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| Titel |
Combined rock slope stability and shallow landslide susceptibility assessment of the Jasmund cliff area (Rügen Island, Germany) |
| VerfasserIn |
A. Günther, C. Thiel |
| 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 ; 9, no. 3 ; Nr. 9, no. 3 (2009-05-08), S.687-698 |
| Datensatznummer |
250006778
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| Publikation (Nr.) |
 copernicus.org/nhess-9-687-2009.pdf |
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| Zusammenfassung |
| In this contribution we evaluated both the structurally-controlled failure
susceptibility of the fractured Cretaceous chalk rocks and the
topographically-controlled shallow landslide susceptibility of the overlying
glacial sediments for the Jasmund cliff area on Rügen Island, Germany.
We employed a combined methodology involving spatially distributed
kinematical rock slope failure testing with tectonic fabric data, and both
physically- and inventory-based shallow landslide susceptibility analysis.
The rock slope failure susceptibility model identifies areas of recent cliff
collapses, confirming its value in predicting the locations of future
failures. The model reveals that toppling is the most important failure type
in the Cretaceous chalk rocks of the area. The shallow landslide
susceptibility analysis involves a physically-based slope stability
evaluation which utilizes material strength and hydraulic conductivity data,
and a bivariate landslide susceptibility analysis exploiting landslide
inventory data and thematic information on ground conditioning factors. Both
models show reasonable success rates when evaluated with the available
inventory data, and an attempt was made to combine the individual models to
prepare a map displaying both terrain instability and landslide
susceptibility. This combination highlights unstable cliff portions lacking
discrete landslide areas as well as cliff sections highly affected by past
landslide events. Through a spatial integration of the rock slope failure
susceptibility model with the combined shallow landslide assessment we
produced a comprehensive landslide susceptibility map for the Jasmund cliff
area. |
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