Real-Time Imaging Reveals Distinct Pore-Scale Dynamics During Transient and Equilibrium Subsurface Multiphase Flow - Spurin,C; Bultreys,T; Rucker,M; Garfi,G; Schleputz,CM; Novak,V; Berg,S; Blunt,MJ; Krevor,S (WATER RESOURCES RESEARCH, 2020)