Citation

Carrasco RM, Pedraza J, Martin-Duque JF, Mattera M, Sanz MA, Bodoque JM. Nat. Hazards 2003; 30(3): 361-381.

Copyright

(Copyright © 2003, Holtzbrinck Springer Nature Publishing Group)

DOI

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PMID

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Abstract

The Jerte Valley is a northeast- southwest tending graben located in the mountainous region of west central Spain ( Spanish Central System). Mass movements have been a predominant shaping process on the Valley slopes during the Quaternary. Present day activity is characterized as either ' first- time failure' ( shallow debris slides and debris flows) or ' reactivations' of pre- existing landslides deposits. A delineation of landslide hazard zoning within the Valley has been carried out by using the detailed documentation of a particular event ( a debris slide and a sequel torrential flood, which occurred on the Jubaguerra stream gorge), and GIS techniques. The procedure has had four stages, which are: ( 1) the elaboration of a susceptibility map ( spatial prediction) of landslides; ( 2) the elaboration of a map of ' restricted susceptibility' in the particular case of slopes that are connected to streams and torrents ( gorges); ( 3) the elaboration of a digital model which relates the altitude to the occurrence probability of those particular precipitation conditions which characterized the Jubaguerra event and ( 4) the combination of the probability model with the ' restricted susceptibility map', to establish 'critical zones' or areas which are more prone to the occurrence of phenomena that have same typology as this one.

Language: en