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KASTORIA “BLIND” ACTIVE FAULT: HAZARDOUS SEISMOGENIC FAULT OF THE NW GREECE

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Ch. P. Metaxas, N.S. Lalechos, S.N. Lalechos
Ch. P. Metaxas, N.S. Lalechos, S.N. Lalechos

Abstract


The Aliakmon river bed, as well as a series of certain parallel narrow grabens, striking NW-SE are filled with Neogene-Quaternary deposits; thus showing the existence of the covered, “blind”, fault zone, which borders the Eastern edge of Meso-Hellenic Trench and passes in close vicinity to the Kastoria town. Distribution of earthquakes epicentres (M≥4.0, for the period of 1930-2009) along this segmented rupture zone, proves the existence at depth of an active seismogenic fault which has generated some strong earthquakes in the past: 1709, M = 6.0; 1812, M = 6.5 and 1894, M = 6.1 (~ 100-year Recurrence Time events). The calculations of Lapsed Rate characterizing the stage of the fault seismic cycle (LR = 115%) show that the active Kastoria fault could be in a pre-seismic stage of its seismic cycle. Applying the seismicity rates model (time-independent Gutenberg-Richter recurrence model) and using the fault seismicity parameters, obtained inside the fault influence zone, as input in EZ-FRISK® software, the Probabilistic Seismic Hazard Analysis has been carried out for the area of Kastoria town. The results show that calculated magnitude for event with 100- year recurrence time is ~6.1, which correspond to the magnitude of three events, occurred at the fault during the last 300 years (corresponding average slip rate . 3 mm/year). As the calculated Hazard Curve shows, the event of that range could give ground shaking in the Kastoria town in the order of 0.625 g at the spectral period of 0.3 sec.

Keywords


seismicity; “blind” seismogenic fault; seismic cycle;

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References


Aliaj, S., & Dushi, E., 2007. Seismogenic Models for Albania: Overview of Relevant Data. First Workshop

for the NATO Science for Peace, Project No 983054: “Harmonization of Seismic Hazard Maps

for the Western Balkan Countries”. Ljubliana, Slovenia, 9 November 2007 (Presentation).

Ambraseys, N.N., Simpson, K.A., and Bommer, J.J., 1996. “Prediction of Horizontal Response Spectra

XLIII, No 1 – 450

Fig. 4: (a): Activity rates of the Kastoria fault and (b): Total Hazard Curve calculated for bedrock conditions

from fault source “Kastoria Fault” at the site “Kastoria town” (Kastoria Strong Motion Station of ITSAK,

KAS1, 40.52N, 21.26E, limestone, dolomite limestone).

in Europe”, Earthquake Engineering and Structural Dynamics, Vol.25, p. 371-400.

Bizon, G., Bizon, J.-J., Lalechos, N., Savoyat, E., 1968. Présence d’Éocène transgressif en Thessalie. Incidences

sur la paléogéographie régionale. Bull. Soc. Géol. de France (7), X, p. 36-38

Boschi, E., Giardini, D., Pantosti, D., Valensise, G., Arrowsmith, R., Basham, P., Burgmann, R., Crone,

A., Hull, A., McGuire, R., Schwarts, D., Sieh, K., Ward, S., and Yeats, R., 1996. New trends in active

faulting studies for seismic hazard assessment. ANNALI DI GEOFISICA, XXXIX, 1301-1307.

Cornell, C.A., 1968. “Engineering seismic risk analysis”, Bull. Seism. Soc. Am., 58, 5, 1503-1606.

Doutsos, T., Koukouvelas, I., Zelilidis, A., Kontopoulos N., 1994. Intracontinental wedging and postorogenic

collapse in the Mesohellenic Trough. Geologische Rundshau, 83, 257-275.

Institut Français du Pétrole / Branche Recherche et Exploitation du Pétrole 1966. Etude des bassins de

Grevena – Thessalie. Rapport pour le Ministère de l’Industrie, Direction Générale des Mines, Grèce.

Itaba, S., and Watanabe, K., 2005. Seismicity cycle and large earthquakes. Pp.4. On-line:

http//www.ism.ac.jp/~ogata/Statsei4/abstr/Itaba. pdf

Itaba, S. and Watanabe, K. Seismic activity before and after a large earthquake in seismicity cycle. On line:

http://www.rcep.dpri.kyoto-u.ac.jp/~itaba

Itaba, S., Watanabe, K., Nishida, R., Noguchi, T. Change of seismic activity in the cycle of a large earthquake.

On-line: http://www.rcep.dpri.kyoto-u.ac.jp/~itaba

Khesin, B., Metaxas, Ch., Alexeev, V., 1982. About the geological nature of large-scale gravity anomaly

Taliss-Vandam (On the problem of crustal model of 15 km super-deep well SG-1 in Azerbaijan).

VINTI Publishers, Νο 3680-82, Moscow, 30 pp. (In Russian).

McGuire, R., 1995. Probabilistic seismic hazard analysis and design earthquakes closing the loop. Bull.

Seism. Soc. Am., 85, 5, 1275-1284.

