Evidence of complex site effects and soil non-linearity numerically estimated by 2D vs 1D seismic response analyses in the city of Xanthi

2016 ◽  
Vol 87 ◽  
pp. 101-115 ◽  
Author(s):  
Olga Stamati ◽  
Nikolaos Klimis ◽  
Theologos Lazaridis
Keyword(s):  
Seismic Response ◽  
Site Effects ◽  
The City

Parametric analysis of the seismic response of a 2D sedimentary valley: implications for code implementations of complex site effects

2005 ◽  
Vol 25 (4) ◽  
pp. 303-315 ◽  
Author(s):  
Konstantia Makra ◽  
Francisco J. Chávez-García ◽  
Dimitrios Raptakis ◽  
Kyriazis Pitilakis
Keyword(s):  
Seismic Response ◽  
Parametric Analysis ◽  
Site Effects

The 1983 Liege Earthquake: Damage Distribution and Site Effects

1990 ◽  
Vol 6 (4) ◽  
pp. 713-737 ◽  
Author(s):  
D. Jongmans ◽  
M. Campillo
Keyword(s):  
Site Effects ◽  
Large Scale ◽  
Site Response ◽  
Dominant Frequency ◽  
Small Scale ◽  
Eastern United States ◽  
Frequency Range ◽  
Damage Distribution ◽  
Damage Data ◽  
The City

On November 8, 1983, a moderate magnitude (Ml=4.9) earthquake struck Liege (Belgium). A damage study has shown that site effects at different scales have played an important role in amplifying ground motion. On a large scale, the damage distribution has been determined by the presence of a large Carboniferous syncline beneath the city as shown by 2D numerical modeling. On a small scale, the main damage concentrations can be correlated with local superficial deposits which have amplified ground motions in the frequency range of buildings. A geophysical survey was carried out to measure the shear wave velocity of the different formations. Site response computations were made at numerous sites in order to estimate the possible amplification and to compare the results with the damage. It was shown that the spectral amplifications computed in the dominant frequency range of the buildings are consistent with the damage data. In very affected areas, 1D amplifications of 4 to 6 were obtained and in some cases 2D effects may have occurred. The Liege earthquake, taking place in the intraplate region of Northwestern Europe, presents a significant interest to other similar areas as the eastern United States.

Microtremor study of site effects and soil-structure resonance in the city of Ljubljana (central Slovenia)

2009 ◽  
Vol 8 (3) ◽  
pp. 571-592 ◽  
Author(s):  
Andrej Gosar ◽  
Janez Rošer ◽  
Barbara Šket Motnikar ◽  
Polona Zupančič
Keyword(s):  
Site Effects ◽  
Soil Structure ◽  
The City ◽  
Central Slovenia

scholarly journals Seismic response analysis for Romanian extra-carpathian sedimentary areas

2021 ◽  
pp. 83-92
Author(s):  
Gheorghe Marmureanu ◽  
Carmen Ortanza Cioflan ◽  
Bogdan Felix Apostol
Keyword(s):  
Seismic Response ◽  
Ground Motion ◽  
Site Effects ◽  
Spectral Characteristics ◽  
Response Analysis ◽  
Seismic Events ◽  
Seismic Response Analysis ◽  
Local Conditions ◽  
Sedimentary Deposits ◽  
New Perspective

The seismic response of the ground motion is analysed using processed recordings and related spectral characteristics. The analysis is carried out for few representative different sites, with different geological local conditions. Data used are recordings from the last strongest seismic events (1986, August 30, Mw = 7.1, 1990, May 30, Mw = 6.9 and 1990, May 31, Mw=6.4). The approach used herein to assess the particular features of the seismic effects could open a new perspective in microzoning and risk studies. In the context of Vrancea-intermediate depth seismicity, whose effects are encountered at long epicentral distances, the choice of these sites is fully justified. Therefore the paper intends to focus on the particularities in the site effects that occur due to the sedimentary deposits’ oscillation under strong seismic ground motion for different areas. The spectral amplification factors are introduced in order to have a quantitative representation with respect to the variability of site effects.

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