HiRISE / MRO : ESP_069261_2620 "Seasonal Changes of Polar Megadunes"

This image covers a unique polar dune field during northern spring, revealing some interesting patterns.

 

The main “megadune” formation comprises giant crescent-shaped dunes called “barchans,” which have been migrating (from upper-right to lower-left) over the past several centuries or more.

 

Acquisition date

06 May 2021

 

Local Mars time

14:02

 

Latitude (centered)

82.042°

 

Longitude (East)

312.660°

 

Spacecraft altitude

317.3 km (197.2 miles)

 

Original image scale range

31.8 cm/pixel (with 1 x 1 binning) so objects ~95 cm across are resolved

 

Map projected scale

25 cm/pixel

 

Source: www.uahirise.org/ESP_069261_2620

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