Yardangs on Mars

Numéro d’image : 12000501
Yardangs on Mars
This image shows a part of a central mound in an impact crater in Arabia Terra. At low resolution,the mound is relatively smooth and featureless,although elsewhere in the mound a Mars Orbiter Camera (MOC) image shows fine layers. The mound is broad,filling much of the crater,although it now appears to be eroding. Images like this can be used to explore the nature of the deposit,and provide clues about how it formed. At high resolution the material still appears relatively uniform and featureless,without boulders or obvious fine layers. This indicates a relatively weak,fine-grained material. The large,elongated features in the image are yardangs. These are characteristic of aeolian (wind) erosion. They form roughly parallel with the direction of the prevailing wind,and the streamlined shape (often compared with the hull of a boat) is created by persistent flow from this direction. Yardangs on Earth often form from relatively unconsolidated material,supporting the inference made from the appearance of the deposit
Licence : Droits gérés
Crédit: Science Photo Library / NASA
Taille de l’image : 1550 px × 2951 px
Model Release : Non requis
Property Release : Non requis
Restrictions :
  • ALL except GBR IRL CAN HKG ZAF USA IND TWN CHN DEU

Prix pour cette image À partir de 45 €

Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €

Mots clés

;