Abstract
Low-frequency deconvolution of precise digital records of seismic and industrial vibrations allows significant expansion of the frequency range of electrodynamic geophones, limited only by the deconvolution noise, which is represented by increased instrumental noise. A dependence of deconvolution noise on the decrease rate of a sensor’s natural frequency and the level of initial instrumental noise is assessed theoretically. A method and a simple stand for the experimental evaluation of deconvolution quality are proposed and an example of a hundredfold virtual decrease in natural frequency of the sensor used in the real record is presented.
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References
Bendat, J.S. and Pearsol, A.G., Random Data: Analysis and Measurement Procedures, New York: Wiley, 1971.
Besedina, A.N. and Kabychenko, N.V., A study of seismic vibrations in the long-period part of the spectrum, Tr. MFTI, 2011, vol. 3, no. 3, pp. 51–55.
Besedina, A.N., Kabychenko, N.V., Kocharyan, G.G., and Pavlov, D.V., Correction of frequency characteristics of seismic sensors and noise of corresponding measuring channels, Seism. Instrum., 2012, vol. 48, no. 1, pp. 51–56.
Bogdanov, V.I. and Graizer, V.M., Determination of residual soil displacement from seismograms, Dokl. Akad. Nauk SSSR, 1976, vol. 229, no. 1, pp. 59–62.
Gamburtsev, G.A., Osnovy seismorazvedki (Fundamentals of Seismic Survey), Moscow: Gostoptekhizdat, 1959, 2nd ed.
Graizer, V.M., Determination of true soil displacement from records of strong motions, Izv. Akad. Nauk SSSR. Fiz. Zemli, 1979, no. 12, pp. 36–50.
Graizer, V.M., “Istinnoe” dvizhenie pochvy v epitsentral’noi zone (“True” Soil Displacement in the Epicentral Zone), Moscow: Inst. Fiz. Zemli Akad. Nauk SSSR, 1984.
Perepelitsa, V.A., Opredelenie istinnogo smeshcheniya “pochvy” poseismogramme (Determination of True Soil Displacement from Seismograms), Moscow: Nauka, 1974.
Ponomarev, A.V. and Sidorin, A.Ya., Boris Borisovich Golitsyn (1862–1916), the founder of contemporary seismology: On the 150th Anniversary, Vestn. Otd. Nauk Zemle Ross. Akad. Nauk, 2012, vol. 4, pap. no. NZ6001.
Rykov, A.V., Expansion of the frequency characteristics of a seismograph by filtering, Seism. Prib., 1972, no. 6, pp. 32–34.
Savarenskii, E.F. and Kirnos, D.P., Elementy seismologii i seismometrii (Fundamentals of Seismology and Seismometry), Moscow: Gostekhizdat, 1955.
Savarenskii, E.F., Kosarev, G.L., and Sadikov, F.S., Restoration of true soil displacement from earthquake records, Izv. Akad. Nauk SSSR. Fiz. Zemli, 1977, no. 1, pp. 77–83.
Yushin, V.I., Low-frequency deconvolution of a digital record made by a short-period seismometer, Geol. Geofiz., 2001, vol. 42, no. 5, pp. 852–863.
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Original Russian Text © P.A. Dergach, V.I. Yushin, 2016, published in Seismicheskie Pribory, 2016, Vol. 52, No. 4, pp. 33–42.
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Dergach, P.A., Yushin, V.I. Electrodynamic geophones beyond the limit of capacity. Seism. Instr. 53, 280–285 (2017). https://doi.org/10.3103/S0747923917040028
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DOI: https://doi.org/10.3103/S0747923917040028