Wind structure for a belt extending from 60 to 90 au. Top: wind density in a (X, Y) plane at Z = 0 (cut in the midplane). The density was set to 1 cm⁻³ for the wind emerging from the belt. Middle: wind density in a (X, Z) plane at Y = 0 (cut at the middle of the belt). Bottom: velocity structure (direction and magnitude) integrated along the line of sight (assumed here to be along the Y axis). The red hatches show the location of the belt that releases gas.