STRESS EVOLUTION ONTO MAJOR FAULTS IN MYGDONIA BASIN

PDF
Published: Jul 27, 2016
DOI: https://doi.org/10.12681/bgsg.11861
Keywords:
Coulomb stress onto fault stress Mygdonia basin
G.C. Gkarlaouni
Aristotle University of Thessaloniki, Department of Geophysics
E.E. Papadimitriou
Aristotle University of Thessaloniki, Department of Geophysics
A.Α. Kilias
Aristotle University of Thessaloniki, Department of Geology
Abstract

Stress transfer due to the coseismic slip of strong earthquakes, along with fault population characteristics, constitutes one of the most determinative factors for evaluating the occurrence of future events. The stress Coulomb (ΔCFF) evolutionary model in Mygdonia basin (N.Greece) is based on the coseismic changes of strong earthquakes (M≥6.0) from 1677 until 1978 and the tectonic loading expressed with slip rates along major faults. In the view of stress transfer mechanisms, ΔCFF is also calculated onto fault planes, along with the segmented fault zone from Thessaloniki to Gerakarou and N.Apollonia (TG-NAp FZ). Normal fault segments bound the basin from the south and currently compose the most active neotectonic zone. The association of the spatial distribution of seismicity (2000-2014) with the stress enhanced areas is also investigated. Results demonstrate that the earthquake locations are strongly influenced by the stress transfer from past strong earthquakes and their focal properties. Since the stress build-up occurs fast, results are discussed in terms of hazard assessment by defining potential locations for future events.

Article Details
  • Section
  • Seismology
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.

Downloads
Download data is not yet available.
References
Chatzipetros, A. and Pavlides, S., 1998. A Quantitative Morphotectonic Approach to the study of
active faults, Mygdonia basin, Northern Greece, Bul.Geol.Soc.
Deng, J. and Sykes, L., 1997. Evolution of the stress field in southern California and triggering of
moderate–size earthquakes: A 200-year perspective, J. Geophys. Res., 102, 9859-9886.
Erikson, L., 1986. User’s manual for DIS3D: a three-dinensional dislocation program with
applications to faulting in the Earth, MSc Thesis, Standford University, 67.
Goldsworthy, M. and Jackson, J., 2001. Migration of activity within normal fault systems: examples
from the Quaternary of mainland Greece, J. Struct. Geol., 23(2), 489-506.
Gkarlaouni, C., Papadimitriou, E., Karakostas, V., Kilias, A. and Lasocki, S., 2015. Fault population
recognition through microseismicity in Mygdonia region (northern Greece), Bollettino di
Geofisica Teorica ed Applicata, 56 (3) 367-382, doi: 10.4430/bgta0153.
Hanks, T. and Kanamori, H., 1979. A moment magnitude scale, J.Geophys.Res., 34, 2348-2350.
King, G., Stein, R. and Lin, J., 1994. Static stress changes and the triggering of earthquakes, Bull.
Seismol. Soc. Am., 84, 935-953.
Kissel, C., Laj, C. and Muller, C., 1985. Tertiary geodynamical evolution of northwestern Greece:
paleomagnetic results, Earth Plant. Sci. Lett., 72, 190-204.
Kotzev, V., Nakov, R., Georgiev, T., Burchfiel, B. and King, R., 2001. Crustal motion and strain
accumulation in western Bulgaria, Tectonophysics, 413, 189-200.
Martinod, J., Hatzfeld, D., Savvaidis, P. and Katsambalos, K., 1997. Rapid N-S extension in the
Mygdonian graben (Northern Greece) deduced from repeated geodetic surveys, Geophys.
Res. Letters, 24(24), 3293-3296.
Okada, Y., 1992. Internal deformation due to shear and tensile faults in a half space, Bull. Seism.
Soc. Am., 82, 1018-1040.
Papazachos, B. and Papazachou, C., 2003. The earthquakes of Greece, Ziti Publication, 304,
Thessaloniki.
Papazachos, B.C., Scordilis, E.M., Panagiotopoulos, D.G., Papazachos, C.B. and Karakaisis, G F.,
Global relations between seismic fault parameters and moment magnitude of
earthquakes, Bull. Geol. Soc. Greece, 36, 1482-1489.
Paradisopoulou, P., Papadimitriou, E. and Mirek, J., (accepted). Signifficant earthquakes near the
city of Thessaloniki (N.Greece) and probability distribution on faults, Bull. Geol. Soc.
Greece.
Pavlides, S. and Kilias, A., 1987. Neotectonic and active faults along the Serbomacedonian zone
(SE Chalkidiki, northern Greece), Ann.Tectonicae, 1, 97-104.
Scholz, C.H., 2002. The mechanics of earthquakes and faulting, Cambridge University press,
Cambridge, 439.
Soufleris, C. and Steward, G., 1981. A source study of the Thessaloniki (northern Greece) 1978
earthquake sequence, Geophys. J. R. Astron. Soc., 67, 343-358.
Stein, R., 1999. The role of stress transfer in earthquake occurrence, Nature, 402, 605-609.
Steketee, J., 1958. On Voltera’s dislocations in a semi-infinite elastic medium, Can J Phys, 36, 192-205.
Toda, S., Stein, R., Reasenberg, A., Dieterich, H. and Yoshida, A., 1998. Stress transferred by the
Mw=6.9 Kobe, Japan, shock: Effect on aftershocks and future earthquake probabilities,
J. Geophys. Res., 103, 24.543-24.565.
Tranos, M., Papadimitriou, E. and Kilias, A., 2003. Thessaloniki-Gerakarou fault zone (TGFZ): the
western extension of the 1978 Thessaloniki earthquake fault (northern Greece) and seismic
hazard assessment, J. Struct. Geol., 25, 2109-2123.
Zervopoulou, A. and Pavlides, S., 2005. Morphotectonic study of the broader area of Thessaloniki
for the cartography of neotectonic faults, Bull. Geol. Soc. Greece, XXXVIII, 30-41.
Most read articles by the same author(s)