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| Titel |
A study on the effect of the ground acceleration of the ground acceleration on landslide susceptibility maps |
| VerfasserIn |
Ozgur Das, Harun Sonmez, Candan Gokceoglu, Hakan Nefeslioglu |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250036742
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| Zusammenfassung |
| Particularly in the last decade, landslide susceptibility and hazard maps have been
used for urban planning and site selection of infrastructures. However, the use of
seismic activity in susceptibility analysis is still open to discussion. For the reason,
the purpose of the study is to investigate the effect of the seismic activity on the
landslide susceptibility. For the purpose of the study, a series of stability analysis based
on circular failure and infinite slope model were performed. By employing the
relation of the ratio of decrease in stability based on slope and acceleration, the
landslide susceptibility map for two scenario earthquakes (Ms = 5.5 and Ms = 7.5) was
produced for a seismically active and landslide-prone area (Kelkit Valley, NE Turkey).
The landslide susceptibility of the study area is mainly controlled by lithological
properties. When making a comparison between the landslide susceptibility map at static
condition and the landslide susceptibility maps including seismic effects, a considerable
decrease in the number of grid cells of low susceptibility classes for the landslide
susceptibility maps including seismic effects was observed, and the number of grid cells
of high susceptibility classes was increased. Additionally, landslide hazard maps
were produced by using the occurrence probabilities of two scenario earthquakes in
time intervals such as 10, 50, 75 and 100 years. The hazard maps are becoming
closer to the susceptibility map during earthquake, when time intervals increase. |
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