| Ultimi arrivi - A Tribute To Mars Global Surveyor |
Craters-Unnamed_Crater_in_Terra_Sabaea-02.jpgUnnamed Crater in Terra Sabaea (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)199 visiteCaption originale:"This MGS-MOC image shows a 1,5 mt (~5 feet) per pixel view of an Impact Crater that is approximately 3 Km (about 9840 ft) in diameter. It is located in South-Western Terra Sabaea".
Location near: 21,9° South Lat. and 338,6° West Long.
Image width: ~3 km (~1,9 mi)
Illumination from: upper left
Season: Southern Summer MareKromiumOtt 16, 2011
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Aeolian_Features-Dust_Devil-MGS-02.jpgRunning Winds... (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)199 visitenessun commentoMareKromiumOtt 16, 2011
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Dunes-S2200554sub-01.jpgMigrating Dunes (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team))163 visiteCaption NASA originale:"This MGS-MOC image shows a suite of dunes in one of the several North Polar Dune Fields. The bright surfaces adjacent to some of the dunes are patches of frost. These dunes spend much of the Autumn, Winter, and Spring seasons covered with CO2 frost. Only in late Spring and in Summer are the dark windblown sands fully exposed.
Over the course of the 9+ years of the MGS mission, the MOC team has sought evidence that sand dunes may be migrating downwind over time. However, no clear examples of the movement of a whole dune have been identified. On Earth, such movement is typically detectable in air photos of the smallest active dunes over periods of a few years. Owing to the fact that the North Polar Dunes spend much of each Martian Year under a cover of frost, perhaps these move much more slowly than their frost-free, terrestrial counterparts. The sand may also be somewhat cemented by ice or minerals, likewise preventing vigorous dune migration in the present environment.
This view covers an area approximately 3 km (1.9 mi) wide and is illuminated by sunlight from the lower left. The dunes are located near 79.8°N, 127.1°W, and the picture was acquired on 11 September 2006.MareKromiumOtt 15, 2011
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Dunes-Brashear_Crater-PIA03656-01.jpgDark Dunes on Brashear Crater's Floor (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)142 visitenessun commentoMareKromiumOtt 14, 2011
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Craters-Becquerel_Crater-Layers-01.jpgBeautiful Layers inside Becquerel Crater: Human Vision (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)150 visiteOriginal caption:"This MGS-MOC image shows light-toned, layered, Sedimentary Rock Outcrops in Becquerel Crater , located in the Western Arabia Terra Region. The Crater may once have hosted a lake, into which these sediments were deposited. Although the fine, detailed layering in Becquerel was not known until the MGS-MOC first began to image these materials in 1999, the presence of a grossly-layered, light-toned feature was known from Viking orbiter images and was speculated from those data to possibly represent evidence for the presence of a former lake".
Location near: 21,5° North Lat. and 8,2° West Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern Winter MareKromiumOtt 14, 2011
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Craters-Becquerel_Crater-Layers-02.jpgBeautiful Layers inside Becquerel Crater: Camera Vision (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)153 visiteOriginal caption:"This MGS-MOC image shows light-toned, layered, Sedimentary Rock Outcrops in Becquerel Crater , located in the Western Arabia Terra Region. The Crater may once have hosted a lake, into which these sediments were deposited. Although the fine, detailed layering in Becquerel was not known until the MGS-MOC first began to image these materials in 1999, the presence of a grossly-layered, light-toned feature was known from Viking orbiter images and was speculated from those data to possibly represent evidence for the presence of a former lake".
Location near: 21,5° North Lat. and 8,2° West Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern Winter MareKromiumOtt 14, 2011
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Aeolian_Features-Windstreaks-Chrise_Planitia-MGS-01.jpgWindstreaks in Chryse Planitia (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)184 visiteCaption NASA originale:"This MGS-MOC image shows two Unnamed Impact Craters of nearly equal size, plus their associated Windstreaks. These occur in far Eastern Chryse Planitia. The Wind streaks point toward the South-West, indicating that the responsible Winds blew from the North-East. One of the two craters is shallower than the other and has a suite of large, windblown Ripples on its Floor. The shallower Unnamed Crater with the Ripples is probably older than the other, deeper Unnamed Crater".
Location near: 20,6° North Lat. and 30,1° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Winter MareKromiumOtt 12, 2011
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Channels-Inverted_Channels_in_Arabia_Terra-PIA03643-01.jpgInverted channels of Arabia Terra (1 - Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)151 visiteOriginal caption:"This MGS-MOC image shows a somewhat sinuous, nearly flat-topped Ridge, located in Eastern Arabia Terra. The ridgetop was once the Floor of a Valley, perhaps carved by running water. The Valley Floor, or material that covered the Floor, was more resistant to erosion than the surrounding rock into which the Valley was cut. Thus, over time, the Valley disappeared and its Floor was left standing high as a Ridge. Inverted Valleys are common on Mars, but they also occur on Earth".
Location near: 10,8° North Lat. and 313,2° West Long.
Image width: width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterMareKromiumOtt 12, 2011
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Channels-Inverted_Channels_in_Arabia_Terra-PIA03643-04.jpgInverted channels of Arabia Terra (2 - Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)150 visiteOriginal caption:"This MGS-MOC image shows a somewhat sinuous, nearly flat-topped Ridge, located in Eastern Arabia Terra. The ridgetop was once the Floor of a Valley, perhaps carved by running water. The Valley Floor, or material that covered the Floor, was more resistant to erosion than the surrounding rock into which the Valley was cut. Thus, over time, the Valley disappeared and its Floor was left standing high as a Ridge. Inverted Valleys are common on Mars, but they also occur on Earth".
Location near: 10,8° North Lat. and 313,2° West Long.
Image width: width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern WinterMareKromiumOtt 12, 2011
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Craters-Unnamed_Craters-Utopia_Planitia-01.jpgOld Buried Unnamed Craters in Northern Utopia Planitia (Natural Colors; credits for the additonal process. and color.: Dr Paolo C. Fienga - Lunexit Team)162 visiteOriginal caption:"This MGS-MOC image shows 2 circular features on the Plains of Northern Utopia. A common sight on the Martian Northern Plains, these rings indicate the locations of Buried Impact Craters".
Location near: 65,1° North Lat. and 261,2° West Long.
Image width: ~2 Km (~1,2 mi)
Illumination from: lower left
Season: Northern SummerMareKromiumOtt 12, 2011
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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 MareKromiumOtt 11, 2011
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Craters-Lyell_Crater-01.jpgLyell Crater's Gullies (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)185 visiteCaption originale:"This MGS-MOC image shows a suite of Gullies on a Scarp in Lyell Crater".
Location near: 69,7° South Lat. and 14,0° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SummerMareKromiumOtt 10, 2011
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