Arctic sea ice, after more than three decades of prolonged thinning and shrinking, has transformed radically with a large increase of first-year ice and an almost total disappearance of older (more than 5 years) multiyear ice [Stroeve et al., 2012]. With this evolution comes the necessity to reevaluate the physical processes involving sea ice and, in particular, the driving mechanisms that set the ice in motion and redistribute its mass into and out of the Arctic basin. Usually three forces dominate in the momentum balance of sea ice: the atmospheric drag, the oceanic drag and the internal forces in the ice. While understanding the mechanical properties and rheology of sea ice remains an active domain of research [Feltham, 2008; Coon et al., 2007; Tsamados et al., 2013] the aim of this paper is to address the fluxes of momentum (also called drag) between the air and the ice and between the ocean and the ice.