| Risultati della ricerca nelle immagini - "Sisyphi" |
Dunefield-Sisyphi_Cavi-PIA14517-PCF-LXTT.jpgDunefield in Sisyphi Cavi (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)186 visiteCaption NASA:"The Dunefield visible in this VIS image is located in the Southern Martian Depressions known as Sisyphi Cavi".
Orbit Number: 42506
Latitude: 70,73° South
Longitude: 359,85° East
Instrument: VIS
Captured: July, 15th, 2011
Marl Local Time: 05:00 (Early Morning Hours)
MareKromium
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Dunefield-Sisyphi_Planum-PIA14986-PCF-LXTT.jpgDark Dunefield in Sisyphi Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)199 visiteOrbit Number: 43168
Latitude: 5,712° South
Longitude: 351,805° East
Instrument: VIS
Captured: September, 7th, 2011
Mars Local Time (M.L.T.): 17:10 (Middle Afternoon)
MareKromium
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Dunes-Dunefield-Sisyphi_Planum-PIA14384-PCF-LXTT.jpgLarge Dunefield in Sisyphi Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)112 visitenessun commentoMareKromium
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PSP_004804_1105_RED_abrowse.jpgGullies in Sisyphi Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)69 visiteImage PSP_004804_1105 shows the Walls of a large Pit inside Lyell Crater, near the South Polar Region.
This image was acquired during a period of elevated Atmospheric Dust, following a series of Dust Storms that encircled the Planet; this is the cause of the longitudinal bands of contrasting gray levels in the image. We can still see through the thick Atmosphere, though, Gullies and other subtle features which could have been produced by water and ice present at or near the Surface.
The otherwise subdued Surface in this Region is criss-crossed by numerous fissures, forming Polygons some 10 mt (9 yards) across. Similar features in both shape and scale can be found in terrestrial Periglacial Regions such as Antarctica, where ice is present at or near the Surface. Antarctica's features are the product of repeated expansion and contraction of the soil-ice mixture due to seasonal temperature oscillations. This results in Polygonal Networks of Stress Fractures. MareKromium
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PSP_005160_1150_RED_abrowse-PCF-LXTT-00.jpgGullies in Mantle Terrain in Sisyphi Planum (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 214 visiteCaption NASA:"This observation shows the East-facing Walls of an Unnamed Crater in Sisyphi Planum, near the South Polar Regions. Gullies, as well as Mantle Terrain and Polygons are also visible; these features suggest that at some point in time, liquid and ice may have been present at and near the Surface. The Gullies, which are rather eroded, have ample Alcoves and subdued Channels; dark patches and Ripples in the bottom of the Channels indicate that the most recent activity was Aeolian (such as "wind-driven") in Nature. Mantle Terrains are characterized by their smooth Surface and light, uniform color. They are widely interpreted as Terrains blanketed by a mixture of Ice and Dust, deposited under climatic conditions different from that of today. The Gullies in this image have Alcove Areas that seem to have cut through the Mantle Terrain, exposing the underlying materials". MareKromium
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PSP_005160_1150_RED_abrowse-PCF-LXTT-01.jpgGullies in Mantle Terrain in Sisyphi Planum (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 223 visiteCaption NASA:"This EDM shows the Boundary between one of the Alcoves and the surrounding Mantled Terrain. Numerous Fissures arranged forming Polygons some 3 to 10 meters (3,3 to 11 yards) across are visible in the image. These are similar to features found in Terrestrial Periglacial Regions such as Antarctica, where ice is present at or near the Surface. Antarctica's Polygons form by repeated expansion and contraction of the soil-ice mixture due to seasonal temperature oscillations; this results in Polygonal Networks of Stress Fractures".MareKromium
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Sisyphi_Planum-PIA14513-PCF-LXTT.jpgFeatures of Sisyphi Planum (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)178 visitenessun commentoMareKromium
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Sysiphi_Planum-MGS-PCF-LXTT-02.JPGSysiphi Planum (Original NASA-MSSS RAW b/w Frame)55 visiteCaption NASA originale:"This MGS-MOC image shows a spine of material exposed in the Sisyphi Planum Region of Mars.
Gullies can be seen on the deeply-shadowed ridge slope.
Mass movement (landsliding - maybe?) has contributed to the erosion of this ridge and the creation of the apron of talus that surrounds it".
Location near: 70,7° South; 357,0° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Summer
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