Fig. 4From: Reconsideration of the energy balance in earthquake faultingGeometry and notation of a traction vector \({\mathbf{T}}\) on a fault \(\Sigma\). \({\mathbf{n}}^{ - }\) is the unit normal vector to the backside \(\Sigma^{ - }\) of the fault, and \({\varvec{\nu}}\) represents the unit slip-direction vectorBack to article page