Frequency and spatial distribution of landslides in a mountainous drainage basin : Western Foothills, Taiwan

Auteurs :
CHANG, J.-C.
SLAYMAKER, O.

Description :
Maps from 1904 and 1915 and air photographs from 1963, 1980, 1985, 1993 and 1996 provide a record of landslide incidence in a 92.1-km2 drainage basin, a headwater tributary of the Cho-shui River in Taiwan. Interpretation of landslide patterns from the early maps indicate that in 4 sub-basins structural geological factors control chronic landsliding regularly reactivated by intense rains. Within these 4 sub-basins, all later air photographs reveal a continuing high incidence of landslides. Logging activity, major road construction, and extreme typhoon and earthquake events produce short-term acceleration of landslide incidence.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2002, vol. 46, n°. 4, p. 285-307, Collation : Illustration, Références bibliographiques : 13 ref.

Date :
2002

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena