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(Article of periodic en Anglais - 2012)

Document title

Hyper-dry conditions provide new insights into the cause of extreme floods after wildfire

Authors(s) and Affiliation(s)

MOODY J.A. (1) ; EBEL B.A. (1) ;
(1) U.S. Geological Survey, Boulder, ETATS-UNIS

Abstract

A catastrophic wildfire in the foothills of the Rocky Mountains near Boulder, Colorado provided a unique opportunity to investigate soil conditions immediately after a wildfire and before alteration by rainfall. Measurements of near-surface (< 6 cm) soil properties, rainfall, and wind velocity were started 8 days after the wildfire began. These measurements established that hyper-dry conditions existed and provided an in-situ retention curve for these conditions. These conditions exacerbate the effects of water repellency (natural and fire-induced) and limit the effectiveness of capillarity and gravity driven infiltration into fire-affected soils. This existence of hyper-dry conditions provides insight into why, frequently during the first rain storm after a wildfire, nearly all rainfall becomes runoff causing extreme floods and debris flows

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 93 [pp. 58-63]

Bibliographic references : 32 ref.

Collation : 2 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.01.006

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
Refdoc record number (ud4) : 26391128 : Permanent link - XML version
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