| Piú votate - A Tribute To Mars Global Surveyor |
Craters-Spallanzani_Crater-MGS-01.jpgLayered "Mesa" inside Spallanzani Crater (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)177 visiteCaption NASA originale:"This MGS-MOC image shows a layered, light-toned Mesa among other Layered Materials exposed in a mound that covers much of the Floor of Spallanzani Crater".
Location near: 58,3° South Lat. and 273,9° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Summer MareKromium
(1 voti)
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Dunes-Dark_Dunes-Noachis_Terra-PIA07351-01.jpgDark Dunes in Noachis Terra (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)165 visiteCaption NASA originale:"This MGS-MOC image shows low albedo Sand Dunes on the Floor of an Unnameed Crater in Southern Noachis Terra".
Location near: 52.5° South Lat. and 336.9° West Long.
Image width: ~3,0 Km (~1,9 mi)
Illumination from: upper left
Season: Southern AutumnMareKromium
(1 voti)
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Craters-Unnamed_Craters_with_Sedimentary_Rock_Outcrops-PIA07127-01.jpgSedimentary Rocks (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)155 visiteCaption NASA originale:"Burial and Exhumation of Impact Craters, and their destruction by erosion, are common and repeated themes all over the Surface of Mars. Many Craters in Western Arabia Terra exhibit light-toned, Layered Outcrops of ancient Sedimentary Rock. Like the Sedimentary Rocks explored further to the South in Meridiani Planum by the Opportunity Mars Exploration Rover (MER-B), these "Intracrater Sedimentary Rocks" may have been deposited in water. This MGS-MOC image shows an example of light-toned Sedimentary Rocks outcropping in an Unnamed Crater that is much farther North than most of the similar examples in Western Arabia Terra. This one is located near 36,6° North Lat. and 1,4° West Long. and shows several old Impact Craters in various states of erosion and exhumation from beneath and within the Sedimentary Rock Materials. The image covers an area of approx. 3 Km".
MareKromium
(1 voti)
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Dunes-Dark_Dunes-Chasma_Boreale-PIA07350-01.jpgDark Dunes in Chasma Boreale (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)141 visiteCaption NASA originale:" This MGS-MOC image shows Dark Sand Dunes overlying an eroded, layered substrate in Chasma Boreale, amid the materials of the Martian North Polar Cap".
Location near: 84,5° North Lat. and 358,3° West Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern SummerMareKromium
(1 voti)
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Dunes-Noachis_Terra-01.jpgDark Dunes in Noachis Terra (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)155 visiteCaption originale:"This MGS-MOC image shows Dark Sand Dunes and relatively small, light-toned, windblown Ripples on the Floor of an Unnamed Crater located in central Noachis Terra".
Location near: 50,0° South Lat. and 353,7° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern AutumnMareKromium
(1 voti)
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Craters-Unnamed_Crater-PIA06699-PCF-LXTT.jpgDark Slope Streaks (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)114 visiteCaption NASA:"Dark Slope Streaks are a common feature on the Slopes thickly-mantled by Dust in the Tharsis, Arabia, and Western Amazonis Planitia egions of Mars. Less common are light-toned Slope Streaks, which often occur in the same area as Dark Streaks. They are most common in Arabia Terra, and some are shown in this MGS image. Slope Streaks are probably the result of sudden Avalanches of extremely dry Dust. The behavior of the avalanching dust is somewhat fluid-like and it is a phenomenon often observed during the Martian year.
MareKromium
(1 voti)
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Chaotic_Terrain-Eos_Chaos-01.jpgFeatures of Eos Chaos: Circular Butte (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)222 visiteLocation near: 12,9° South Lat. and 49,5° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Southern SummerMareKromium
(1 voti)
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Deuteronilus_Mensae-PCF-LXTT-04.jpgFeatures of Deuteronilus Mensae (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 152 visiteCaption NASA:"Subtle and not-so-subtle color variations seen in this composite of MOC images M23-01279 and M23-01280 (acquired on January 19, 2001) trace both the movement of Dark Sand of possible Volcanic origin and fresh, Dark Outcrops of unweathered Bedrock".MareKromium
(1 voti)
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Deuteronilus_Mensae-PCF-LXTT-05.jpgFeatures of Deuteronilus Mensae (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 157 visitenessun commentoMareKromium
(1 voti)
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Hills-Utopia_Planitia-PCF-LXTT.jpgBouldery Hill in Utopia Planitia (Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)153 visiteCaption NASA originale:"Boulders are one of the possible keys to determining which processes have eroded, transported and deposited material on Mars (i.e.: Landslides, Mudflows, Flood Debris etc.).
During the first year in orbit, MGS-MOC obtained pictures with resolutions between 2 and 30 mt per pixel. It was found that Boulders are difficult to identify on Mars in images with resolutions worse than about 2-3 meters per pixel. Some rather larger Boulders (larger than about 10 mt in size) have already been seen on Mars by the orbiting camera.
This is a feat similar to that which can be obtained by "spy" satellites on Earth. The MOC image 53104 subframe shown here features a low, rounded Hill in South/Eastern Utopia Planitia. Each of the small, lumpy features on the top of this Hill is a Boulder.
In this picture, Boulders are not seen on the surrounding Plain. These Boulders are interpreted to be the remants of a layer of harder rock that once covered the top of the Hill, but was subsequently eroded and broken up by weathering and wind processes".MareKromium
(1 voti)
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Craters-Unnamed_Craters-MGS-PCF-LXTT.jpgMartian Spectacles! (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)158 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 AutumnMareKromium
(1 voti)
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Craters-Unnamed_Crater-North_Polar_Regions-MGS-2.jpgUnnamed Crater in the Northern Plains (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)121 visitenessun commentoMareKromium
(1 voti)
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