| Ultimi arrivi - A Tribute To Mars Global Surveyor |
North_Polar_Features-Polar_Cone-MGS-00.jpgNorth Polar "Cone" (Original NASA/MGS/MSSS b/w Frame)61 visiteCaption NASA originale:"This MGS-MOC image shows a cone-shaped hill, perhaps a remnant of a material that was once more laterally extensive across the area, on a textured plain in the Hyperboreus Labyrinthus Region in the North Polar Region of Mars.
The hill and its surroundings are covered with a blanket of solid CO2 which imparts a roughly homogeneous-tone to the scene.
Despite its shape, the feature is not a volcano; over the past 9 years, the MGS-MOC investigation has found no unambiguous evidence for volcanic landforms in the North Polar Region".
Location near: 79,5° North; 57,0° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringLug 10, 2006
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Craters-Unnamed_Craters-Syrtis_Major.jpgUnnamed Craters in Syrtis Major Planum (Original NASA/MGS/MSSS b/w Frame)56 visiteCaption NASA originale:"This MGS-MOC image shows a portion of Syrtis Major Planum, dominated in this area by two Impact Craters of differing age. The large one is about 1,3 Km (approx. 0,8 miles) in diameter, the smaller is about 250 mt (~820 feet) across.
The smaller Unnamed Crater has a well-defined Ejecta Blanket and Rays emanate outward from its center. The larger Unnamed Crater does not exhibit these features. The larger one is older, and its Ejecta Blanket and Rays have been removed and degraded over time".
Location near: 5,4° North; 294,2° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Northern SpringLug 09, 2006
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Troughs-Labeatis_Fossae-MGS.jpgDeep Trough in Labeatis Fossae (Original NASA-MGS-MSSS b/w Frame) 56 visiteCaption NASA originale:"This MGS-MOC image shows a portion of a trough cutting across a dust-covered plain in the Labeatis Fossae Region of Mars. Boulders derived from the layered exposures near the top of the trough walls are resting on the floor, and in some locations, the sloping sidewalls of the dusty trough".
Location near: 22,1° North; 94,5° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringLug 02, 2006
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North_Polar_Features-Dunes-MGS-00.jpgNorth Polar Dunes (Original NASA/MGS/MSSS b/w Frame)57 visiteCaption NASA originale:"This MGS-MOC image shows dunes in the North Polar Region of Mars. In this Springtime view, the dunes are largely covered by frozen Carbon Dioxide (CO2) that was deposited during the Winter months in the Northern Hemisphere. Dark spots indicate areas where the frost has begun to either sublime away, acquire a roughened texture, or both".
Location near: 77,3° North; 95,4° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringGiu 30, 2006
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Sysiphi_Planum-MGS-PCF-LXTT-02.JPGSysiphi Planum (Original NASA-MSSS RAW b/w Frame)57 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 SummerGiu 26, 2006
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Craters-Unnamed_Craters-MGS.JPGMartian "Spectacles"! (Original NASA/MGS/MSSS b/w Frame)57 visiteCaption NASA originale:"This MGS-MOC image shows a pair of partially-buried impact craters which are being exhumed on a plain east of Hellas in the Promethei Terra Region Mars".
Location near: 45,5° South; 256,5° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Autumn
Nota: "spectacles"---> occhialiGiu 19, 2006
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Craters-Galle_Crater-3D.jpgLayers of Galle Crater (3D - credits: NASA/JPL/MSSS)56 visiteCaption NASA:"This is a 3-D stereo anaglyph showing layers in Galle Crater. This anaglyph uses two MGS-MOC images acquired at slightly different viewing angles: MOC images E22-01557 and M14-02055. Owing to the specifics of the viewing geometry, the image is tilted on its side, relative to the mosaic shown in the 15 June 2006 release. In other words, in this image, North is toward the right and West is up. This anaglyph, when viewed in conjunction with the 15 June 2006 mosaic of these layers, provides a more complete sense of the cross-cutting relations between layers in the mound located in southern Galle (Happy Face) Crater. The layers are part of a mound of sedimentary rock in southern Galle — a remnant of a once more-extensive deposit of sedimentary material in this south mid-latitude impact basin.
Location near: 52,3° South Lat. and 30,1° West Long.
Image width: ~7,3 Km (~4,5 mi)
Illumination from: upper right
Anaglyph from MOC images: E22-01557 and M14-02055 Giu 16, 2006
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Troughs-Olympica_Fossae-MGS-03.JPGTroughs System in Olympica Fossae (Original NASA/MGS/MSSS b/w Frame)56 visiteCaption NASA originale:"This MGS-MOC image shows a wide, flat-floored Trough flanked by several smaller, branching Troughs in the Olympica Fossae Region of Mars. Dark and intermediate-toned Slope Streaks —both created by dry Avalanches of Dust — occur on the Trough Walls".
Location near: 25,1° North; 113,8° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterGiu 11, 2006
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Aeolian_Features-Windstreak-MGS.JPGWindstreak in Cyane Fossae57 visiteCaption NASA originale:"This MGS-MOC image shows a light-toned wind streak created in the lee — such as the downwind side — of an impact crater in the Cyane Fossae Region of Mars. Winds blowing from the bottom (South) toward the top (North) swept this scene clean of fine, bright dust except for the dust that had accumulated in a few protected areas such as that in the lee of this crater".
Location near: 42,0° North; 125,8° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringGiu 10, 2006
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North_Polar_Features-Dunes-MGS-03.JPGNorth Polar Dunes (Original NASA/MGS/MSSS b/w Frame)69 visiteCaption NASA originale:"This MGS-MOC image shows dunes covered with a seasonally-deposited layer of solid Carbon Dioxide (CO2) in the North Polar Region of Mars. The dark spots indicate areas where the CO2 frost has begun to change, either by being sublimed away, or by becoming rougher or coarser-grained, such that it appears darker than surrounding frost. Over the course of the Spring season, the frost will be completely removed and the dark sands that make up the dune field will be visible by Summer".
Location near: 77,7° North; 41,7° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
Giu 03, 2006
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Channels-Auqakuh_Vallis-MGS.JPGAuqakuh Vallis: "Old Riverbed" or "Windblown Ripples"? (Original NASA/MGS/MSSS b/w Frame)60 visiteCaption NASA originale:"This MGS-MOC image shows windblown ripples on the floor of Auqakuh Vallis.
The light-toned area, running diagonally across the scene from South-West to North-East, may be dust that has accumulated in the bottom of the valley and on top of the ripples".
Location near: 31,3° North; 299,3° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringGiu 01, 2006
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Volcanic_Features-Collapse_Pit_Chain-MGS.JPGCollapse Pit-Chain in Tharsis Region (Original NASA/MGS/MSSS b/w Frame)77 visiteCaption NASA originale:"This MGS-MOC image shows a chain of collapse pits on a dust-mantled, lava-covered plain North-East of Ascraeus Mons (one of the giant volcanoes located in the Tharsis Region of Mars).
Pit chains are associated with collapse which may be driven by several processes including, but not limited to, crustal extension owing to tectonic processes and the collapse of the roof of a lava tube".
Location near: 14,8° North Lat. and 99,1° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterMag 28, 2006
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