| Ultimi arrivi - A Tribute To Mars Global Surveyor |
Clouds-Hellas_Planitia-MGS.JPGHeavy Dusty Clouds obscuring Hellas Planitia (Original NASA/MGS/MSSS b/w Frame)57 visiteCaption NASA originale:"This MGS-MOC image shows billowing clouds of dust rising from a storm South-East of Hellas Planitia.
The dust storm in this case obscured the Mars Orbiter Camera's view of the Martian Surface".
Location near: 62,2° South; 259,0° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern AutumnMag 24, 2006
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Volcanic_Features-Collapse_Pit_Chain-Tharsis_Tolus-MGS.JPGCollapse Pit-Chain near Tharsis Tholus (Original NASA/MGS/MSSS b/w Frame)68 visiteCaption NASA originale:"This MGS-MOC mage shows a portion of a Chain of Collapse Pits on a Lava and Dust-covered Plain, North/West of Tharsis Tholus —one of the many volcanic constructs in the Tharsis Region of Mars.
Pit chains, such as this one, are associated with the collapse of surface materials into subsurface voids formed by faulting and expansion — or extension — of the bedrock".
Location near: 16,4° North Lat. and 92,6° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterMag 17, 2006
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South_Polar_Features-Residual_Cap.JPGSouth Polar "Shoreline" (Original NASA/MGS/MSSS b/w Frame)64 visiteCaption NASA originale:"This MGS-MOC image shows the very edge of the South Polar Residual Cap of Mars. The bright areas, which appear somewhat like pieces of sliced "Swiss cheese", are composed mainly of frozen Carbon Dioxide. The Scarps around the edges of the Carbon Dioxide mesas have been retreating at a rate of roughly 3 mt (~3 yards) per Martian Year; in this case, exposing a darker surface that lies below".
Location near: 85,4° South; 88,6° West
Image width: ~3 km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerMag 15, 2006
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Channels-Evros_Vallis-MGS.JPGEvros Vallis (Original NASA/MGS/MSSS b/w Frame)59 visiteCaption NASA originale:"This MGS-MOC image shows a small portion of Evros Vallis, an ancient Channel located South of the large Impact Basin, Schiaparelli. In this image, the Walls and Floor of the Valley, as well as the adjacent upland, are all mantled by Dust. In addition to the Dust Mantle, large, windblown Ripples occur in low-lying areas, particularly on the Valley Floor. The Ripples, also, have been covered by Dust".
Location near: 12,7° South Lat. and 346,7° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern AutumnMag 13, 2006
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South_Polar_Features-Swiss_Cheese_Terrain-04.jpgThe "drawings" of the South Polar Residual Cap (2)60 visitenessun commentoMag 10, 2006
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South_Polar_Features-Swiss_Cheese_Terrain-03.jpgThe "drawings" of the South Polar Residual Cap (1)57 visiteCaption NASA originale:"This MGS-MOC image shows a Summertime view of the South Polar Residual Cap of Mars. In this image, mesas composed largely of solid Carbon Dioxide are separated from one another by irregularly-shaped depressions. The variation in brightness across this scene is a function of several factors including, but not limited to, varying proportions of dust and solid Carbon Dioxide, undulating topography, and differences in the roughness of the slopes versus the flat surfaces".
Location near: 86,7° South; 343,3° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerMag 10, 2006
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North_Polar_Features-Frosted_Dunes-Plumage-MGS.JPGNorth Polar "Frosted Dunes" (Original NASA/MGS/MSSS b/w Frame)60 visiteCaption NASA originale:"This MGS-MOC image shows Dunes in the North Polar Region of Mars. The Dunes in this scene are covered by a layer of Carbon Dioxide Frost that accumulated during the Winter in 2005. Dark spots indicate areas where Frost has begun to sublime away. In Summer, the Dunefield will be dark, as all of the Frost will be gone and the Iron- and Magnesium-bearing Silicate Sands will be exposed".
Location near: 81,9° North Lat. and 226,1° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMag 08, 2006
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Volcanic_Regions-Rocky_Outcrops-MGS-00.JPGStreamlined Rocky Outcrops near Olympus Mons (Original NASA/MGS/MSSS b/w Frame)60 visiteCaption NASA originale:"This MGS-MOC image shows wind-eroded Outcrops overlying Lava Flow Surfaces located to the West of Olympus Mons. Outcrops with this appearance are also called Yardangs. Yardangs typically form in Sedimentary Rock or Volcanic Ash that contains some amount of Sand. The weathering of the Rock due to the Aeolian action cause the release of sand-sized particles from the Outcrops and, in time, such a form of erosion slowly shape the rock into the classic, inverted boat hull-like shapes of Yardangs".
Location near: 13,2° North Lat. and 160,1° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMag 07, 2006
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Craters-Unnamed_Crater_in_Chrise_Planitia-MGS.JPGCrater with bright Windstreak in Chrise Planitia (Original NASA/MGS/MSSS b/w Frame)58 visiteCaption NASA originale:"This MGS-MOC image shows a (bright) wind streak created in the lee — such as the "downwind" side (ossìa il "lato sottovento") — of a crater in far eastern Chryse Planitia.
The winds responsible for the formation of the streak blew from the North-East to the South-West".
Location near: 21,5° North; 27,4° West
Image width: ~3 km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterMag 06, 2006
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Volcanic_Features-Channels-Tharsis_Region-00.JPGChannels on Lava Flows in Tharsis (Original NASA/MGS/MSSS b/w Frame)56 visiteCaption NASA originale:"This MGS-MOC image shows ancient, Dust-covered Lava Flows and remains of leveed Lava Channels located on a Plain North/West of Jovis Tholus.
Jovis is a relatively small volcano in the Tharsis Region of Mars".
Location near: 22,4° North Lat. and 122,0° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterMag 04, 2006
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South_Polar_Features-Swiss_Cheese_Terrain-02.jpgSummertime at the South Pole (2)55 visitenessun commentoApr 29, 2006
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South_Polar_Features-Swiss_Cheese_Terrain-01.jpgSummertime at the South Pole (1)57 visiteCaption originale NASA:"This MGS-MOC image shows an undulating scene in the South Polar Region of Mars. Small, elevated mesas of smooth, relatively homogeneous-appearing material are separated by low-lying regions that are speckled and darkened in some local areas. Over the Martian Summer months, sublimation of solid carbon dioxide — the bright material in the scene — contributes to the darkening of the sides of the mesas as well as the low-lying regions between them".
Location near: 86,8° South; 341,3°West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerApr 29, 2006
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