Abstract
The mechanical, automatically recording seismological instruments developed by Emil Wiechert in Göttingen at the beginning of the 20th century are still in use today. I comparethe recording characteristics of these seismographswith a modern, electrodynamic MARK L4-3D instrument. The frequency-dependent transfer functions are determined and used to restitute the`true' ground displacement. The displacement waveforms at the different instruments are well correlated at frequencies between 0.05 and 4.0 Hz.Amplitudes differ by a factor of less than two. This is sufficientfor the determination of seismological magnitudes which are defined on a logarithmicbasis. The timing accuracy is less favourable due to theslow recording speed on the smoked paper. However, relativetime differences within one second may be resolved, allowing the use of variousmodern seismological interpretation techniques.
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References
Engdahl, E.R., van der Hilst, R. and Buland, R., 1998, Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seism. Soc. Am. 88, 722-743.
Giardini, D. 1999, The global seismic hazard assessment program (GSHAP)-1992/1999, Ann. Geofis. 42, 957-974.
Hedlin, M.A.H., Earle, P.S. and Bolton, H., 2000, Old seismic data yield new insights, EOS Trans. Am. Geophys. Union 81, 469 & 472-473.
Keyser, M., Meyer, R. and Ritter, J.R.R., 2000, Teleseismic Swave and Qp recordings at the Eifel Plume Project, In: Bonatz, M. (ed.), Comptes-Rendus 87, Journées Luxembourgeoises de Géodynamique, pp. 72-77.
Lay, T. and Wallace, T.C., 1995, Modern global seismology, Academic Press, San Diego.
Reid, H.F., 1925, The influence of friction on seismographs, Bull. Seism. Soc. Am. 15, 222-241.
Ritter, J.R.R., Achauer, U., Christensen, U.R. and the Eifel Plume Team, 2000, The teleseismic tomography experiment in the Eifel region, Central Europe: Design and first results, Seism. Res. Lett. 71, 437-443.
Samardjieva, E., Payo, G., Badal, J. and López, C., 1997, Old regional seismograms at the Toledo Observatory. Their study by computer techniques, In: Ferrari, G. (ed.), Historical Seismic Instruments and Documents: A Heritage of Great Scientific and Cultural Value, Conseil de l' Europe, Cahiers du Centre Européen de Géodynamique et de Séismologie, 13, pp. 159-175, Luxembourg.
Scherbaum, F., 1996, Of Poles and Zeros, Fundamentals of Digital Seismology, Kluwer Academic Publishers, Dordrecht.
Stammler, K., 1993, SeismicHandler-Programmable multichannel data handler for interactive and automatic processing of seismological analyses, Comp. Geosciences 19, 135-140.
Villaseñor, A., Bergman, E.A., Boyd, T.M., Engdahl, E.R., Frazier, W.D., Harden, M.M., Orth, J.L., Parkes, R.L. and Shedlock, K.M., 1997, Toward a comprehensive catalog of global historical seismicity, EOS Trans. Am. Geophys. Union 78, 581, 583 & 588.
Wald, D.J., Kanamori, H., Helmberger, D.V. and Heaton, T.H., 1993, Source study of the 1906 San Francisco earthquake, Bull. Seism. Soc. Am. 83, 981-1019.
Wiechert, E., 1903a, Theorie der automatischen Seismographen, Abh. königl. Ges. d. Wiss. Math.-phys. Klasse Weidmannsche Buchhandlung, Berlin.
Wiechert, E., 1903b, Ein astatisches Pendel hoher Empfindlichkeit zur mechanischen Registrierung von Erdbeben, Phys. Zeit. 4, 821-829.
Zoeppritz, K., 1908, Seismische Registrierungen in Göttingen im Jahre 1906, Kgl. Ges. d. Wiss. Nachrichten Math.-phys. Klasse, 129-190.
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Ritter, J.R. On the recording characteristics of the original Wiechert seismographs at Göttingen (Germany). Journal of Seismology 6, 477–486 (2002). https://doi.org/10.1023/A:1021101116511
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DOI: https://doi.org/10.1023/A:1021101116511