearest years.  (Рис.16_1)

Rybin A.V., Degterev A.V., Kravchunovskaya E.A., Chibisova M.V., Neroda A.S., Melekestsev I.V., Razzhigaeva N.G., Chashchin A.A., Chirkov S.A., Koroteev I.G., Arslanov H.A. Weak phreatic eruption of Ekarma volcano (the Kurile Islands) in June 2010 as possible forerun of its future strong magmatic eruption// Volcanology and seismology, 2012. №5. P. 13-24.