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Horizontal to vertical spectral ratio and geological conditions: an analysis of strong motion data from Greece and Taiwan (SMART-1)

Authors
Journal
Soil Dynamics and Earthquake Engineering
0267-7261
Publisher
Elsevier
Publication Date
Volume
14
Issue
3
Identifiers
DOI: 10.1016/0267-7261(94)00039-j
Keywords
  • Standard Spectral Ratio
  • (H/V) Spectral Ratio
  • Resonant Frequency
  • Greek Accelerograms
  • Smart-1 Accelerograms

Abstract

Abstract Nowadays, several research efforts have been directed towards the evaluation of the horizontal to vertical, (h/v), spectral ratio technique, following the pioneering work of Nakamura originally proposed for microtremor measurements. In the present study, an extension of this technique based on Greek and Taiwanese (SMART-1) strong motion data is attempted. Whenever possible comparisons with results obtained by the standard spectral ratio technique for the same sites are made. Regarding the Greek data it is concluded that (h/v) spectral ratio clearly distinguishes the range of resonant peaks between ‘rock’ and ‘alluvium’ sites. On the other hand, nonlinear effects that take place beneath SMART-1 array most probably obscure the expected consistency between (h/v) and standard spectral ratio technique.

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