Abalos Undae is a dune field on Mars in the periphery of Planum Boreum, the Martian North pole. It is one of the officially named northern circumpolar dune fields, along with Olympia, Hyperboreae, and
Abalos Undae dunes at Abalos Scopuli, the scarp of Abalos Mensa. The ice layers on the cap and basal formations are also visible. The picture was taken by the HiRISE camera on board the Mars Reconnaissance Orbiter and was enhanced by NASA in RGB colour.
Abalos Undae at Abalos Scopuli, the scarp of Abalos Mensa
Dunes in Abalos Undae. The blue areas indicate the presence of dunes of basaltic origin, while the light-colour areas are probably dust.
Gypsum deposits in the dunes of Abalos Undae
Hyperboreae Undae is one of the largest and densest dune fields of Planum Boreum, the Martian north pole. It is named after one of the classical albedo features on Mars. Its name was officially approv
Abalos Undae
…Mars in the periphery of Planum Boreum, the Martian North pole. It is one of the officially named northern circumpolar dune fields, along with Olympia, Hyperboreae, and Siton Undae, and also one of the densest of the region. Its northernmost boundary is located in the southwest channel that separates the Abalos…
Hyperboreae Undae dunes shown with surface frost. The dunes become darker when the frost sublimates from solar heating and the dark sands are revealed.
Coexistence of linear and barchan forms at Hyperboreae Undae. A study has been undertaken to explain the coexistence of these two forms. The location of the initial study site is at the boundary of Hyperboreae Undae with Boreum Cavus.
Hyperboreae Undae barchanoid and linear dunes from NASA's Thermal Emission Imaging System (THEMIS)
Hyperboreae Undae from NASA's Thermal Emission Imaging System (THEMIS)