IGB

Connexion

(Article of periodic en Anglais - 2013)

Document title

Measurement and modeling of moisture content above an oscillating water table : implications for beach surface moisture dynamics

Authors(s) and Affiliation(s)

SCHMUTZ P.P. (1) ; NAMIKAS S.L. (1) ;
(1) Dept. of Geography and Anthropology, Louisiana State Univ., Baton Rouge, ETATS-UNIS

Abstract

This study examined the influence of tidally-induced oscillations of the beach water table in regulating beach surface moisture dynamics. Laboratory experiments were conducted to assess the influence of hysteresis and transient flow effects on surface moisture variability. Results indicate that surface moisture content behaves in a distinctly hysteretic manner. Examination of water flow scanning curves illustrated that for all surface elevations considered, higher moisture contents for a given pressure head occurred during the drying cycle than during the wetting cycle. This observation is particularly evident with shallow surface elevations (i.e. water table close to the surface) where the Haines Jump phenomenon was found to have a significant influence on moisture content dynamics. Additionally, an assessment of the accuracy of hysteretic and non-hysteretic models to predict the measured moisture contents demonstrated that hysteretic simulations consistently provide a better representation of the observed moisture contents than non-hysteretic simulations

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no11 [pp. 1317-1325]

Bibliographic references : 1 p.

Collation : 10 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3418

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28337812 : Permanent link - XML version
Powered by Pxxo