1887

Abstract

Summary

We perform numerical simulation of the ground motion and liquefaction at several sites located at the coastal area of Atalanti Gulf (Greece). To incorporate region-specific geologic effects in the ground motion and liquefaction hazard estimates, subsurface information, particularly Vs and dynamic properties, are compiled and evaluated with the aid of geophysical methodologies and borehole testing respectively.

The possible non-linear soil behavior at the investigated sites is examined for three selected earthquakes. In two cases, real records, obtained from the NOA database, are used as input motion. In third case the input motion is computed using a stochastic simulation technique, for the scenario earthquake of the 1894 Atalanti main shock with M=7.0.

The results of the modelling show that in the case of an earthquake with magnitude Mw=5.4 all sites amplify the input signal to some degree. In case of Mw=6.7 earthquake almost all investigated sites will exhibit liquefaction initiation. An exception is two sites: one, where strong amplification of input motion by the shallow soft layers is expected; another one, located very close to the eastern segment of Atalanti fault, where obtained surface motion is not significantly changed through the structure. The Atalanti earthquake produces both effects liquefaction and amplification.

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/content/papers/10.3997/2214-4609.20141968
2014-09-08
2024-04-26
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References

  1. Beresnev, I.A. and Atkinson, G.M.
    [1998a] FINSIM: a FORTRAN program for simulating stochastic acceleration time histories from finite faults. Seismol. Res. Lett., 69, 27–32.
    [Google Scholar]
  2. [1998b] Stochastic finite-fault modelling of ground motions from the 1994 Northridge, California, earthquake. I. Vaalidation on rock sites. B. Seismol. Soc. Am, 88, 1392–1402.
    [Google Scholar]
  3. Cundy, A.B., Kortekaas, S., Dewez, T., Stewart, I., Croudace, W., Maroukian, H., Papanastassiou, D., Gaki-Papanastassiou, P., Pavlopoulos, K. and Dawson, A.
    [2000] Coastal impacts of the 1894 Gulf of Atalanti earthquakes, central Greece. Mar. Geol. Spec. Publ., 170, 3–26.
    [Google Scholar]
  4. Ganas, A., Roberts, G.P. and Memou, T.
    [1998] Segment boundaries, the 1894 ruptures and strain patterns along the Atalanti fault, central Greece. J. Geodyn., 26, 461–486.
    [Google Scholar]
  5. HAGS (Hellenic Army Geographical Service)
    [1971] Livanates Map Sheet, 1:50000. Athens.
    [Google Scholar]
  6. Iwasaki, T.
    [1986] Soil liquefaction studies in Japan: state-of-the-art. Soil Dyn. Earthq. Eng., 5(1), 1–71.
    [Google Scholar]
  7. Karastathis, V.K., Ganas, A., Makris, J., Papoulia, J., Dafnis, P., Gerolymatou, E. and Drakatos, G.
    [2007] The application of shallow seismic techniques in the study of active faults: The Atalanti normal fault, central Greece. J. of Applied Geophys, 62, 215–233.
    [Google Scholar]
  8. Matasovic, N. and Ordonez, G.A.
    [2007] D-MOD2000 – A Computer Program Package for Seismic Response Analysis of Horizontally Layered Soil Deposits, Earthfill Dams, and Solid Waste Landfills, User’s Manual. GeoMotions, LLC, Lacey, Washington, 182.
    [Google Scholar]
  9. Pantosti, D., De Martini, P.M., Papanastassiou, D., Palyvos, N., Lemeille, F. and Stavrakakis, G.
    [2001] A reappraisal of the 1894 Atalanti earthquake surface ruptures, Central Greece. Bull. Seismol. Soc. Am., 91, 760–780.
    [Google Scholar]
  10. Papaioannou, I., Papadopoulos, G.A. and Pavlides, S.
    [2004] The Earthquake of 426bc, Gulf revisited: amalgamation of two different strong earthquake events? In: Evoikos, N. (Ed.) Proceedings of the 10th International Congress, Thessaloniki, April 2004. Bulletin of the Geological Society of Greece, 36, 1477–1481.
    [Google Scholar]
  11. Park, C.B., Miller, R D. and Xia, J.
    [1999] Multichannel analysis of surface waves. Geophysics, 64, 800–808.
    [Google Scholar]
  12. Pavlides, S.B., Valkaniotis, S., Ganas, A., Keramydas, D. and Sboras, S.
    [2004] The active fault of Atalanti — Re-evaluation with new geological data. Bull. Geol. Soc. Greece, 36, 1560–1567 (in Greek).
    [Google Scholar]
  13. Roberts, S. and Jackson, J.
    [1991] Active normal faulting in central Greece: an overview. In: Roberts, A., Yielding, M. and Freeman, G. (Eds) The Geometry of Normal Faults. Geol. Sot. Sp. Publ., 56, 125–142.
    [Google Scholar]
  14. Xia, J., Miller, R.D. and Park, C.B.
    [1999] Estimation of near surface shear-wave velocity by inversion of Rayleigh waves. Geophysics, 64, 691–700.
    [Google Scholar]
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