c enthalpy enthalpy_cold enthalpy_cts enthalpy_liquid enthalpy_permissive EnthalpyConverter is_temperate is_temperate_relaxed L m_beta m_c_i m_c_w m_cold_mode m_g m_L m_p_air m_rho_i m_T_0 m_T_melting m_T_tolerance melting_temperature pressure pressure pressure_adjusted_temperature Ptr temperature temperature_cold validate_E_P validate_T_omega_P water_fraction ~EnthalpyConverter

pressure() [2/2] double pism::EnthalpyConverter::pressure ( double  depth ) const Get pressure in ice from depth below surface using the hydrostatic assumption. If $d$ is the depth then $$p = p_{\text{air}} + \rho_i g d.$$ Frequently $d$ is computed from the thickess minus a level in the ice, something like ice_thickness(i, j) - z[k]. The input depth to this routine is allowed to be negative, representing a position above the surface of the ice. Definition at line 133 of file EnthalpyConverter.cc. References m_g, m_p_air, and m_rho_i. Referenced by pism::stressbalance::SSAFDBase::compute_driving_stress(), and pism::enthalpy_from_temperature_cold().