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| Titel |
Characteristics and rainfall threshold of deep-seated landslide in Taiwan |
| VerfasserIn |
Lun-Wei Wei, Hongey Chen |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250125899
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| Publikation (Nr.) |
 EGU/EGU2016-5552.pdf |
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| Zusammenfassung |
| Deep-seated landslide (also called catastrophic landslide or large scale landslide) is one of the
most serious nature disasters in the world. This kind of landslide is always induced by heavy
rainfall (e.g. typhoon Morakot) or strong earthquake (e.g. Chi-Chi earthquake) in Taiwan.
Due to the fact that it might cause tremendous property damage and casualties, the
characteristics of deep-seated landslide should be discussed in more detail. In this study, 51
rainfall-induced deep-seated landslide cases were used to analyze the geological and
geomorphological features like lithology, angle between dip direction and aspect, distance to
fault/fold, daylight or not, angle of slope and so on. Besides, by analyzing 51 deep-seated
landslides and 949 shallow landslides, this research found that the rainfall threshold for
deep-seated landslide was much higher than that for shallow landslides, with best-fit
lines (i.e. 50% threshold) were I=164.45D−0.577 and I=33.295D−0.268 separately.
These results were essential for establishing the relationship between rainfall and
geological/geomorphological features of rainfall-induced deep-seated landslide. |
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