Debris flows have been observed on some of the dunes in this crater. Some researchers believe that they may be caused by liquid water. Liquid water could be stable for short periods of time in the summer in the southern hemisphere of Mars. These gully-like debris flows may be due to small amounts of ice melting.[2]
East side of Green crater, as seen by CTX camera (on MRO).
Green crater, as seen by CTX camera. Dark dots are dunes.
Dunes in Green crater, as seen by CTX camera. This is an enlargement of the previous image. Thin dark lines are dust devil tracks. The crater on the right is within Green crater. Some old glaciers are visible as arc-shaped ridges. An arrow points to one of the glaciers.
Close-up of gullies in Green crater, as seen by HiRISE.
Dunesedit
Barchan dunes are present in Green crater and visible in pictures below. When there are perfect conditions for producing sand dunes, steady wind in one direction and just enough sand, a barchan sand dune forms. Barchans have a gentle slope on the wind side and a much steeper slope on the lee side where horns or a notch often forms.[3]
^Reiss, D, R. Jaumann. 2003. Recent debris flows on Mars: Seasonal observations of the Russell Crater dune field. Geophysical Research Letters: 30, 1321.
^Pye, Kenneth; Haim Tsoar (2008). Aeolian Sand and Sand Dunes. Springer. pp. 138. ISBN9783540859109.
Wikimedia Commons has media related to Green (Martian crater).
green, martian, crater, this, article, about, martian, crater, crater, moon, green, lunar, crater, green, impact, crater, argyre, quadrangle, mars, named, after, nathan, green, british, astronomer, 1823, 1899, greengullies, green, crater, seen, hirise, planetm. This article is about the Martian crater For the crater on the Moon see Green lunar crater Green is an impact crater in the Argyre quadrangle of Mars It is named after Nathan E Green a British astronomer 1823 1899 1 GreenGullies in Green crater as seen by HiRISE PlanetMarsCoordinates52 42 S 8 24 W 52 7 S 8 4 W 52 7 8 4QuadrangleArgyreDiameter184 kmEponymNathan E Green Contents 1 Description 2 Dunes 3 See also 4 ReferencesDescription editDebris flows have been observed on some of the dunes in this crater Some researchers believe that they may be caused by liquid water Liquid water could be stable for short periods of time in the summer in the southern hemisphere of Mars These gully like debris flows may be due to small amounts of ice melting 2 nbsp East side of Green crater as seen by CTX camera on MRO nbsp Green crater as seen by CTX camera Dark dots are dunes nbsp Dunes in Green crater as seen by CTX camera This is an enlargement of the previous image Thin dark lines are dust devil tracks The crater on the right is within Green crater Some old glaciers are visible as arc shaped ridges An arrow points to one of the glaciers nbsp Close up of gullies in Green crater as seen by HiRISE Dunes editBarchan dunes are present in Green crater and visible in pictures below When there are perfect conditions for producing sand dunes steady wind in one direction and just enough sand a barchan sand dune forms Barchans have a gentle slope on the wind side and a much steeper slope on the lee side where horns or a notch often forms 3 See also editList of craters on Mars Gullies on MarsReferences edit Gazetteer of Planetary Nomenclature Green usgs gov International Astronomical Union Retrieved 4 March 2015 Reiss D R Jaumann 2003 Recent debris flows on Mars Seasonal observations of the Russell Crater dune field Geophysical Research Letters 30 1321 Pye Kenneth Haim Tsoar 2008 Aeolian Sand and Sand Dunes Springer pp 138 ISBN 9783540859109 nbsp Wikimedia Commons has media related to Green Martian crater Portal nbsp Solar System Retrieved from https en wikipedia org w index php title Green Martian crater amp oldid 1199102928, wikipedia, wiki, book, books, library,
