Fig. 3.

Displacement time Δ dependent diffusion data with ice aging: ice control (open diamonds, t = 25 h; closed diamonds, t = 1922 h), ice with ECP (open circles, t = 92 h; closed circles, t = 1909 h), ice with rIBP(2) (open triangles, t = 189 h; closed triangles, t = 1922 h) and ice with rIBP(4) (open squares, t = 20 h; closed squares, t = 1914 h). Dashed lines are the early time fits of S/V_p while solid lines are the Padé approximation fits. Steeper initial slopes indicate larger S/V_p and smaller asymptotic diffusion coefficients imply more restricted motion, consistent with smaller ice crystals and narrower liquid veins.