Geo-Characterization at selected accelerometric stations in Crete (Greece) and comparison of earthquake data recordings with EC8 elastic spectra

A. Savvaidis, B. Margaris, N. Theodoulidis, V. Lekidis, Ch. Karakostas, C. Loupasakis, D. Rozos, P. Soupios, Maria-Daphne Mangriotis, U. Dikmen, Par. Tsangaratos, E. Kokinou, A. Vafidis, Th. Rondoyanni, I. Kalogeras, S. Koutrakis, A. Sarris, N. Papadopoulos

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

To estimate the seismic response according to Eurocode (EC8) and almost all other national codes, site conditions have to be properly characterized so that soil amplification and the corresponding peak ground motion can be calculated.

In this work, different geophysical and geotechnical methods are combined in order to define the detailed ground conditions in selected sites of the Hellenic Accelerometric Network (HAN) in Crete. For this purpose, the geological information of the sites and shear wave velocity, calculated from surface wave measurements, is used. Additionally, ground acceleration data recorded through HAN have been utilized from intermediate depth earthquakes in the broader area of South Aegean Sea.

Using the recorded ground motion data and the procedure defined in EC8, the corresponding elastic response spectrum is calculated for the selected sites. The resulting information is compared to the values defined in the corresponding EC8 spectrum for the seismic zone that includes the island of Crete.

The comparison shows that accurate definition of ground type through geological, geotechnical and geophysical investigations is important. However, our current comparison focuses on the distribution of values rather than the absolute values of EC8-prescribed spectra, and the results should be considered in this context.

Original languageEnglish
Pages (from-to)88-103
Number of pages16
JournalCentral European Journal of Geosciences
Volume6
Issue number1
DOIs
Publication statusPublished - Mar 2014

Keywords

  • geoinformation
  • earthquake hazard
  • Eurocode-EC8
  • environmental protection
  • Crete
  • GROUND-MOTION
  • DEPTH
  • AMPLIFICATION
  • ATTENUATION
  • INVERSION
  • VELOCITY
  • KYTHERA
  • ARC

Cite this

Savvaidis, A., Margaris, B., Theodoulidis, N., Lekidis, V., Karakostas, C., Loupasakis, C., Rozos, D., Soupios, P., Mangriotis, M-D., Dikmen, U., Tsangaratos, P., Kokinou, E., Vafidis, A., Rondoyanni, T., Kalogeras, I., Koutrakis, S., Sarris, A., & Papadopoulos, N. (2014). Geo-Characterization at selected accelerometric stations in Crete (Greece) and comparison of earthquake data recordings with EC8 elastic spectra. Central European Journal of Geosciences, 6(1), 88-103. https://doi.org/10.2478/s13533-012-0163-2