SEISMICITY OF WESTERN MACEDONIA, GREECE

Citation
Gf. Karakaisis et al., SEISMICITY OF WESTERN MACEDONIA, GREECE, Journal of geodynamics, 26(2-4), 1998, pp. 297-307
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geochemitry & Geophysics
Journal title
ISSN journal
0264-3707
Volume
26
Issue
2-4
Year of publication
1998
Pages
297 - 307
Database
ISI
SICI code
0264-3707(1998)26:2-4<297:SOWMG>2.0.ZU;2-5
Abstract
The seismicity of western Macedonia is examined in the present paper. On the basis of historical information as well as on instrumental data it is found that this area is characterized by low seismicity. The fo cal region of the Grevena-Kozani 1995 earthquake exhibits the highest seismicity in terms of probabilities for the generation of strong (M-s , greater than or equal to 6.0) earthquakes in a period of fifty years . Two other regions with relatively high seismicity were also distingu ished (west of Edessa and around Prespes lakes). Accurate determinatio n of focal parameters of all earthquakes occurred in the area during O ctober 1975-April 1995, by the use of a 3-D crustal model shows that t he seismic activity is related to the graben structures of the studied area. Finally, evidence is presented that the triggering of the 1995 earthquake may be related to the impoundment of the Polyfytos artifici al lake. (C) 1998 Elsevier Science Ltd. All rights reserved.