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| Titel |
Seismic triggering of landslides. Part B: Simulation of dynamic failure processes |
| VerfasserIn |
H.-B. Havenith, A. Strom, F. Calvetti, D. Jongmans |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 3, no. 6 ; Nr. 3, no. 6, S.663-682 |
| Datensatznummer |
250001321
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| Publikation (Nr.) |
 copernicus.org/nhess-3-663-2003.pdf |
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| Zusammenfassung |
| From field observations it is possible
to establish correlations between geological conditions and landslide
occurrence. However, in general, it is difficult to assess the affect of
individual factors on slope instability because of their mutual
interaction. In addition, the dynamic effect of propagating seismic waves
significantly increases the complexity of the slope stability problem.
Wave diffraction, reflection and focusing effects are dependent on local
geological conditions and make it difficult to analyse dynamic sliding
mechanisms using field observations alone. As a consequence, in order to
examine the influence of various geological and seismic factors on slope
movements, it is often necessary to produce numerical models. This paper
describes the results of such models as applied to two case studies in
Kyrgyzstan: the Ananevo rockslide, located in granite, and the Suusamyr
debris slump-flow, situated within soft sediments (see Part A: Havenith et
al., 2003). Discrete element modelling (UDEC), adapted both to the
discontinuous character of fractured rock and to the heterogeneity of
layered mediums, was used. This permitted simulation of deformation
mechanisms, including seismically induced bending, block tilting, and
slip. Particular attention was paid to the interaction between deformation
mechanisms, site-specific amplification effects, and subsurface structure. |
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