Exploring the Regional Structure of the Worldwide Air Traffic and Route Networks

Figure 3

Small local components in the weighted (a) and unweighted (b) world air transportation network. The red circles are the components disappearing in the weighted network. The blue circles are similar small components in both networks. The green circles are the components that do not appear in the unweighted network. The orange circles are the components splitting in the weighted network. Geographical areas outside the figure do not contain small components.

(a)

(b)