Advertisement

Nodal patterns in the seismic response of sedimentary valleys

  • J. FloresEmail author
Article

Abstract.

Sedimentary basins, where many large cities in the world are built, have very soft terrains. When an intense seism of long duration hits the sedimentary basin, a nodal pattern, in which regions of high seismic wave amplitudes alternate with regions where these amplitudes are very small and even null, is formed. This nodal pattern, which leads to the so called “pockets of damage”, is always observed, for example, in Mexico City. In this paper the PR mode, in which P-waves in the soft terrain are coupled to the Rayleigh wave produced in the interface with the harder subsoil underneath it, is discussed. It is proposed that this coupled mode is the culprit of the enormous damage observed in sedimentary basins due to their peculiar seismic response.

Keywords

European Physical Journal Special Topic Rayleigh Wave Sedimentary Basin Mexico City Seismic Response 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. J. Flores, O. Novaro, T.H. Seligman, Nature 326, 783 (1987) Google Scholar
  2. J. Flores, O. Novaro, T.H. Seligman, Nature 330, 25 (1987) Google Scholar
  3. T.H. Seligman, J.A. Álvarez-Tostado, J.L. Mateos, J. Flores, O. Novaro, Geophys. J. Int. 99, 789 (1989) Google Scholar
  4. O. Novaro, T.H. Seligman, J.M. Álvarez-Tostado, J.L. Mateos, J. Flores, Bull. Seismol. Soc. Amer. 80, 239 (1990) Google Scholar
  5. J. Flores, J.M. Álvarez-Tostado, O. Novaro, J.L. Mateos, T.H. Seligman, Symmetries in Physics, edited by K.B. Wolf and A. Frank (Springer Verlag, 1992), p. 327 Google Scholar
  6. J.L. Mateos, J. Flores, O. Novaro, J.M. Álvarez-Tostado, T.H. Seligman, Tectonophysics 218, 247 (1993) Google Scholar
  7. J.L. Mateos, J. Flores, O. Novaro, T.H. Seligman, J.M. Álvarez-Tostado, Geophys. J. Int. 113, 449 (1993) Google Scholar
  8. G. Báez, J. Flores, J.L. Mateos, R.A. Méndez-Sánchez, O. Novaro, T.H. Seligman, Bull. Seismol. Soc. Amer. 84, 2015 (1994) Google Scholar
  9. J.L. Mateos, O. Novaro, T.H. Seligman, J. Flores, Geophys. J. Int. 129, 212 (1997) Google Scholar
  10. C. Lomnitz, J. Flores, O. Novaro, T.H. Seligman, R. Esquivel, Bull. Seismol. Soc. Amer. 89, 14 (1999) Google Scholar
  11. F.J. Chávez-García, P.Y. Bard, Bull. Seismol. Soc. Amer. 79, 1718 (1993) Google Scholar
  12. F.J. Sánchez-Sesma, F. Luzón, Geophys. J. Int. 124, 209 (1996) Google Scholar
  13. R.J. Marsal, M. Mazari, The Subsoil of Mexico City (UNAM, Mexico, 1959) Google Scholar
  14. F. Press, M. Ewing, Geophysics 16, 416 (1951) Google Scholar
  15. P. Bodin, J. Gomberg, S.K. Singh, M. Santoyo, Bull. Seismol. Soc. Amer. 87, 528 (1997) Google Scholar
  16. A. Morales, L. Gutiérrez, J. Flores, Amer. J. Phys. 69, 517 (2001) Google Scholar
  17. A. Morales, J. Flores, L. Gutiérrez, R.A. Méndez-Sánchez, J. Acoust. Soc. Amer. 112, 1961 (2002) Google Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  1. 1.Instituto de Física, Universidad Nacional Autónoma de MéxicoMexicoMexico

Personalised recommendations