- Timestamp:
- 2016-03-18T14:56:37+01:00 (8 years ago)
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
branches/2015/nemo_v3_6_STABLE/DOC/TexFiles/Chapters/Chap_DYN.tex
r6317 r6396 655 655 \label{DYN_hpg_isf} 656 656 Beneath an ice shelf, the total pressure gradient is the sum of the pressure gradient due to the ice shelf load and 657 the pressure gradient due to the ocean load. If cavity opened (\np{ln\_isfcav}~=~true) these 2 terms can be 658 calculated by setting \np{ln\_dynhpg\_isf}~=~true. No other scheme are working with the ice shelf.\\ 659 660 $\bullet$ The main hypothesis to compute the ice shelf load is that the ice shelf is in an isostatic equilibrium. 661 The top pressure is computed integrating from surface to the base of the ice shelf a reference density profile 662 (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. 663 This top pressure is constant over time. A detailed description of this method is described in \citet{Losch2008}.\\ 657 the pressure gradient due to the ocean load. If cavities are present (\np{ln\_isfcav}~=~true) these two terms can be 658 calculated by setting \np{ln\_dynhpg\_isf}~=~true. No other scheme is working with ice shelves.\\ 659 660 $\bullet$ The main hypothesis to compute the ice shelf load is that the ice shelf is in isostatic equilibrium. 661 The top pressure is computed integrating a reference density profile (prescribed as density of a water at 34.4 662 PSU and -1.9$\degres C$) from the sea surface to the ice shelf base, which corresponds to the load of the water 663 column in which the ice shelf is floatting. This top pressure is constant over time. A detailed description of 664 this method is described in \citet{Losch2008}.\\ 664 665 665 666 $\bullet$ The ocean load is computed using the expression \eqref{Eq_dynhpg_sco} described in \ref{DYN_hpg_sco}. 666 A treatment of the partial cell for top and bottomsimilar to the one described in \ref{DYN_hpg_zps} is done667 A treatment of the top and bottom partial cells similar to the one described in \ref{DYN_hpg_zps} is done 667 668 to reduce the residual circulation generated by the top partial cell. 668 669
Note: See TracChangeset
for help on using the changeset viewer.