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| Titel |
Seismic triggering of landslides, Part A: Field evidence from the Northern Tien Shan |
| VerfasserIn |
H.-B. Havenith, A. Strom, D. Jongmans, A. Abdrakhmatov, D. Delvaux, P. Tréfois |
| 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. 1/2 ; Nr. 3, no. 1/2, S.135-149 |
| Datensatznummer |
250000671
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| Publikation (Nr.) |
 copernicus.org/nhess-3-135-2003.pdf |
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| Zusammenfassung |
| 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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