Effects of surface topography on seismic ground response in the Egion (Greece) 15 June 1995 earthquake

Athanasopoulos, George; Pelekis, Panagiotis; Leonidou, E.A.

doi:10.1016/s0267-7261(98)00041-4

Cited by 111 publications

(48 citation statements)

References 15 publications

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“…By comparing the shaking effects of a series of events, several surface features constantly reveal wave amplifications related to the local geological conditions. The latter are commonly called Site Effects, which are generally associated with enhanced vibration within sediment filled valleys (Borcherdt, 1970;Bard, 1995), but also hills and mountain ridges revealed to amplify ground motion (Bard, 1995;Spudich et al, 1996;Athanasopoulos et al, 1999). Evidence for topographic amplification effects on slope stability were shown by slope failures close to convex crests caused by the El Asnam earthquake in 1980 (Durville and Méneroud, 1982), by earthquake-triggered rock falls preferentially affecting ridge crests (e.g.…”

Section: Introductionmentioning

confidence: 99%

Seismic triggering of landslides, Part A: Field evidence from the Northern Tien Shan

Havenith

Strom

Jongmans

et al. 2003

Nat. Hazards Earth Syst. Sci.

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Abstract. Landslides triggered by strong earthquakes often caused most of the global damage and most of all casualties related to the events, such as shown by the M = 7.7 Peru earthquake in 1970, by the M = 7.6 El Salvador earthquake in 2001 or by the M = 7.4 Khait (Tajikistan) earthquake in 1949. The obvious impact of a landslide on the population is directly related to its movement. Yet, prediction of future failure potential and hence future risk to population is necessary in order to avoid further catastrophes and involves the analyses of the origin of seismic instability. The seismic landslide potential is mainly determined by the interaction between the regional seismic hazard and local geological conditions. At a local scale, seismic factors interfering with geological conditions can produce site-specific ground motions. The influence of such Site Effects on instability is the principal topic of this paper, which is divided into two parts, A and B. The present Part A is concerned with the correlation of field data with observed instability phenomena. Field data were obtained on mainly three landslide sites in the Northern Tien Shan Mountains in Kyrgyzstan, Central Asia. Geophysical prospecting, earthquake recordings, geological observation, trenching and geotechnical tests were the main investigation tools. The collected information gives an insight in the geological background of the slope failure and allows us to roughly infer failure mechanisms from field evidence. A detailed analysis of the susceptibility of a mechanism to specific geological conditions will be shown in Part B.

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Section: Introductionmentioning

confidence: 99%

Seismic triggering of landslides, Part A: Field evidence from the Northern Tien Shan

Havenith

Strom

Jongmans

et al. 2003

Nat. Hazards Earth Syst. Sci.

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“…Thus, the geometry of the slope is favourable for slope failures. Especially the height and angle of slopes, the presence of convexity on its surface may be responsible for topographic site effects (Athanasopoulos et al, 1999;Bouckovalas and Papadimitriou, 2005). The progressive role of discontinuities has a major impact on the stiffness of the rock mass and can become potential sliding planes for the detachable blocks but is not enough for the initiation of a rockfall (Baillifard et al, 2003;Stead and Wolter, 2015;Mavrouli and Corominas, 2015).…”

Section: Application Of Methods In North Peloponnesementioning

confidence: 99%

Techniques of Rockfall Inventory in Earthquake Prone Rock Slopes

Zygouri

Koukouvelas

2017

geosociety

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“…Figure 16 shows some of the collapsed buildings located on hilltops in Zone 1A along the Tatarreg River valley. Several past earthquakes around the world have caused similar damage concentrations along the tops of steep slopes and on hilltops, for instance, the 1980 Irpinia earthquake (M s ¼ 6.9) (Athanasopoulos 1998), the 1999 Parnitha (Athens) earthquake (M s ¼ 5.9) (Gazetas et al 2002, Assimaki et al 2005, the 2003 Bingöl, Turkey, earthquake (M s ¼ 6.4) (Aydan at al. 2003), and the 2003 San Simeon, California, earthquake (M w ¼ 6.5) (McCrink et al 2010).…”

Section: Site Effects From Topographic Featuresmentioning

confidence: 99%

The Effects of Building Characteristics and Site Conditions on the Damage Distribution in Boumerdès after the 2003 Algeria Earthquake

et al. 2012

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This study highlights the major contributing factors to the observed damage distribution in the city of Boumerdès after the 2003 Algeria earthquake. The results of field investigations and statistical analyses show that a majority of the damaged buildings, mostly mid-rise reinforced concrete (RC) moment-frame systems, were located on steep slopes and small hilltops, along river valleys. The horizontal-to-vertical (H/V) ratios from free-field microtremor measurements at these sites did not show clear results. In contrast, buildings with the same structural characteristics located on flat ground did not suffer much damage, and clear peaks were observed from the H/V ratio curves. The amplification effects of topography have not been incorporated into the revised Algerian seismic code, but the results from this study show the importance of considering this factor when designing new buildings for earthquake resistance.

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Effects of surface topography on seismic ground response in the Egion (Greece) 15 June 1995 earthquake

Cited by 111 publications

References 15 publications

Seismic triggering of landslides, Part A: Field evidence from the Northern Tien Shan

Seismic triggering of landslides, Part A: Field evidence from the Northern Tien Shan

Techniques of Rockfall Inventory in Earthquake Prone Rock Slopes

The Effects of Building Characteristics and Site Conditions on the Damage Distribution in Boumerdès after the 2003 Algeria Earthquake

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