Predominant frequencies in the spectrum of ice-vibration events

• Autorzy: Górski M.
• Języki publikacji: EN

Abstrakty

EN

Examples of ice-vibrations recorded in the Hans Glacier (South Spitsbergen) in spring-summer 2002, and in the Pasterze Glacier (Alps) in the fall of 2003 have been analysed. The spectral analysis of the recorded vibrations reveals a relationship between the period of vibrations and the scale of dynamic processes in a given glacier. Predominant frequency of ice-vibrations recorded in the Pasterze Glacier is higher than that of the events in the Hans Glacier, where the scale of dynamic processes in much greater. The presented spectra of the ice-vibration seismic events display characteristic frequency maxima related to the scale of dynamic processes taking place within a given glacier.

Słowa kluczowe

EN

glacier seismicity; icequakes; ice vibrations

• Wydawca: Instytut Geofizyki PAN
• Czasopismo: Acta Geophysica Polonica
• Rocznik: 2004
• Tom: Vol. 52, nr 4
• Strony: 457--464
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Górski M.

• Institute of Geophysics, Polish Academy of Sciences, Księcia Janusza 64, 01-452 Warszawa

Bibliografia

• 1. Górski, M., 1997, Seismicity of the Hornsund region, Spitsbergen: icequakes and earthquakes Publs. Inst. Geophys. Pol. Acad. Sci. B-20 (308), 77 pp.
• 2. Górski, M., 1999, Seismic wave velocities in the Hans Glacier. In: J. Repelewska-Pękalowa (ed.), Polish Polar Studies, 26th Intern. Polar Symposium, UMCS Press, Lublin; 77-81.
• 3. Górski, M., 2003, Icequakes in Hans Glacier, Spitsbergen: source parameters of icequake series, Acta Geophys. Pol. 51, 399-407.
• 4. Górski, M., and R. Teisseyre, 1991, Seismic events in Hornsund, Spitsbergen, Polish Polar Res; 12, 345-352.
• 5. Lewandowska, H., and R. Teisseyre, 1964, Investigations of the ice microtremors on Spitsbergen in 1962, Biul. Inf. Komisji Wypraw Geofiz. PAN 37, 1-5.