!-----------------------------------------------------------------------
&nam_vvl       !   vertical coordinate options                          (default: z-star)
!-----------------------------------------------------------------------
   ln_vvl_zstar  = .true.           !  z-star vertical coordinate
   ln_vvl_ztilde = .false.          !  z-tilde vertical coordinate: only high frequency variations
   ln_vvl_layer  = .false.          !  full layer vertical coordinate
   ln_vvl_ztilde_as_zstar = .false. !  ztilde vertical coordinate emulating zstar
   ln_vvl_zstar_at_eqtor  = .false. !  ztilde near the equator
   rn_ahe3       =  0.0             !  thickness diffusion coefficient
   rn_rst_e3t    = 30.0             !  ztilde to zstar restoration timescale [days]
   rn_lf_cutoff  =  5.0             !  cutoff frequency for low-pass filter  [days]
   rn_zdef_max   =  0.9             !  maximum fractional e3t deformation
   ln_vvl_dbg    = .false.          !  debug prints    (T/F)
   nn_vvl_interp =  2               !  interpolation method of scale factor anomalies at U/V/F points
                                    !  =0 linear even at the bottom (old)
                                    !  =1 linear with bottom correction
                                    !  =2 proportionnal to scale factors at rest ("qco" like)
/