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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 1, issue 1/2
Nat. Hazards Earth Syst. Sci., 1, 3–7, 2001
https://doi.org/10.5194/nhess-1-3-2001
© Author(s) 2001. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Double Issue: Seismic hazard evaluation - Part I

Nat. Hazards Earth Syst. Sci., 1, 3–7, 2001
https://doi.org/10.5194/nhess-1-3-2001
© Author(s) 2001. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  30 Jun 2001

30 Jun 2001

Geophysical Observatory in Kamchatka region for monitoring of phenomena connected with seismic activity

S. Uyeda1, T. Nagao1, K. Hattori1, M. Hayakawa2, K. Miyaki2, O. Molchanov3, V. Gladychev4, L. Baransky4, A. Chtchekotov4, E. Fedorov4, O. Pokhotelov4, S. Andreevsky4, A. Rozhnoi4, Y. Khabazin4, A. Gorbatikov4, E. Gordeev5, V. Chebrov5, V. Sinitzin5, A. Lutikov6, S. Yunga6, G. Kosarev6, V. Surkov7, and G. Belyaev1 S. Uyeda et al.
  • 1Earthquake Prediction Research Center, Tokai University, Shimizu 424-8610, Japan
  • 2Dept. of Electronics Engineering, University of Electro-Communication, Chofu-shi, Tokyo 182, Japan
  • 3Earth Observation Research Center, NASDA, Minato-ku, Tokyo 106, Japan
  • 4Institute of the Physics of the Earth Russian Academy of Sciences, 123995, Moscow D-242, Russia
  • 5Institute of Geophysical Survey Russian Academy of Sciences, Far-East Branch, Kamchatka, Russia
  • 6Institute of Geophysical Survey Russian Academy of Sciences, 123995, Moscow D-242, Russia
  • 7Moscow State Engineering Physics Institute, 115409 Moscow, Russia

Abstract. Regular monitoring of some geophysical parameters in association with seismicity has been carried out since last year at the Japan-Russian Complex Geophysical Observatory in the Kamchatka region. This observatory was organized in connection with the ISTC project in Russia and was motivated by the results of the FRONTIER/RIKEN and FRONTIER/NASDA research projects in Japan. The main purpose of the observations is to investigate the electromagnetic and acoustic phenomena induced by the lithosphere processes (especially by seismic activity). The seismicity of the Kamchatka area is analyzed and a description of the observatory equipment is presented. At present, the activity of the observatory includes the seismic (frequency range ∆F = 0.5 – 40 Hz) and meteorological recordings, together with seismo-acoustic (∆F = 30 – 1000 Hz) and electromagnetic observations: three-component magnetic ULF variations ( ∆F = 0.003 – 30 Hz), three-component electric potential variations ( ∆F < 1.0 Hz), and VLF transmitter’s signal perturbations ( ∆F ~ 10 – 40 kHz).

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