Evolution of the glacial landscape of the Southern Alps of New Zealand: Insights from a glacial erosion model

Details

Ressource 1Request a copy Sous embargo indéterminé.
State: Public
Version: author
Serval ID
serval:BIB_398CD2272FA1
Type
Article: article from journal or magazin.
Collection
Publications
Title
Evolution of the glacial landscape of the Southern Alps of New Zealand: Insights from a glacial erosion model
Journal
Journal of Geophysical Research - Earth Surface
Author(s)
Herman F., Braun J.
ISSN-L
0148-0227
Publication state
Published
Issued date
2008
Peer-reviewed
Oui
Volume
113
Pages
F02009
Language
english
Abstract
A new version of a landscape evolution model that includes the evolution
of an ice cap at a 10(3) to 10(5) year timescale and its associated
erosion patterns is presented and applied to the Southern Alps of New
Zealand. Modeling of the ice cap evolution is performed on a
higher-resolution grid (i.e., similar to 100 m) than previously (Braun
et al., 1998). It predicts which parts of the landscape are, and have
been, affected by glacial erosion. The model results highlight the
complexity of the erosion patterns induced by ice caps and glaciers.
Glacial erosion in a tectonically active area is, as suggested by the
model, not uniform across the mountain range. Furthermore, high rock
uplift rates, heavy precipitation, and climatic oscillations constantly
interact. The feedback mechanisms are such that they render the landform
very dynamic and transient. However, under conditions of reduced rock
uplift rate and precipitation, the landform becomes more stable at the
timescale of the glacial cycle. Finally, the modeling results favor a
tectonic model in the Southern Alps in which the maximum rock uplift is
offset from the Alpine Fault.
Open Access
Yes
Create date
07/10/2012 20:46
Last modification date
20/08/2019 14:29
Usage data