Differential calibration of seismometers for measurement of rotation and strain

• Autorzy: Wiszniowski J. , Hościłowicz M. , Skrzyński A. , Suchcicki J. , Teisseyre K. P.
• Języki publikacji: EN

Abstrakty

EN

A method of correcting the seismometers' responses discrepancy for differential measurements of strains and rotations in the seismic far field is proposed. The method concerns differential calibration of the whole seismometers' array by electric current. A model of corrective filtering of the obtained differential signals in the Z domain is given. Two methods of the filter parameters' estimation are introduced; they are based on the seismometers response to the calibration. A practical test of the methods - an analysis of a recorded seismic event - is added. Significant reduction of differences between simultaneous seismic recordings was obtained, which is interpreted as cleaning of differential signal from spurious elements.

Słowa kluczowe

EN

seismometer; rotation seismograph; rotation wave; calibration of seismometers

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2008
• Tom: Vol. 56, no. 2
• Strony: 391--407

Twórcy

autor

Wiszniowski J.

autor

Hościłowicz M.

autor

Skrzyński A.

autor

Suchcicki J.

autor

Teisseyre K. P.

• Instytut Geofizyki Polskiej Akademii Nauk ul. Ks. Janusza 64 01-452 Warszawa tel.: [phone],

Bibliografia

• Antoniou, A. (1974), Digital Filters: Analysis and Design, McGraw-Hill, New York.
• Asten, W.A. (1977), Theory and practice of geophone calibration in situ using a modified step method, IEEE Trans. Geoscience Electronics GE-15, 4, 208-214.
• Berger, J., D.C. Agnew, R.L. Parker, and W.E. Farrell (1979), Seismic system calibration; 2. Cross-spectral calibration using random binary signals, Bull. Seism. Soc. Am. 69, 271-288.
• Ljung, L. (2001), System Identification Toolbox For Use with MATLAB, User's Guide, version 5, The MathWorks.
• Moriya, T., and R. Teisseyre (1999), Discussion on the recording of seismic rotation waves, Acta Geophys. Pol. 47, 351-362.
• Moriya, T., and R. Teisseyre (2006), Design of rotational seismometer and non-linear behaviour of rotation components of earthquakes. In: R. Teisseyre, M. Takeo, and E. Majewski (eds.), Earthquake Source Asymmetry, Structural Media and Rotation Effect, Springer, Berlin, 439-450.
• Nowożyński, K., and K.P. Teisseyre (2003), Time-domain filtering of seismic rotation waves, Acta Geophys. Pol. 51, 51-62.
• Oppenheim, A.V., and R.W. Schafer (1975), Digital Signal Processing, Prentice-Hall Inc., Englewood Cliffs, NJ.
• Saito, M. (1968), Synthesis of rotational and dilatational seismograms, J. Phys. Earth 16, 53-62.
• Teisseyre, R., J. Suchcicki and K.P. Teisseyre (2003a), Recording of seismic rotation waves: reliability analysis, Acta Geophys. Pol. 51, 37-50.
• Teisseyre, R., J. Suchcicki, K.P. Teisseyre, J. Wiszniowski, and P. Palangio (2003b), Seismic rotational waves: basic elements of theory and recording, Annals of Geophysics 46, 671-685.
• Wiszniowski, J. (2002), Principle of operation of the broad-band seismic data acquisition system MK-6. In Broadband seismic system: effect of transfer band on detection and recording of seismic waves, Publs. Inst. Geophys. Pol. Acad. Sc. B-27 (339), 15-44.
• Wiszniowski, J. (2006), Rotation and Twist Motion Recording - Couple Pendulum and Rigid Seismometers System. In: R. Teisseyre et al. (eds.), Earthquake Source Asymmetry, Structural Media and Rotation Effects, Springer, Berlin.