Changeset 6317 for branches/2015/nemo_v3_6_STABLE/DOC/TexFiles/Chapters/Chap_DYN.tex

Timestamp:

2016-02-15T16:21:15+01:00 (8 years ago)

Author:

mathiot

Message:

ISF: update documentation and biblio

File:

• branches/2015/nemo_v3_6_STABLE/DOC/TexFiles/Chapters/Chap_DYN.tex (modified) (2 diffs)

branches/2015/nemo_v3_6_STABLE/DOC/TexFiles/Chapters/Chap_DYN.tex

@@ -637 +637 @@
 ($e_{3w}$).
  
-$\bullet$ Traditional coding with adaptation for ice shelf cavities (\np{ln\_hpg\_isf}=true).
-This scheme need the activation of ice shelf cavities (\np{ln\_isfcav}=true).
-
 $\bullet$ Pressure Jacobian scheme (prj) (a research paper in preparation) (\np{ln\_dynhpg\_prj}=true)
 
@@ -654 +651 @@
 pressure Jacobian method is used to solve the horizontal pressure gradient. This method can provide
 a more accurate calculation of the horizontal pressure gradient than the standard scheme.
+
+\subsection{Ice shelf cavity}
+\label{DYN_hpg_isf}
+Beneath an ice shelf, the total pressure gradient is the sum of the pressure gradient due to the ice shelf load and
+ the pressure gradient due to the ocean load. If cavity opened (\np{ln\_isfcav}~=~true) these 2 terms can be
+ calculated by setting \np{ln\_dynhpg\_isf}~=~true. No other scheme are working with the ice shelf.\\
+
+$\bullet$ The main hypothesis to compute the ice shelf load is that the ice shelf is in an isostatic equilibrium.
+ The top pressure is computed integrating from surface to the base of the ice shelf a reference density profile 
+(prescribed as density of a water at 34.4 PSU and -1.9$\degres C$) and corresponds to the water replaced by the ice shelf. 
+This top pressure is constant over time. A detailed description of this method is described in \citet{Losch2008}.\\
+
+$\bullet$ The ocean load is computed using the expression \eqref{Eq_dynhpg_sco} described in \ref{DYN_hpg_sco}. 
+A treatment of the partial cell for top and bottom similar to the one described in \ref{DYN_hpg_zps} is done 
+to reduce the residual circulation generated by the top partial cell. 
 
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