Details

Autor(en) / Beteiligte

• Cutts, James A.
• Blasius, Karl R.
• Briggs, Geoffrey A.
• Carr, Michael H.
• Greeley, Ronald
• Masursky, Harold

Titel

North Polar Region of Mars: Imaging Results from Viking 2

Ist Teil von

• Science (American Association for the Advancement of Science), 1976-12, Vol.194 (4271), p.1329-1337

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

1976

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• During October 1976, the Viking 2 orbiter acquired approximately 700 high-resolution images of the north polar region of Mars. These images confirm the existence at the north pole of extensive layered deposits largely covered over with deposits of perennial ice. An unconformity within the layered deposits suggests a complex history of climate change during their time of deposition. A pole-girdling accumulation of dunes composed of very dark materials is revealed for the first time by the Viking cameras. The entire region is devoid of fresh impact craters. Rapid rates of erosion or deposition are implied. A scenario for polar geological evolution, involving two types of climate change, is proposed.