(a) The profiles of the electron magnetic moment summed over the local region P ⊥ / B along the separatrix in the first quadrant at Ω i 0 t = 26.5 . (b) The parallel electron flow velocity V ∥ along the separatrix in the first quadrant at Ω i 0 t = 26.5 . (c) The integration of parallel electric field force − ∫ l 0 l eE ∥ d l (green solid line), magnetic mirror force − ∫ l 0 l P ⊥ ∇ ∥ B / ( n e B ) d l (red solid line), the sum − ∫ l 0 l eE ∥ + P ⊥ ∇ ∥ B / ( n e B ) d l (black dashed line), and the electron convective derivation ∫ l 0 l m e ( V · ∇ ) V ∥ d l (black solid line) along the separatrix in the first quadrant at Ω i 0 t = 26.5 . In the figure, the distance L_s is measured from the X line along the upper-right separatrix.