A CATALOGUE OF EARTHQUAKES IN GREECE AND SURROUNDING AREA FOR THE PERIOD 550BC 1999

By

Papazachos, B.C.1, Comninakis, P.E.2, Karakaisis, G.F.1, Karakostas, B.G.1, Papaioannou, Ch.A.3, Papazachos, C.B.1 and Scordilis, E.M.1

1Geophysical Laboratory, School of Geology, Univ. of Thessaloniki, Thessaloniki 54006, Greece

2Papaconstantinou 9, Papagou, Athens 15569, Greece

3Inst. Of Earthq. Eng. And Engineering Seismology, PO Box 53, Foinikas, Thessaloniki 55102, Greece

This catalogue includes information (date, origin time, epicenter coordinates, focal depth, magnitude and maximum macroseismic intensity [when available]) for all known earthquakes of the following time intervals with the corresponding magnitudes:

550BC - 1900

M³ 6.0

1901 - 1949

M³ 4.9

1950 1999

M³ 4.0

The completeness of the catalogue varies from region to region in this area but the catalogue is complete for the whole area and for the following time intervals and the corresponding magnitudes:

464BC 1500

M³ 8.0

1501 1844

M³ 7.3

1845 19101

M³ 6.0

1911 1949

M³ 5.0

1950 1963

M³ 4.5

1964 1980

M³ 4.3

1981 - 1999

M³ 4.0

All magnitudes are given in a scale equivalent to the moment magnitude and are converted from other magnitude scales in which there were originally calculated (local magnitude, surface wave magnitude, body wave magnitude, signal duration magnitude, macroseismic magnitude) by proper formulae (Papazachos et al., 1997; Papazachos and Papaioannou, 1997; Margaris and Papazachos, 1999). The errors in the magnitudes are in the interval ± 0.25 for the instrumental period (1911-1999). For the historical data these errors are ± 0.35 when the number of available macroseismic observations (number of places where the intensity is known) is ³ 10. When the number of macroseismic observations is less than 10 the magnitude errors reach up to a half of the magnitude unit and the value of the magnitude in the catalogue is in parenthesis.

The epicenter coordinates for the earthquakes of the period 1965-1999 have been calculated by instrumental data and their errors are up to 20km for the older ones (1965-1980) and up to 10km for the new ones (1981-1999). These coordinates for the period 1901-1964 were calculated by both instrumental and macroseismic information and their errors can be up to 30km. For the historical earthquakes the epicenters have usually an error of about 30km but this error can reach up to 50km when the number of available macroseismic information is less than 5.

The symbol n (=normal depth) is used to denote the focal depth for all shallow earthquakes. Although this symbol typically means focal depth less than 60km, the shallow earthquakes in this area have a focal depth less than 20km, except for some of them along the Hellenic arc where their depths can reach up to 50km. For the intermediate depth earthquakes the value of the focal depth is given when its error is less than 20km and the symbol i (=intermediate depth) is used when this error is larger (historical earthquakes).

The dates of the catalogue are given in the old (Julian) calendar for the earthquakes which occurred till 1582. For the earthquakes which occurred after that, the dates are given in the Gregorian calendar and the origin times in GMT. The macroseismic intensities are in the MM scale unless it is written otherwise.

The catalogue includes also 16 smaller (M<6.0) historical earthquakes which are connected with historical tradition (important historical events, stories, etc.). No accurate information concerning the size of these shocks is available. There is also information for 18 events, which are listed as earthquakes in the present catalogue, of which the occurrence is not certain because this occurrence was inferred from indirect evidence. These events are marked by an asterisk ( * ) next to the name of the site where they were felt.

A very large number of basic information sources have been used to make the present catalogue, among which are previous parametric catalogues (Ergin et al., 1967; Galanopoulos, 1960, 1963, 1977; Karnik, 1969; Sulstarova et al., 1971; Papazachos and Comninakis, 1972; Shebalin et al., 1974; Alsan et al., 1975; Comninakis and Papazachos, 1978, 1986; Makropoulos, 1978; Glavcheva, 1993; ISC, NEIC, CSEM bulletins).

A detailed description of the macroseismic effects for the strong earthquakes (M³ 6.0) of this catalogue can be found in Papazachos and Papazachou (1997).

References

Alsan, E., Tezucan, L. and Bath, M. (1975). An earthquake catalogue for Turkey for the interval 1913-1970. Kandilli Observ., Turkey, and Seism. Inst. Upps., Sweden, Rep. No. 75, 166 pp.

Comninakis, P.E. and Papazachos, B.C. (1978). A catalogue of earthquakes in the Mediterranean and surrounding area for the period 1901-1975. Publ. of the Univ. of Thessaloniki, Geophys. Laboratory, 5, 96 pp.

Comninakis, P.E. and Papazachos, B.C. (1986). A catalogue of earthquakes in Greece and the surrounding area for the period 1901-1985. Publ. of the Univ. of Thessaloniki, Geophys. Laboratory, 1, 167 pp.

Ergin, K., Guclu, U. and Uz, Z. (1967). A catalogue of earthquakes for Turkey and surrounding area. Publ. Techn. Univ. Istanbul, Turkey, 169 pp.

Galanopoulos, A.G. (1960). A catalogue of shocks with Io³ VI or M³ 5 for the years 1801-1958. Athens, 119 pp.

Galanopoulos, A.G. (1963). On mapping the seismic activity in Greece. Ann. di Geofisica, 16, 37-100.

Galanopoulos, A.G. (1977). On the difference in the seismic risk for normal and tall structures at the same site. Athens, 33 pp.

Glavcheva, R. (1993). Atlas of isoseismal maps, Bulgaria, 1981-1990. Geoph. Inst., Bulgarian Academy of Sciences, Sofia, 67 pp.

Karnik, V. (1969). Seismicity of the European area, Part 1. D. Reidel Dordrecht, Netherlands, 364 pp.

Makropoulos, K.C. (1978). The statistics of large earthquake magnitude and an evaluation of Greek seismicity. Ph. D. Thesis, Univ. of Edinburg, 193 pp.

Margaris, B. N. and Papazachos, C.B. (1999). Moment magnitude relations based on strong motion records in Greece. Bull. Seism. Soc. Am., 89, 442-455.

Papazachos, B.C. and Comninakis, P.E. (1972). The seismic activity in the area of Greece during the time period 1911-1971. Publ. Sci. Group Space Res., Greece, 4, 60 pp.

Papazachos, B.C. and Papazachou, C. (1997). The earthquakes of Greece. Ziti Editions, pp. 304, Thessaloniki, Greece.

Papazachos, B.C., Kiratzi, A.A. and Karakostas, B.G. (1997). Toward an homogeneous moment magnitude determination in Greece and surrounding area. Bull. Seism. Soc. Am., 87, 474-483.

Papazachos, C. B. and Papaioannou, Ch. A. (1997). The macroseismic field of the Balkan area. J. of Seismology, 1, 181-201.

Shebalin, N.V., Karnik, V., Hadzievski, D. [Editors], (1974). Catalogue of earthquakes, part 1, 1901-1970, UNDP/UNESCO Survey of the Seismicity of the Balkan Region, Skopje.

Sulstarova, E., Kociaj, S. and Aliaj, S. (1971). Catalogue of earthquakes in Albania prior to 1800. Io³ VII, 1800-1970, Io³ , Tirana, 119-196.