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Basin effects on ground motion: the case of a high-resolution experiment in Cephalonia (Greece)

Urheber*innen

Theodoulidis,  N.
External Organizations;

Cultrera,  G.
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Cornou,  C.
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Bard,  P.-Y.
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/persons/resource/tobibo

Boxberger,  Tobias
2.6 Seismic Hazard and Stress Field, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

DiGiulio,  G.
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Imtiaz,  A.
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Kementzetzidou,  D.
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Makra,  K.
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Andreou,  C.
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/persons/resource/bauz

Bauz,  Ralf
2.1 Physics of Earthquakes and Volcanoes, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bayle,  S.
External Organizations;

/persons/resource/bindi

Bindi,  Dino
2.6 Seismic Hazard and Stress Field, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Cara,  F.
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Cogliano,  R.
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Cretin,  C.
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Fodarella,  A
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/persons/resource/guenth

Günther,  E.
2.1 Physics of Earthquakes and Volcanoes, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Konidaris,  A.
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Nicole,  J.-M.
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/persons/resource/parolai

Parolai,  Stefano
2.6 Seismic Hazard and Stress Field, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/pilz

Pilz,  M.
2.6 Seismic Hazard and Stress Field, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Pucillo,  S.
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Riccio,  G.
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Savvaidis,  A.
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, 

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Zitation

Theodoulidis, N., Cultrera, G., Cornou, C., Bard, P.-Y., Boxberger, T., DiGiulio, G., Imtiaz, A., Kementzetzidou, D., Makra, K., Andreou, C., Bauz, R., Bayle, S., Bindi, D., Cara, F., Cogliano, R., Cretin, C., Fodarella, A., Günther, E., Konidaris, A., Nicole, J.-M., Parolai, S., Pilz, M., Pucillo, S., Riccio, G., Savvaidis, A. (2018): Basin effects on ground motion: the case of a high-resolution experiment in Cephalonia (Greece). - Bulletin of Earthquake Engineering, 16, 2, 529-560.
https://doi.org/10.1007/s10518-017-0225-4


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_2837897
Zusammenfassung
In this study data and results of a high-resolution experiment in Cephalonia (Greece) regarding empirical basin effects are presented. A total of 59 velocimeters and 17 accelerometers were deployed in the basin of Argostoli Cephalonia (Greece), for a period of 7 months (September 2011–April 2012). Due to high seismicity of the western Greece and surrounding area this array recorded thousands of local, regional and global events. Data used in this work come from a selection of 162 regional and local earthquakes, 3 km ≤ R ≤ 600 km, with magnitude range, 1.0 ≤ M ≤ 5.2. Based on high signal-to-noise ratio recordings and two selected reference stations, variation of several intensity measures (PGA, PGV, Arias Intensity, Cumulative Absolute Velocity), significant duration, HVSR and SSR of ground motion recordings on soil sites within the basin is carefully examined for a range of frequencies of engineering interest. Comparison of results with a detailed 2D geologic model shows a good consistency both in amplification and frequency domain. Influence of “reference” site on ground motion variation of soil sites is also discussed in light of our results. Finally, it is suggested that 2D or/and 3D theoretical modeling should be performed given the availability of geological and geophysical parameters to define a realistic model of the basin. Results of this study can undoubtedly serve in model validation and improvement of ground motion simulation tools.