We　present　a　posteriori　error　analysis　for　the　unsteady　Navier-Stokes　equations　with　the　coriolic　force.　Our　analysis　covers　the　Galerkin　finite　element　approximation　in　space　and　the　Euler　full-implicit　scheme　in　time.　This　scheme　is　implicit　for　the　linear　and　nonlinear　terms.　For　the　discretization,　we　propose　and　analyse　two　types　of　error　indica-　tors,　with　one　being　for　the　time　discretization　and　the　other　for　the　space　discretization.　Finally,　we　prove　the　equivalence　between　the　sum　of　the　two　types　of　error　indicators　and　the　full　error,　in　order　to　work　with　adaptive　time　steps　and　finite　element　meshes.　Copyright　©　2011　Watam　Press.