Top > JDR > Estimation of S-Wave Velocity Profiles at Lima City, Peru Usin ...

single-dr.php

JDR Vol.9 No.6 pp. 931-938
(2014)
doi: 10.20965/jdr.2014.p0931

Paper:

Views over last 60 days: 701

Estimation of S-Wave Velocity Profiles at Lima City, Peru Using Microtremor Arrays

Selene Quispe*, Kosuke Chimoto*, Hiroaki Yamanaka*,
Hernando Tavera**, Fernando Lazares***, and Zenon Aguilar***

*Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan

**Geophysical Institute of Peru (IGP), Lima, Peru

***Japan Peru Center for Earthquake Engineering and Disaster Mitigation (CISMID), Faculty of Civil Engineering, National University of Engineering, Lima, Peru

Received:
July 4, 2014
Accepted:
September 20, 2014
Published:
December 1, 2014
Creative Commons License
Keywords:
Lima city, microtremors, S-wave velocity profiles, site response, AV s10
Abstract
Microtremor exploration was performed around seismic recording stations at five sites in Lima city, Peru in order to know the site amplification at these sites. The Spatial Autocorrelation (SPAC) method was applied to determine the observed phase velocity dispersion curve, which was subsequently inverted in order to estimate the 1-D S-wave velocity structure. From these results, the theoretical amplification factor was calculated to evaluate the site effect at each site. S-wave velocity profiles at alluvial gravel sites have S-wave velocities ranging from ∼500 to ∼1500 m/s which gradually increase with depth, while Vs profiles at sites located on fine alluvial material such as sand and silt have Swave velocities that vary between ∼200 and ∼500 m/s. The site responses of all Vs profiles show relatively high amplification levels at frequencies larger than 3 Hz. The average transfer function was calculated to make a comparison with values within the existing amplification map of Lima city. These calculations agreed with the proposed site amplification ranges.
Cite this article as:
S. Quispe, K. Chimoto, H. Yamanaka, H. Tavera, F. Lazares, and Z. Aguilar, “Estimation of S-Wave Velocity Profiles at Lima City, Peru Using Microtremor Arrays,” J. Disaster Res., Vol.9 No.6, pp. 931-938, 2014.
Data files:
References
  1. [1] P. Repetto, I. Arango, and H. B. Seed, “Influence of site characteristics on building damage during the October 3, 1974 Lima earthquake,” Report-Earthquake Engineering Research Center, College of Engineering, University of California, Berkeley, California, EERC 80/41, 1980.
  2. [2] Z. Aguilar, “Seismic Microzonation of Lima,” Japan-Peru Workshop on Earthquake Disaster Mitigation, Japan-Peru Center for Earthquake Engineering and Disaster Mitigation (CISMID), Faculty of Civil Engineering, National University of Engineering, Lima, Peru, 2005.
  3. [3] T. Sekiguchi, D. Calderon, S. Nakai, Z. Aguilar, and F. Lazares, “Evaluation of Surface Soil Amplification for Wide areas in Lima, Peru,” Journal of Disaster Research, Vol.8 No.2, pp. 259-265, 2013.
  4. [4] D. Calderon, T. Sekiguchi, S. Nakai, Z. Aguilar, and F. Lazares, “Study of Soil Amplification Based on Microtremor and Seismic Records in Lima Peru,” Journal of Japan Association for Earthquake Engineering, Vol.12, No.2, pp. 1-20, 2012.
  5. [5] K. Aki, “Space and Time Spectra of Stationary Stochastic Waves, with Special Reference to Microtremors,” Bulletin Earthquake Research Institute Tokyo University, Vol.25, pp. 415-57, 1957.
  6. [6] CISMID, “Study of the Vulnerability and Seismic Risk in 42 districts of Lima and Callao,” Japan–Peru Center for Earthquake Engineering Research and Disaster Mitigation, National University of Engineering, Lima, Peru, 2005 (in Spanish).
  7. [7] W. R. Stephenson, R. A. Benites, and P. N. Davenport, “Localized coherent response of the La Molina basin (Lima, Peru) to earthquakes, and future approaches suggested by Parkway basin (New Zealand) experience,” Solid Dynamics and Earthquake Engineering, Vol.29, No.10, pp. 1347-1357, 2009.
  8. [8] J. P. Le Roux, C. Tavares, and F. Alayza, “Sedimentology of the Rímac-Chillón alluvial fan at Lima, Peru, as related to Plio-Pleistocene sea-level changes, glacial cycles and tectonics,” Journal of South American Earth Sciences, Vol.13, pp. 499-510, 2000.
  9. [9] A. Martínez and F. Porturas, “Planos Geotécnicos para Lima, Perú, Análisis y Visión en Ingeniería Sísmica,” Pontificia Universidad Católica del Perú, Lima, Perú, 1975 (in Spanish).
  10. [10] R. N. Grutas and H. Yamanaka, “Shallow shear-wave velocity profiles and site response characteristics from microtremor array measurements in Metro Manila, the Philippines,” Exploration Geophysics, CSIRO Publishing, 2012.
  11. [11] H. Okada, “The microtremor survey method,” Geophysical Monograph Series No. 12, Society of Exploration Geophysicists, 2003.
  12. [12] H. Yamanaka, “Inversion of surface-wave phase velocity using hybrid heuristic search method,” Butsuri Tansa (Geophysical exploration), Vol.60, pp. 265-75, 2007 (in Japanese with English abstract).
  13. [13] C. Kitsunezaki, Y. Kobayashi, T. Ikawa, M. Horike, T. Saito, T. Kurota, K. Yamabe, and K. Okuzumi, “Estimation of P- and S-wave velocities in deep soil deposits for evaluating ground vibrations in earthquake,” Journal of the Japan Society for Natural Disaster Science, Vol.9, No.3, pp. 1-17, 1990.
  14. [14] S. Quispe, H. Yamanaka, Z. Aguilar, F. Lazares, and H. Tavera, “Preliminary Analysis for Evaluation of Local Site Effects in Lima city, Peru from Ground Motion Data by Using the Spectral Inversion Method,” Journal of Disaster Research, Vol.8 No.2, pp. 243-251, 2013.

Creative Commons License  This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.

*This site is desgined based on HTML5 and CSS3 for modern browsers, e.g. Chrome, Firefox, Safari, Edge, Opera.

Last updated on Oct. 01, 2024