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Volume 54 Supplement 3

Special Issue: Satsuma-Iwojima: Continuous degassing of a rhyolitic volcano

Decade-long study of degassing at Kudriavy volcano, Iturup, Kurile Islands (1990–1999): Gas temperature and composition variations, and occurrence of 1999 phreatic eruption


A high-temperature (up to 940°C) fumarolic activity at Kudriavy volcano had been studied during 1990–1999. The maximum gas temperatures of the fumaroles were measured in 1992 as 940°C, then gradually decreased with time and reached to 907°C in 1999. Gas composition of the high-temperature fumarole became enriched in H2O and depleted in other gas components, in particular in CO2. Hydrogen isotopic compositions of the high-temperature fumarolic gases were gradually depleted in deuterium. The gradual and continuous decrease in temperature and changes in gas composition observed during the last 10-year suggest that a magmatic melt have been degassing in a relatively steady-state manner from a single magma chamber. The detail investigations in 1998 and 1999 revealed short-term changes in gas composition characterized by sporadic increases in H2, CO2, and Stotal after intense precipitations. Small-scale eruptions occurred on October 7, 1999 at the summit. The ratios of major gas components (C/S, C/Cl, S/Cl, C/F, S/F, and Cl/F) significantly increased just prior to the eruption. The eruption at the Kudriavy volcano in 1999 was likely a phreatic eruption as a result of the intense precipitations after unusually long dry period. Meteoric water penetrated into the hot zone of volcano edifice and rapidly boiled causing the eruption.


  • Barberi, F., A. Bertagnini, P. Landi, and C. Principe, A review on phreatic eruptions and their precursors, J. Volcanol. Geotherm. Res., 52, 231–246, 1992.

    Article  Google Scholar 

  • Botcharnikov, R. E., V. A. Knyazik, A. S. Steinberg, and G. S. Steinberg, The emission of gases and petrogenetic and ore elements in the Kudryavyi volcano on Iturup Island, the Kuriles, Trans. (Doklady) Rus. Acad. Sci., 361, 858, 1998a.

    Google Scholar 

  • Botcharnikov, R. E., M. A. Korzhinsky, and S. I. Tkachenko, Interpretation of magmatic-meteoric water mixing processes at Kudriavy volcano using isotope, chemical compositions and heat calculations, Colima Volcano VI International Meeting, Colima, Mexico (abstract), 1998b.

  • Dixon, J. E. and E. M. Stolper, An experimental study of water and carbon dioxide solubilities in Mid-Ocean Ridge Basaltic liquids. Part II: Application to degassing, J. Petrol., 36, 1633–1646, 1995.

    Google Scholar 

  • Ermakov, V. A. and G. S. Steinberg, Kudryavyi volcano and evolution of Medvezhiya caldera (Iturup I., Kuril Ils.), Volcanol. Seism., 3, 19–40, 1999 (in Russian).

    Google Scholar 

  • Fischer, T. P., W. F. Giggenbach, Y. Sano, and S. N. Williams, Fluxes and sources of volatiles discharged from Kudryavy, a subduction zone volcano, Kurile Islands, Earth Planet. Sci. Lett., 160, 81–96, 1998.

    Article  Google Scholar 

  • Giggenbach, W. F., A simple method for the collection and analysis of volcanic gas samples, Bull. Volcanol., 39, 132–145, 1975.

    Article  Google Scholar 

  • Giggenbach, W. F., The compositions of gases in geothermal and volcanic systems as a function of tectonic setting, Proc. Int. Symp. Water-rock Interaction, 8, 873–878, 1992a.

    Google Scholar 

  • Giggenbach, W. F., Isotopic shifts in waters from geothermal and volcanic systems along convergent plate boundaries and their origin, Earth Planet. Sci. Lett., 113, 495–510, 1992b.

    Article  Google Scholar 

  • Giggenbach, W. F., Chemical composition of volcanic gases, in Monitoring and Mitigation of Volcanic Hazards, Scarpa/Tilling, pp. 221–256, 1996.

  • Giggenbach, W. F. and R. L. Goguel, Collection and analysis of geothermal and volcanic water and gas discharges, New Zealand DSIR Chemistry Div. Rprt. CD 2401, 81, 1989.

  • Goff, F. and G. M. McMurtry, Tritium and stable isotopes of magmatic waters, J. Volcanol. Geotherm. Res., 97, 347–396, 2000.

    Article  Google Scholar 

  • Gorshkov, G. S., Volcanism and Upper Mantle: Investigation in Kurile Island Arc System, Plenum Press, London, 1970.

    Book  Google Scholar 

  • Holloway, J. R. and J. G. Blank, Application of experimental results to C-O-H species in natural melts, in Volatiles in Magmas, edited by M. R. Carrol and J. R. Holloway, Rev. Miner., 30, 187–230, 1994.

