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| Titel |
A study on the use of planarity for quick identification of potential landslide hazard |
| VerfasserIn |
M. H. Baek, T. H. Kim |
| 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 Sciences ; 15, no. 5 ; Nr. 15, no. 5 (2015-05-20), S.997-1009 |
| Datensatznummer |
250119475
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| Publikation (Nr.) |
 copernicus.org/nhess-15-997-2015.pdf |
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| Zusammenfassung |
| In this study we focused on identifying a geomorphological feature that
controls the location of landslides. The representation of the feature is
based on a high-resolution digital elevation model derived from the
airborne laser altimetry (LiDAR) and evaluated by the statistical analysis of
axial orientation data. The main principle of this analysis is generating
eigenvalues from axial orientation data and comparing them. The planarity, a
ratio of eigenvalues, would tell the degree of irregularity on the ground
surface based on their ratios. Results are compared to the recent landslide
case in Korea in order to evaluate the feasibility of the proposed
methodology in identifying the potential landslide hazard. The preliminary
landslide hazard assessment based on the planarity analysis
discriminates features between stable and unstable domain in the study area
well, especially in the landslide initiation zones. Results also show it is
beneficial to build the landslide hazard inventory mapping, especially where
no information on historical records of landslides exists. By
combining other physical procedures such as geotechnical monitoring, the
landslide hazard assessment using geomorphological features promises a
better understanding of landslides and their mechanisms and provides an
enhanced methodology to evaluate their hazards and appropriate actions. |
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