A SOURCE PARAMETERS STUDY OF THE AFTERSHOCK SEQUENCE OF THE KOZANI- GREVENA 1995 EARTHQUAKE BASED ON ACCELERATION RECORDS


A. A. Panou
C. B. Papazachos
Ch. Papaioannou
P. M. Hatzidimitriou
Résumé

Strong motion recordings of the May 13, 1995 Mw=6.6, earthquake sequence that occurred in the Kozani-Grevena region (Western Macedonia, Greece) have been analyzed for the determination of their source parameters. The data set for this study comes from a temporarily deployed accelerograph network and the source parameters using the shear-wave displacement spectra have been estimated. For this estimation the spectral records have been corrected for the site effects and for the propagation path (geometrical spreading and anelastic attenuation). The magnitude of each event was also re-calculated by estimating appropriate station corrections. The derived relationships are

logMo =(1.43 ±0.09) M, + (16.92 ± 0.29), 2.0 < ML< 5.0 (1)

logfc = (-0.56± 0.08) · ML + (2.52 + 0.29), 2.0 < ML< 5.0 (2)

logM0 = (-2.20 + 0.08) · log fc + (23.16 ± 0.84), 0.6 < fc < 10.0 (3)

The near-surface attenuation parameter κ0 has also been determined for the strong motion stations sites. These values of κ0 are in good agreement with those of Margaris and Boore (1998) for the geological formation on which each station was positioned. The obtained source parameters are in good agreement with those from previous studies for the Aegean region.

