Meltwater discharge through the subglacial bed and its land-forming consequences from numerical experiments in the Polish lowland during the last glaciation

Auteur(s) et Affiliation(s)

PIOTROWSKI, J.A.

Dep. of Earth Sciences, Univ., Aarhus, Danemark

HERMANOWSKI, P.

Dep. of Earth Sciences, Univ. of Silesia, Sosnowiec, Pologne

PIECHOTA, A.M.

Dep. of Earth Sciences, Univ. of Silesia, Sosnowiec, Pologne

Description :
This paper attempts to combine numerical experiments on subglacial groundwater flow with field data to elucidate the relationships and interactions between the subglacial hydrology and ice sheet behavior. The AA. try to determine bed areas with strong groundwater drainage potential under the last ice sheet in NW Poland and areas largely inactive hydrologically, and relate these areas to the locations of tunnel valleys. They also apply numerical modelling to estimate subglacial groundwater fluxes and relate them to the empirically estimated basal meltwater production rates to evaluate the likelihood of basal decoupling and regional-scale ice sheet instabilities. Methods used (2D Steady-state Vertical-slice Model, 3D Steady-state Model, 3D Transient Flow Model), results and discussion.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2009, vol. 34, n°. 4, p. 481-492, nombre de pages : 12, Références bibliographiques : 2 p.

Date :
2009

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais