compute_driving_stress define_model_state_impl diagnostics_impl driving_stress extrapolate_velocity init_impl m_da m_event_ssa m_mask m_stdout_ssa m_taud m_velocity_global set_initial_guess solve SSA stdout_report strength_extension update write_model_state_impl ~SSA

compute_driving_stress() void pism::stressbalance::SSA::compute_driving_stress ( const array::Scalar &  ice_thickness, const array::Scalar1 &  surface_elevation, const array::CellType1 &  cell_type, const array::Scalar1 *  no_model_mask, array::Vector &  result  ) const protectedvirtual Compute the gravitational driving stress. Computes the gravitational driving stress at the base of the ice: \[ \tau_d = - \rho g H \nabla h \] Reimplemented in pism::stressbalance::SSAFD_Regional. Definition at line 232 of file SSA.cc. References pism::array::Array2D< T >::add(), pism::stencils::Star< T >::c, pism::array::diff_x_p(), pism::array::diff_y_p(), pism::stencils::Star< T >::e, pism::mask::floating_ice(), pism::mask::ice_free_ocean(), pism::Component::m_config, pism::stressbalance::ShallowStressBalance::m_EC, pism::Component::m_grid, pism::stencils::Star< T >::n, pism::stencils::Star< T >::s, pism::array::Array2D< T >::star(), pism::array::Scalar1::star_int(), pism::stencils::Star< T >::w, and pism::stressbalance::weight(). Referenced by pism::stressbalance::SSAFD::assemble_rhs(), and pism::stressbalance::SSAFD_Regional::compute_driving_stress().