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  • Rubrique
  • Seismology
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Références
Aki, K., 1988. Physical theory of earthquakes, Proc. Summer School of EMSC & IPGS - Strasbourg 1986, Seismic Hazard in Mediterranean Regions (Eds: Bonnin J., Cara Α., Cistemas A. and Fantechi R.), pp. 3 -33.
Ambraseys, N., 1999. Early earthquakes in the Kozani area, northern Greece, Tectonophysics 308, 291 -298.
Anderson, J. and Hough, S., 1984. A model for the shape of the Fourier amplitude spectrum of acceleration at high frequencies, Bull. Seism. Soc. Am. 74 (5), 1969-1993.
Andrews, D. J., 1986. Objective determination of source parameters and similarity of earthquakes of different size, in Earthquake Source Mechanics, S. Das, J. Boatwright and C. H. Scholz (Editors), American Geophysical Monograph 37, 259-267.
Archuletta, R. J., Granswick, E., Mueller, C, and Spudich, P., 1982. Source parameters of the 1980 Mammoth Lakes, California, earthquake sequence, J. Geophys. Res. 87 (B6), 4595 - 4607.
Archuletta, R. J., Seale S. H., Sangas P. V., Baker L. M. and Swain S. T., 1992. Garner Valley downhole array of accelerometers instrumentation and preliminary data analysis, Bull. Seism. Soc. Am. 82 (4), 1592 - 1621.
Baskoutas, I., Stavrakakis G., Kalogeras I., 1998. Q factor estimation from the aftershock sequence of the 13 May 1995 Kozani earthquake, J. Geodynamics 26 (2-4), 367 - 374.
Boore, M. D. and Boatwright, J., 1984. Average Body-Wave radiation coeficients, Bull. Seism. Soc. Am. 74 (5), 1615-1621.
Brune, J. M., 1970. Tectonic stress and the spectra of seismic shear waves from earthquakes, J. Geophys. Res. 75 (23), 4997-5009.
Brune, J. N., 1971. Correction, J. Geophys. Res. 76 (20), 5002.
Christaras, Β., Dimitriou A. and Lemoni Η., 1998. Soil quality as a factor of the distribution of damages at the meizoseismal area of the Kozani-Grevena 1995 earthquake, in Greece (Mw=6.6), J. Geodynamics 26 (2-4), 393-411.
Chouliaras, G. and Stavrakakis, G. N., 1997. Seismic source parameters from a new dial-up network in Greece, Pure and Appi. Geophys. 150, 91 - 111.
Drakatos, G., Papanastasiou, D., Voulgaris, N. and Stavrakakis, G, 1998. Observations on the 3-D crustal velocity structure in the Kozani-Grevena (NW Greece) area, J. of Geodynamics, 26, 341-351.
Hatzfeld, D., Nord J., Paul Α., Guiguest R., Brione P., Ruegg J-C, Cattin R., Armijjo R., Meyer B., Hubert Α., Bernard P., Karakostas, V., C. Papaioannou, Papanastasiou D., Veis G., 1995. The Kozani-Grevena (Greece) Earthquake of May 13, 1995, Ms=6.6. Preliminary results of a field multidisciplinary survey, Seismological Research Letters 66 (6), 61-70.
Hatzfeld, D., Karakostas, V., Ziazia, M., Selvaggi, G., G., Leborgne, S., Berge, C, Guiguet, R., Paul, Α., Voidomatis, P., Diagourtas, D., Kassaras, I, Koutsikos, I., Makropoulos, K., Azzara, R., Di Bona, M., Baccheschi, S., Bernard, P. and Papaioannou C, 1997. The Kozani-Grevena (Greece) Earthquake of 13 May 1995 revisited from a detailed seismological study, Bull. Seism. Soc. Am. 87 (2), 463-473.
Keilis - Borok, V., 1959. On the estimation of the displacement in an earthquake source and of source dimensions. Annali di Geofisica 12, 205 - 214.
Kiratzi, Α. Α., 1984. Magnitudes scales for earthquakes in Broader Aegean Area, PhD-Thesis, Aristotle University of Thessaloniki: 189 pp (in Greek with an English abstract).
Kiratzi, Α. Α., 1999. Stress tensor inversion in Western Greece using earthquake focal mechanisms from the Kozani-Grevena seismic sequence, Annali di Geofisica 42 (4), 725-734.
Lee, W. H. K. and Lahr J. C, 1975. HYP071: a computer program for the determining hypocenter, magnitude and first motion pattern of local earthquakes, U.S. Geol. Surv. Open File Report, 114 pp.
Lermo, J. and Chavez-Garcia F. G., 1993. Site effect evaluation using spectral ratios with only one station, Bull. Seism. Soc. Am. 83 (5), 1574-1594.
Margaris, B. and Hatzidimitriou P., 1997. Source parameters of the Arnea earthquake Ms=5.8, Based on stochastic simulation method, Proceedings 3ου Hellenic Conference on Geotechnical Engineering, Patra 1997, 1, pp. 535-542 (in Greek with an English abstract).
Margaris, B. N. and Boore, D. M., 1998. Determination of Δσ and k0 from Response spectra of large earthquakes in Greece, Bull. Seism. Soc. Am. 88 (1), 170-182.
Margaris, B. N. and Papazachos, C. B., 1999. Moment - magnitude relations based on strong - motion records in Greece, Bull. Seism. Soc. Am. 89 (2), 442-455.
Margaris, B. N. and Hatzidimitriou, P. M., 2002. Source Spectral Scaling and Stress Release Estimates Using Strong - Motion Records in Greece, Bull. Seism. Soc. Am. 92 (3), 1040-1059.
Mountrakis, D., Pavlides, S., Zouros. N., Astaras, Th., Chatzipetros, Α., 1998. Seismic fault geometry and kinematics of the 13 May 1995 Western Macedonia (Greece) earthquake, J. Geodynamics 26 (2-4), 175-196.
Nakamura, Y., 1989. A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface, QR Railway Tech. Res. Inst., 30 (1), 25-33.
Panagiotou, M., 2001. Source parameters, fault plain solution and inversion of stress tensor for earthquakes in Northern and Central Aegean, M.Sc, Aristotle University of Thessaloniki: 130 pp (in Greek with an English abstract).
Papanastasiou, D., Drakatos, G.. Voulgaris, N. and Stavrakakis, G, 1998. The May 13, 1995 Kozani-Grevena (NW Greece) earthquake: Source study and its tectonic implications, J. of Geodynamics, 26, 233-244.
Papazachos, B. C. and Papazachou, C, 1997. The earthquakes of Greece, Ziti Pubi. Co., 304 pp.
Papazachos, Β. C, Kiratzi, Α. Α., and Karakostas, Β. G., 1997. Toward a homogeneous moment-magnitude determination for earthquakes in Greece and the surrounding area, Bull. Seism. Soc. Am. 87 (2), 474-483.
Papazachos, B. C. and Papazachou, C, 2002. The earthquakes of Greece, Ziti Pubi. Co., 317 pp (in Greek with an English abstract).
Papazachos, B. C, Karakostas, V. G., Kiratzi, Α. Α., Papadimitriou E. E., Papazachos, C, 1998. A model for the 1995 Kozani- Grevena seismic sequence, J. Geodynamics 26 (2-4), 217-231.
Pavlides, S. 1998. Geologic faults and earthquakes investing the seismogenetic fault that caused the Kozani-Grevena 1995 seismic sequence, in Proceedings of the International Conference «The Kozani-Grevena Earthquake of 13 May 1995: a Scientific and Social Approach», pp. 169-181 (in Greek).
Polatidis, Α., 2001. Estimation of source parameters and S-wave attenuation in Central Greece, M.Sc, Aristotle University of Thessaloniki: 101 pp (in Greek with an English abstract).
Raptakis, D., Tolis S., Lorentzidis K., Pitilakis K, 1997. Comparison of Instrumental and theoretical Study of the seismic Response in the Kozani-Grevena Earthquake, Proceedings 3ου Hellenic Conference on Geotechnical Engineering, Patra 1997, 1, pp. 535-542 (in Greek with an English abstract).
Richter, C. F., 1958. Elementary Seismology, W. F. Freeman and Co., San Francisco, California, 758 pp.
Roumelioti, Z., Kiratzi, Α., Theodoulidis, N. and Papaioannou C, 2000. A comparative study of a stochastic and deterministic simulation of strong ground motion applied to the Kozani - Grevena (NW Greece) 1995 sequence, Annali di Geofisica 43 (5), 951-966.
Roumelioti, Ζ., Kiratzi, Α., Theodoulidis, Ν. and Papaioannou C, 2002. S-wave analysis of the 1995 Kozani - Grevena (NW Greece) aftershock sequence, Journal of Seismology 6, 219-236.
Scordilis, M., 1985. Microseismic study of the Servomacedonian zone and the surrounding area, PhD., Aristotle University of Thessaloniki: 250 pp (in Greek with an English abstract).
Tapley, C. W. and Tuli E. J., 2000. Seismic analysis coder, Lawrence Livermore National Laboratory.
Theodulidis, N. and Bard P-Y., 1995. Horizontal to vertical spectral ratio and geological conditions. An analysis of strong motion data from Greece and Taiwan (SMART-1), Soil Dynamics and Earthquake Engineering 14, 177-197.
Theodulidis, N., Lekidis V., Margaris B., Papazachos C, Papaioannou Ch. and Dimitriou P., 1998. Seismic hazard assessment and design spectra for the Kozani-Grevena region (Greece) after the earthquake of May 13, 1995, J. Geodynamics 26 (2-4), 375-391.
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