Equilibrium sediment flux
= Equilibrium sediment flux
{title2=$q_{\mathrm{sat}}$}
= Saturated sediment flux
{synonym}
= Saturated sand flux
{synonym}
The <equilibrium sediment flux> is the transport supported locally by a prescribed bed <shear stress>. A common idealization is $q_{\mathrm{sat}}=\phi_b\chi(\tau-\tau_{\mathrm{th}})_+^\gamma$. Linearization above the <sediment entrainment threshold> requires perturbations small compared with the positive excess stress.