WebMay 24, 2024 · The Nili and Meroe linear dunes elongate from the lee of local mesas or regional scarps. At Nili Patera, the linear dunes sometimes merge with barchan or barchanoid dunes (Figure 4a), whereas at Meroe Patera, barchans are ejected at the distal end of the linear dunes, or the dunes segment to form new bedforms (Figure 4b). At … http://redplanet.asu.edu/?p=1705
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Such movement mechanism is called saltation and it has been determined that the dunes at Nili Patera, under the existing wind conditions, are active and moving as a unit. Due to the thinner atmosphere of Mars, winds have to be approximately 10 times faster than those on Earth to cause sand movement. See more Nili Patera is a dune field on Mars. It is located on top of a lava bed, at the site of an ancient volcano, the Nili Patera caldera of Syrtis Major, near the Martian equator, and it is one of the most active dune fields of Mars. Its location … See more Over a period of 35 years, starting with Mariner 9 and ending with Mars Odyssey, there had been no detection of sand movement on … See more • Classical albedo features on Mars • Abalos Undae • Hagal dune field • Olympia Undae • Hyperboreae Undae See more • Dark sand dunes on Nili Patera of probable volcanic origin. The lighter-coloured surface is ancient lava, which has cooled. The cracks on the lava floor are filled with dark, volcanic sand. • Dunes in Nili Patera, showing wind-created ripples and an … See more WebJul 17, 2013 · Advancing dune in Nili Patera, Mars Back-and-forth blinking of this two-image animation shows movement of a sand dune on Mars. The before-and-after images were taken nearly three Earth years apart by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. The scale bar is 50 meters … photo paper reviews inkjet