Map of valley networks in the northwestern Hellas region, Mars

This dataset provides a representation of the valley networks in the northwestern Hellas region. We mapped the valley networks as vector-based polylines within ArcGIS software, using the ~5 m/pixel CTX mosaics with THEMIS daytime IR mosaics as the regional background. Additionally, we used the 200 m/pixel MOLA-HRSC blended DEM for detailed identification, mapping, and derivation of topographic and morphologic parameters of valley networks. The dataset includes the whole valley networks within the study region, the mainstreams of the valley networks, single valleys, and extracted junction angles. Attribute tables are associated with the dataset, providing useful information and morphologic parameters of the valley networks such as length, sinuosity, stream order for each valley networks.