The Mw6.4 Achaia–Elia (Greece) earthquake on 8 June 2008 was a right-lateral strike-slip event on a nearly vertical faul. Moment tensor solutions coupled with geologic structure and aftershock distributions suggest a fault strike of approximately 210° on a previously unmapped fault. Rupture appears to have been concentrated over a 10–25 km depth range and did not break the surface. The northern rupture limit appears to correspond to a NW-striking normal fault near the Kato Achaia coastline. The mainshock was recorded by 27 accelerometers at distances from the surface projection of the fault ranging from approximately 15 to 350 km. The data demonstrate faster distance attenuation than predicted by contemporary Greek ground motion prediction equations (GMPEs). On the other hand, an NGA GMPE generally captures the distance attenuation but shows underprediction bias at short and long periods. Despite the presence of a range of site conditions at recording stations in the city of Patras, we find no obvious effect of sediment depth on response spectra. We show the possible presence of rupture directivity at the north end of this bilateral rupture, but no apparent effect at the southern end. We described several relatively well-documented incidents of nonground failure and ground failure associated with liquefaction/lateral spreading and landslides.
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May 01, 2010
The 8 June 2008 Mw6.5 Achaia–Elia, Greece Earthquake: Source Characteristics, Ground Motions, and Ground Failure
Basil Margaris;
Basil Margaris
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
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George Athanasopoulos;
George Athanasopoulos
b
Department of Civil Engineering, University of Patras, Patras, Greece
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George Mylonakis;
George Mylonakis
M.EERI
b
Department of Civil Engineering, University of Patras, Patras, Greece
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Christos Papaioannou;
Christos Papaioannou
M.EERI
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
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Nikolaos Klimis;
Nikolaos Klimis
c
Department of Civil Engineering, Democritus University of Thrace, Xanthi, Greece
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Nikolaos Theodulidis;
Nikolaos Theodulidis
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
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Alexandros Savvaidis;
Alexandros Savvaidis
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
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Vicky Efthymiadou;
Vicky Efthymiadou
b
Department of Civil Engineering, University of Patras, Patras, Greece
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Jonathan P. Stewart
d
Civil & Environmental Engineering Dept., University of California, Los Angeles, 5731 Boelter Hall, Los Angeles, CA 90095-1593;[email protected] (corresponding author)
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Basil Margaris
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
George Athanasopoulos
b
Department of Civil Engineering, University of Patras, Patras, Greece
George Mylonakis
M.EERI
b
Department of Civil Engineering, University of Patras, Patras, Greece
Christos Papaioannou
M.EERI
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
Nikolaos Klimis
c
Department of Civil Engineering, Democritus University of Thrace, Xanthi, Greece
Nikolaos Theodulidis
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
Alexandros Savvaidis
a
ITSAK—Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece
Vicky Efthymiadou
b
Department of Civil Engineering, University of Patras, Patras, Greece[email protected] (corresponding author)
Publisher: Earthquake Engineering Research Institute
Received:
22 Jan 2009
Accepted:
16 Jun 2009
First Online:
01 Jun 2020
Online ISSN: 1944-8201
Print ISSN: 8755-2930
© 2010 Earthquake Engineering Research Institute
Earthquake Engineering Research Institute
Earthquake Spectra (2010) 26 (2): 399–424.
Article history
Received:
22 Jan 2009
Accepted:
16 Jun 2009
First Online:
01 Jun 2020
Citation
Basil Margaris, George Athanasopoulos, George Mylonakis, Christos Papaioannou, Nikolaos Klimis, Nikolaos Theodulidis, Alexandros Savvaidis, Vicky Efthymiadou, Jonathan P. Stewart; The 8 June 2008 Mw6.5 Achaia–Elia, Greece Earthquake: Source Characteristics, Ground Motions, and Ground Failure. Earthquake Spectra 2010;; 26 (2): 399–424. doi: https://doi.org/10.1193/1.3353626
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Index Terms/Descriptors
- acceleration
- Aegean Sea
- African Plate
- aftershocks
- attenuation
- Cephalonia
- data processing
- earthquakes
- East Mediterranean
- epicenters
- Eurasian Plate
- Europe
- extension
- faults
- focus
- Greece
- ground motion
- Gulf of Corinth
- horizontal movements
- Ionian Islands
- Ionian Sea
- landslides
- liquefaction
- lithosphere
- mass movements
- Mediterranean region
- Mediterranean Sea
- normal faults
- Peloponnesus Greece
- plate tectonics
- propagation
- sediments
- slope stability
- Southern Europe
- stress fields
- strike-slip faults
- strong motion
- subduction
- thickness
- velocity
- Gulf of Patras
- Patras Greece
- Cephalonia Fault
- Achaia-Elia earthquake 2008
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