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| Titel |
Rockfall hazard and risk assessment: an example from a high promontory at the historical site of Monemvasia, Greece |
| VerfasserIn |
H. Saroglou, V. Marinos, P. Marinos, G. Tsiambaos |
| 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 ; 12, no. 6 ; Nr. 12, no. 6 (2012-06-01), S.1823-1836 |
| Datensatznummer |
250010915
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| Publikation (Nr.) |
 copernicus.org/nhess-12-1823-2012.pdf |
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| Zusammenfassung |
The paper presents the kinematics of rock instability of a high limestone
promontory, where the Monemvasia historical site is situated, in Peloponnese in
Southern Greece. The instability phenomena poses a significant threat to the
town located at the base of the slope. Rockfall episodes occurred in the
past due to the relaxation of the high cliff, whereas significant
undermining of the castle frontiers has been observed at the slope crest.
The predominant types of instability are of planar, wedge and toppling
failure of medium to large blocks. In order to investigate the existing
stability conditions and decide upon the protection measures, stability and
rockfall analyses were carried out for numerous slope sections under
different loading conditions and protection measures were suggested.
A rock-fall risk rating system is proposed, which is based on morphological
and structural criteria of the rock mass and on vulnerability and
consequences. The rating system is applied for individual sections along the
slope and a risk map was produced, which depicted areas having different
degree of risk against rockfall occurrences. |
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