Searching for useful non-systematic tree-ring data sources for flood hazard analysis using GIS tools

Auteur(s) et Affiliation(s)

BALLESTEROS-CÁNOVAS, J.A.

Dep. of Research and Geoscientific Prospective, Geological Survey of Spain (IGME), Madrid, Espagne

DÍEZ-HERRERO, A.

Dep. of Research and Geoscientific Prospective, Geological Survey of Spain (IGME), Madrid, Espagne

BODOQUE, J.M.

Mining and Geological Engineering Dep., Univ. Castilla-La Mancha, Toledo, Espagne

Description :
This paper presents a novel methodology for selecting preliminary suitable watersheds for dendrogeomorphological palaeoflood research in central Spain (provinces of Segovia, Avila, Madrid, Guadalajara and Cuenca). Using GIS tools and basic thematic maps, the AA. defined 3 different indexes concerning the occurrence of dendrogeomorphological evidence. A Consensus Decision Making procedure (CDM) was carried out in order to weight each factor individually prior to combining the factors. As a result, the AA. obtained information about the most appropriate watersheds for palaeoflood research using tree-ring analysis. A total of 189 watersheds appeared to be highly interesting for tree-ring studies. Of these only 17 have flow gauges, so data concerning frequency and magnitude of floods in basins without gauges could potentially be provided by dendrogeomorphological studies.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 92, p. 130-138, nombre de pages : 9, Références bibliographiques : 1 p.

Date :
2012

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

Langue :
Anglais