commit 2bee976048c901d8badd3a7fb45cd9836d7225f4
parent 042c8f0aeaf76746a6f589808c1dc77907e2c45d
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date: Thu, 14 Nov 2019 16:04:54 +0100
Fix first part of discussion
Diffstat:
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/continuum-granular-manuscript1.tex b/continuum-granular-manuscript1.tex
@@ -474,8 +474,8 @@ Regardless of perturbation shape, the maximum deformation depth increases with i
\section{Discussion}%
\label{sec:discussion}
In this study it is assumed that there is a strong coupling between ice and bed.
-However, overpressurization and slip at the ice-bed interface may cause episodic decoupling at the interface and reduce bed deformation, as observed under Whillans Ice Stream, West Antarctica \citep[e.g.,][]{Emgelhardt1998}, and in deposits from Pleistocene glaciations \citep[e.g.,][]{Piotrowski2001}.
-We see the presented framework as an important improvement of treating sediment advection in ice-flow models, but acknowledge that a complete understanding of the sediment mass budget requires improved models of sliding over sedimentary beds.
+However, overpressurization and slip at the ice-bed interface may cause episodic decoupling at the interface and reduce bed deformation, as observed under Whillans Ice Stream, West Antarctica \citep[e.g.,][]{Engelhardt1998}, and in deposits from Pleistocene glaciations \citep[e.g.,][]{Piotrowski2001}.
+We see the presented framework as a significant improvement of treating sediment advection in ice-flow models, but acknowledge that a complete understanding of the sediment mass budget requires improved models of ice-bed interface physics.
The stress-dependent sediment advection without variations in the pore pressure observed in Fig.~\ref{fig:strain_distribution} is relevant for instability theories of subglacial landform development \citep{Hindmarsh1999, Fowler2000, Schoof2007, Fowler2018}.
From geometrical considerations, it is likely that bed-normal stresses on the stoss side of subglacial topography are higher than on the lee side.