  • Jimenez, M.-J. and M. Garcia-Fernandez, Occurrence of shallow earthquakes following periods of intense rainfall in Tenerife, Canary Islands, J. Volcanol. Geotherm. Res., 103, 463–468, 2000.

    Article  Google Scholar 

  • Kazahaya, K., H. Shinohara, and G. Saito, Excessive degassing of Izu-Oshima volcano: magma convection in a conduit, Bull. Volcanol., 56, 207–216, 1994.

    Article  Google Scholar 

  • Korzhinsky, M. A., S. I. Tkachenko, R. E. Botcharnikov, N. N. Zhdanov, and E. G. Osadchii, Sensor equipment for measuring the parameters and composition of volcanic gases. Results of measurements at Kudriavy volcano, Iturup, South Kuriles, Proceedings VII-th Field Workshop on volcanic gases, Satsuma Iwojima and Kuju, Japan, 2000.

  • Mangan, M. and T. Sisson, Delayed, disequilibrium degassing in rhyolite magma: decompression experiments and implications for explosive volcanism, Earth Planet. Sci. Lett., 183, 441–455, 2000.

    Article  Google Scholar 

  • Shevenell, L. and F. Goff, Temporal geochemical variations in volatile emissions from Mount St. Helens, USA, 1980–1994, J. Volcanol. Geotherm. Res., 99, 123–138, 2000.

    Article  Google Scholar 

  • Shinohara, H., Preliminary evaluation of analytical results for samples collected during sixth field workshop on volcanic gases, IAVCEI Newsletter, 14, 2–6, 1999.

    Google Scholar 

  • Shinohara, H., W. F. Giggenbach, K. Kazahaya, and J. W. Hedenquist, Geochemistry of volcanic gases and hot springs of Satsuma-Iwojima, Japan: following Matsuo, Geochem. J., 27, 271–285, 1993.

    Article  Google Scholar 

  • Shinohara, H., K. Kazahaya, G. Saito, N. Matsushima, and Y. Kawanabe, Degassing activity from Iwodake rhyolitic cone, Satsuma-Iwojima volcano, Japan: Formation of a new degassing vent, 1990–1999, Earth Planets Space, 54, this issue, 175–185, 2002.

    Article  Google Scholar 

  • Simkin, T. and L. Siebert, Volcanoes of the World, 2nd ed., Geoscience press, Tucson and Smithsonian Inst., Washington, 1994.

  • Stevenson, D. S., Physical models of fumarolic flow, J. Volcanol. Geotherm. Res., 57, 139–156, 1993.

    Article  Google Scholar 

  • Symonds, R. B., Y. Mizutani, and P. H. Briggs, Long-term geochemical surveillance of fumaroles at Showa-Shinzan dome, Usu volcano, Japan, J. Volcanol. Geotherm. Res., 73, 177–211, 1996.

    Article  Google Scholar 

  • Taran, Y. A., J. F. Hedenquist, M. A. Korzhinsky, S. I. Tkachenko, and K. I. Shmulovich, Geochemistry of magmatic gases from Kudryavy volcano, Iturup, Kuril islands, Geochim. Cosmochim. Acta., 59, 1749–1761, 1995.

    Article  Google Scholar 

  • Taran, Y. A., A. Bernard, J.-C. Gavilanes, E. Lunezheva, A. Cortes, and M. A. Armienta, Chemistry and mineralogy of high-temperature gas discharges from Colima volcano, Mexico. Implications for magmatic gas-atmosphere interaction, J. Volcanol. Geotherm. Res., 108, 245–264, 2001.

    Article  Google Scholar 

  • Vlasov, G. M. and E. D. Petrachenko, Volcanic Sulfur Ore Deposits and Some Problems of Hydrothermal Ore Formation, 360 pp., Nauka, Moscow, 1971 (in Russian).

    Google Scholar 

  • Wahrenberger, C. M., Some aspects of the chemistry of volcanic gases, Ph.D. dissertation, Zurich, 1997.

    Google Scholar 

  • Zimmer, M., J. Erzinger, and Y. Sulistiyo, Continuous gas monitoring with a chromatograph and an alpha scintillation counter on Merapi volcano, Indonesia, Proceedings VII-th Field Workshop on volcanic gases, Satsuma Iwojima and Kuju, Japan, 2000.

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Correspondence to Mikhail A. Korzhinsky.

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Korzhinsky, M.A., Botcharnikov, R.E., Tkachenko, S.I. et al. Decade-long study of degassing at Kudriavy volcano, Iturup, Kurile Islands (1990–1999): Gas temperature and composition variations, and occurrence of 1999 phreatic eruption. Earth Planet Sp 54, 337–347 (2002).

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  • Meteoric Water
  • Fumarolic Activity
  • Phreatic Eruption
  • Intense Rain
  • Central Crater