manus_continuum_granular1

manuscript files for first continuum-till paper
git clone git://src.adamsgaard.dk/manus_continuum_granular1
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commit db692c9ac14855b85ea5bce55fd7f0a62aa686fe
parent 2f01a826e703dc0251dca1eddce1d3aeac8580cb
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date:   Wed, 26 Jun 2019 15:30:29 +0200

Move skin depth to discussion

Diffstat:
Mcontinuum-granular-manuscript1.tex | 22+++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/continuum-granular-manuscript1.tex b/continuum-granular-manuscript1.tex @@ -147,16 +147,6 @@ The method is unconditionally stable and second-order accurate in time and space \section{Results}% \label{sec:results} -The water pressure variations vary with the same periodocity as the forcing, but with exponential decay in amplitude and increasing lag at depth. -The skin depth is defined as the distance where the fluctuation amplitude decreases to $1/e$ of its surface value. -As long as fluid and diffusion properties are constant, - an analytical solution to skin depth in our system follows the form \citep[after Eq. 4.90 in][]{Turcotte2002}, -\begin{equation} - d_\text{s} = \left( \frac{k}{\phi\mu_\text{f}\beta_\text{f}\pi f} \right)^{1/2} - \label{eq:skin_depth} -\end{equation} -The above relation implies that the amplitude in water-pressure forcing does not influence the maximum depth of slip. - \begin{figure}[htbp] \begin{center} \includegraphics[width=7.5cm]{experiments/fig1.pdf} @@ -202,7 +192,7 @@ The above relation implies that the amplitude in water-pressure forcing does not \begin{center} \includegraphics[width=7.5cm]{experiments/fig5.pdf} \caption{\label{fig:skin_depth}% - Skin depth of pore-pressure fluctuations (Eq.~\ref{eq:skin_depth}) with forcing frequencies ranging from yearly to hourly. + Skin depth of pore-pressure fluctuations (Eq.~\ref{eq:skin_depth}) with forcing frequencies ranging from yearly to hourly periods. The permeability range spans commonly encountered tills \citep{Schwartz2003}. } \end{center} @@ -212,6 +202,16 @@ The above relation implies that the amplitude in water-pressure forcing does not \label{sec:discussion} % Our model has a representative grain diameter, but tills are polydisperse +The water pressure variations vary with the same periodocity as the forcing, but with exponential decay in amplitude and increasing lag at depth. +The skin depth is defined as the distance where the fluctuation amplitude decreases to $1/e$ of its surface value. +As long as fluid and diffusion properties are constant, + an analytical solution to skin depth in our system follows the form \citep[after Eq. 4.90 in][]{Turcotte2002}, +\begin{equation} + d_\text{s} = \left( \frac{k}{\phi\mu_\text{f}\beta_\text{f}\pi f} \right)^{1/2} + \label{eq:skin_depth} +\end{equation} +The above relation implies that the amplitude in water-pressure forcing does not influence the maximum depth of slip. + \section{Conclusion}% \label{sec:conclusion}