McGuire, R., 2004. Seismic Hazard and Risk Analysis. EERI Monograph MNO-10. Earthq. Eng. Res.

Inst., Oakland, Ca.

Mercier, J-L and Lalechos, S., 1993. The Middle-Late Pleistocene NW-SE extension in Southern Peloponnesus

and the kinematics of the seismic fault of the 1986 Kalamata earthquake (Greece). Proceedings

of the 2nd Congress of the Hellenic Geophysical Union, Florina, 5-7 May 1993,

(Seismology), 586-594.

Mercier, J-L., Sorel, D., Lalechos, S., Keraudren B., 1993. The tectonic regimes along the convergent

border of the Aegean arc from the late Miocene to the present; southern Peloponnesus as an example.

NATO advanced research workshop on Recent evolution and seismicity of the Mediterranean region.

Erice, Italy, Sept. 18-27, 1992 (In: Recent evolution and seismicity of the Mediterranean region,

NATO ASI Series. Series C: Mathematical and Physical Sciences, 402, 141-160, 1993. Boschi-E (editor);

Mantovani-E (editor); Morelli-A (editor).

Metaxas, C., Angelopoulos, A., Lalechos, S., Foundoulis, D., 2001. Deep tectonic structure of Northwestern

Attica, Greece: Geodynamic Pattern of Athens Earthquake. Proceedings of the 9th International

Congress, Athens, September 2001. Bulletin of the Geol. Soc. of Greece, XXXIV/1, 259-265.

Mogi, K., 1985. Earthquake Prediction. ACADEMIC PRESS. HBJ Publishers, 382.

Mountrakis, D., Pavlides, S., Zouros, N., Chatzipetros, A., Kostopoulos, D., 1995a. The 13 May 1995

western Macedonia (Greece) earthquake. Preliminary results on the seismic fault geometry and kinematics.

XV Congress of the Carpatho-Balkan Geological Association, September 17-20, 1995, Athens,

Greece, 11.

Mountrakis, D. et al., 1995b. Map of the active faults of Greece, Macedonia area, scale 1:300 000, Thessaloniki

University.

Papanastassiou, D., Latoussakis, J., Stavrakakis, J., 2001. A Revised Catalogue of Earthquakes in the

XLIII, No 1 – 451

Broader Area of Greece for the period 1950-2000. Proceed. of the 9th International Congress, Athens,

September 2001. Bulletin of the Geol. Soc. of Greece, XXXIV/4, 1563-1566

Papazachos Β.C, Panagiotopoulos, D.G, Scordilis, E.M, Karakaisis, G.F., Papaioannou, Ch.A.,

Karakostas, B.G., Papadimitriou, E.E., Kiratzi, A.A., Hatzidimitriou, P.M., Leventakis, G.N., Voidomatis,

Ph.S., Peftitselis, K.J., Tsapanos, T.M., 1995. Focal properties of the 13 May 1995 large (Ms

= 6.6) earthquake in the Kozani area (North Greece). XV Congress of the Carpatho-Balkan Geological

Association, September 17-20, 1995, Athens, Greece, 13.

Papazachos Β. and Papazachou, Κ., 2003. Earthquakes of Greece. ZITI Publishers,Thessaloniki, 2003,

(In Greek).

Papazachos, B.C., Comninakis, P.E., Karakaisis, G.F., Karakostas, B.G., Papaioannou, Ch.A., Papazachos,

C.B. and Scordilis, E.M., 2000. A catalogue of earthquakes in Greece and surrounding area for the period

BC-1999. Publ. Geophys. Laboratory, University of Thessaloniki, 1, 333.

Papazachos, B.C., Comninakis, P.E., Scordilis, E.M., Karakaisis, G.F. and Papazachos, C.B., 2009. A catalogue

of earthquakes in the Mediterranean and surrounding area for the period 1901 - 2008. Publ.

Geophys. Laboratory, University of Thessaloniki.

Papanikolaou, D.J., Lekkas, E.L., Mariolakos, I.D., Mirkou, R.M., 1988. Contribution to the geodynamic

evolution of the Mesohellenic basin. Bulletin of the Geol. Soc. of Greece, XX, 17-36.

Risk Engineering, 2005. EZ-RISK, Software for In-depth Seismic Hazard Analysis. Version 7.01, 272.

Slemmons, D.B. and dePolo, C.M., 1986. Evaluation of active faulting and associated hazards: in Wallace,

R.E. (ed.), Studies in Geophysics, Active Tectonics, National Academy Press, 266.

Vergély P., 1984. Tectonique des ophiolites dans les hellénides internes – Conséquences sur l’évolution

des régions téthysiennes occidentales. Thèse, Université de Paris-Sud.

Watanabe, K., Itaba, S., Mori, J., Nishida, R., 2006. Quantitative evaluation of seismic activity around active

faults and a general seismicity cycle of the fault. AOGS 2006, 794/1202

Wells, D., and Coppersmith, J., 1994. New Empirical Relationships among Magnitude, Rupture Length,

Rupture Wight, Rupture Area, and Surface Displacement. Bulletin of the Seismological Society of

America, 84, 974-1002.


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