Risultati della ricerca nelle immagini - "Defrosting" |
Craters-Unnamed_Crater-South_Polar_Regions-PIA03921-PCF-LXTT.jpgUnnamed South Polar Defrosting Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)58 visitenessun commentoMareKromium
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Craters-Unnamed_Defrosting_Crater-PIA03921-00.jpgUnnamed Defrosting Crater (Original NASA/MGS/MSSS b/w Frame)66 visiteCaption NASA originale:"This MGS-MOC image shows a Surface in the South Polar Region, covered by CO2 Frost. In this springtime scene, the Frost has begun to sublime so that Sandy Surfaces exhibit an abundance of Dark Spots. The circular depression is probably the remains of an Impact Crater. In summer, the Spotted Surfaces in this image would be darker than their surroundings, because they are patches of Windblown Sand".
Location near: 67,6° South Lat. and 254,3° West Long.
Image width: ~3 Km (~1,9) mi
Illumination from: upper left
Season: Southern Spring
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Craters-Unnamed_Defrosting_Crater-PIA03921-01.jpgUnnamed Defrosting Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)225 visiteCaption NASA originale:"This MGS-MOC image shows a Surface in the South Polar Region, covered by CO2 Frost. In this springtime scene, the Frost has begun to sublime so that Sandy Surfaces exhibit an abundance of Dark Spots. The circular depression is probably the remains of an Impact Crater. In summer, the Spotted Surfaces in this image would be darker than their surroundings, because they are patches of Windblown Sand".
Location near: 67,6° South Lat. and 254,3° West Long.
Image width: ~3 Km (~1,9) mi
Illumination from: upper left
Season: Southern SpringMareKromium
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ESP_016280_2655_RED_abrowse.jpgMartian Tears... (possible Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)62 visitenessun commentoMareKromium
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ESP_023938_1210-PCF-LXTT-00.jpgDefrosting Southern Gully and Dunes (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)201 visiteMars Local Time: 14:30 (early afternoon)
Coord. (centered): 58,5° South Lat. and 305,3° East Long.
Spacecraft altitude: 251,3 Km (such as about 157,1 miles)
Original image scale range: 25,1 cm/pixel (with 1 x 1 binning) so objects ~ 75 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 1,9°
Phase Angle: 65,1°
Solar Incidence Angle: 64° (meaning that the Sun is about 26° above the Local Horizon)
Solar Longitude: 355,6° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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ESP_024428_2605-PCF-LXTT-00a.jpgFeatures of the Defrosting North Polar Erg (CTX Frame "A" - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)188 visiteMars Local Time: 13:17 (early afternoon)
Coord. (centered): 80,2° North Lat. and 217,1° East Long.
Spacecraft altitude: 317,6 Km (such as about 198,5 miles)
Original image scale range: 63,5 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 91 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 2,4°
Phase Angle: 76,3°
Solar Incidence Angle: 75° (meaning that the Sun is about 15° above the Local Horizon)
Solar Longitude: 14,3° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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ESP_024428_2605-PCF-LXTT-00b.jpgFeatures of the Defrosting North Polar Erg (CTX Frame "B" - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)184 visiteMars Local Time: 13:17 (early afternoon)
Coord. (centered): 80,2° North Lat. and 217,1° East Long.
Spacecraft altitude: 317,6 Km (such as about 198,5 miles)
Original image scale range: 63,5 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 91 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 2,4°
Phase Angle: 76,3°
Solar Incidence Angle: 75° (meaning that the Sun is about 15° above the Local Horizon)
Solar Longitude: 14,3° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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ESP_024428_2605-PCF-LXTT-00c.jpgFeatures of the Defrosting North Polar Erg (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)189 visiteMars Local Time: 13:17 (early afternoon)
Coord. (centered): 80,2° North Lat. and 217,1° East Long.
Spacecraft altitude: 317,6 Km (such as about 198,5 miles)
Original image scale range: 63,5 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 91 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 2,4°
Phase Angle: 76,3°
Solar Incidence Angle: 75° (meaning that the Sun is about 15° above the Local Horizon)
Solar Longitude: 14,3° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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North_Polar_Features-Dunes-MGS-05.jpgNorth Polar Dunes (Original NASA/MGS/MSSS b/w Frame)56 visiteCaption NASA originale:"This MGS-MOC image shows dunes in the North Polar Region of Mars. In this scene, the dunes and the plain on which the dunes reside, are at least in part covered by a bright CO2 frost. Dark spots indicate areas where the frost has begun to change, either by subliming away to expose dark sand, changing to a coarser particle size, or both. The winds responsible for the formation of these dunes blew from the South-West toward the North-East.
Location near: 76,3° North; 261,2° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
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North_Polar_Features-Dunes-MGS-07.jpgNorth Polar Dunes (Original NASA/MGS/MSSS b/w Frame)53 visiteCaption NASA originale:"This MGS-MOC image shows dunes in the Martian North Polar Region. The dunes are composed of dark, coarse (--> ruvido, di tessitura grossolana) sand. The white areas around the dunes are the last remaining areas of seasonal CO2 frost cover.
The solid CO2 accumulates during the Autumn and Winter and sublimes (goes from solid to gas) away in the Spring.
This image was taken near the end of the Northern Spring".
Location near: 78,0° North; 244,5° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
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North_Polar_Features-Dunes-MGS-10.jpgDefrosting North Polar Dunes (Original NASA/MGS/MSSS b/w Frame)53 visiteCaption NASA originale:"This MGS-MOC image shows a portion of a sand dune field in the North Polar Region of Mars. The dunes are covered with frozen CO2, which accumulated over the Autumn and Winter months in the Northern Hemisphere. During the Spring, the time at which this image was acquired, the CO2 begins to sublime away, going directly from solid to gas, just as dry ice does here on Earth.
The dark spots, streaked by blowing winds, may be places where the frost has been removed (exposing underlying dark sand), places where the grain size or roughness of the frost has increased (increasing shadowing due to the change in texture), or both".
Location near: 79,7° North Lat. and 148,3° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
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North_Polar_Features-North_Polar_Scarp-MGS-00.jpgNorth Polar Panorama (Original NASA/MGS/MSSS b/w Frame)57 visiteCaption NASA originale:"This MGS-MOC image shows a steep slope in the North Polar Region of Mars. The stripes indicate an exposure of layered material; the variations in brightness among the stripes are the result of varying amounts and textures on seasonal Carbon Dioxide (CO2) frost. At the time the image was acquired - such as in June 2006 -, the Carbon Dioxide frost was beginning to sublime way, leaving a variety of different patterns in frost distribution".
Location near: 85,2° North Lat. and 122,7° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
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