Left panels: 2D gas surface density after 1000 orbits of the inner planet, when two planets with r_P2/r_P1 = 3.5 are interacting with the disk, with a planet-to-stellar mass ratio of q_P1 = 4 × 10^-4 for the inner planet and q_P2 = 2 × 10^-3 (left), q_P2 = 4 × 10^-3 (middle), and q_P2 = 6 × 10^-3 (right), and two different values of disk viscosity α_turb = 10^-2 (top) and α_turb = 10^-3 (bottom). Right panels: azimuthally averaged gas surface density from the corresponding hydrodynamical simulations and time-averaged over 200 orbits (from 1000 to 1200 orbits).