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(Article of periodic en Anglais - 2012)

Document title

Phoenix debris-flow hazard assessment : house location matters

Authors(s) and Affiliation(s)

MOORE M. (1) ; KRAETZ G. (1) ; DORN R.I. (1) ;
(1) School of Geographical Sciences and Urban Planning, Arizona State Univ., Tempe, ETATS-UNIS

Abstract

This paper presents an initial study testing the hypothesis that debris-flow volume and run-out lengths in the Ma Ha Tuak Range have declined substantially since the end of the last ice age. The AA. used a mix of field and geospatial methods to estimate volume, and the varnish microlamination technique to estimate minimum ages of debris deposits. Estimates of debris-flow volumes show a drop of more than 2 orders of magnitude from latest Pleistocene to 20th century or Little Ice Age. In contrast, a catchment above houses in the Gila Range, South Mountain, where houses were built very close to the debris-flow source area, reveals an increase in debris-flow magnitude over time. These contrasting findings emphasize the importance of the location of home sites with respect to the debris-flow system in the type of small desert mountain catchments that interface with the sprawling urbanism found in Southwestern USA deserts

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2012, vol. 33, no6 [pp. 491-513]

Bibliographic references : 31 ref.

Collation : 16 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.2747/0272-3646.33.6.491

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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