| Ultimi arrivi - Mars Reconnaissance Orbiter (MRO) |
PSP_009660_2020_RED~0.jpgWest Olympus Mons (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia) 131 visiteMars Local Time: 15:25 (early afternoon)
Coord. (centered): 21,5° North Lat. and 221,9° East Long.
Spacecraft altitude: 280,3 Km (such as about 175,2 miles)
Original image scale range: 28,0 cm/pixel (with 1 x 1 binning) so objects ~56,1 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,4°
Phase Angle: 47,5°
Solar Incidence Angle: 47° (meaning that the Sun is about 43° above the Local Horizon)
Solar Longitude: 114,3° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer Italia MareKromiumSet 04, 2011
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PSP_008197_2045_RED_abrowse.jpgFeatures of Olympus Mons' Aureole (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)122 visitenessun commentoMareKromiumSet 04, 2011
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Psp_010689_2025_red~0.jpgTectonic Fissure (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)134 visiteThis image of a region East of Tooting Crater is centered on a Tectonic Fissure West of the Olympus Mons Aureole. Three other Channel Systems formed along it.
The feature of note is a broad shallow Channel System exhibiting a braided pattern that abruptly changes to a steep walled channel system near the Fissure.
These steep walled channel systems are thought to be formed when ground water flowing out along a cliff undermines the slope resulting in collapse of overlying materials. Erosion then typically moves in a headward direction along the pre-existing shallow Channel System. This process is known as "Groundwater Sapping".
There are other places on Mars (such as Cerberus Fossae), where these fissures appear to have flood channels associated with them.
Within this channel there is a more resistant, cliff-forming layer near the surface with some defined horizontal Strata (such as Layers). Multiple Dark Streaks known as slope streaks originate from the base of this hard layer. Slope Streaks are generally dark when first formed and then gradually fade over time. The origin of these Slope Streaks is still under debate, but they are thought to be dry Dust Avalanches.
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Mars Local Time: 15:38 (middle afternoon)
Coord. (centered): 22,1° North Lat. and 208,7° East Long.
Spacecraft altitude: 286,2 Km (such as about 178,9 miles)
Original image scale range: 57,3 cm/pixel (with 1 x 1 binning) so objects ~1,72 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,8°
Phase Angle: 53,9°
Solar Incidence Angle: 53° (meaning that the Sun is about 37° above the Local Horizon)
Solar Longitude: 153,3° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer Italia MareKromiumSet 04, 2011
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Psp_009317_1980_red~0.jpgPortion of the Southern Wall of Olympus Mons Caldera (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)136 visiteMars Local Time: 15:21 (early afternoon)
Coord. (centered): 17,8° North Lat. and 226,6° East Long.
Spacecraft altitude: 259,3 Km (such as about 162,1 miles)
Original image scale range: 51,9 cm/pixel (with 1 x 1 binning) so objects ~1,56 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 3,3°
Phase Angle: 50,1°
Solar Incidence Angle: 47° (meaning that the Sun is about 43° above the Local Horizon)
Solar Longitude: 102,1° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer Italia MareKromiumSet 04, 2011
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PSP_002542_1080_red-1.jpgDefrosting Dunefield (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)110 visiteThis image is a close-up view of defrosting patterns on the Dunes located at the bottom of Richardson Crater. The Frost is a combination of frozen CO2 and some water ice that covers the Dunes in the Winter and Spring. As the seasonal Frost sublimes away, odd features such as Spots, Fans and Streaks form. Small Dark Streaks on the Dune "Slip-Face" Slopes may be where recent avalanches of sand, or perhaps wind, has moved the dark sand underlying the Frost, or where frost has been removed to expose the sand. Alternatively, the Dark Streaks may be patches of coarse-grained ice that are clear enough so that the dark material below the ice is visible. The Slip-Faces indicate that the general direction of sand transport is (meaning the that the Dominant Winds blow) from the right to the left across the image.
It has been hypothesized that the Dark Spots and Fans may be "Geysers" or "Cold Gas Jets" that form when sublimation processes trap gas at the bottom of the ice. The gas is released through cracks in the ice, entraining Dust from below the ice and scattering it onto the Surface to form the Dark Spots and Fans. The high resolution, stereo, and low light imaging capabilities of HiRISE has provided new insight into the processes that form these features. Repeated imaging in a variety of locations will provide a record of their development and evolution. MareKromiumAgo 28, 2011
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PSP_008144_2055_RED_abrowse-PCF-LXTT.jpgDark Slope Streaks on Olympus Mons' Aureole (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)155 visitenessun commentoMareKromiumAgo 28, 2011
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ESP_023067_0930_RED_abrowse-PCF-LXTT-1.jpgPossible Water Ice and South Polar Mesas (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)213 visiteMars Local Time: 18:17 (Middle Afternoon)
Coord. (centered): 87,1° South Lat. and 25,3° East Long.
Spacecraft altitude: 246,8 Km (such as about 154,2 miles)
Original image scale range: 24,7 cm/pixel (with 1 x 1 binning) so objects ~ 74 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 0,1°
Sun-Mars-Spacecraft (or "Phase") Angle: 74,1°
Solar Incidence Angle: 74° (meaning that the Sun is about 16° above the Local Horizon)
Solar Longitude: 319,1° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromiumAgo 26, 2011
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ESP_023066_0955_RED_abrowse-PCF-LXTT.jpgKnob located on the South Polar Layered Deposits - or "SPLD" (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)189 visiteMars Local Time: 15:37 (Middle Afternoon)
Coord. (centered): 84,5° South Lat. and 12,2° East Long.
Spacecraft altitude: 250 Km (such as about 156,3 miles)
Original image scale range: 50 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 50 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 7,2°
Sun-Mars-Spacecraft (or "Phase") Angle: 74,7°
Solar Incidence Angle: 71° (meaning that the Sun is about 19° above the Local Horizon)
Solar Longitude: 319,1° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromiumAgo 26, 2011
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ESP_023065_1205_RED_abrowse-PCF-LXTT.jpgBarchan to Linear to Transverse Dune Transition in Summer (Absolute Natural Colors; credits for the additional process. and color.: Drr Gianluigi Barca and Paolo C . Fienga - Lunar Explorer Italia)182 visiteMars Local Time: 14:14 (Early Afternoon)
Coord. (centered): 59,0° South Lat. and 16,9° East Long.
Spacecraft altitude: 266 Km (such as about 166,2 miles)
Original image scale range: 26,6 cm/pixel (with 1 x 1 binning) so objects ~ 83 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 19,9°
Sun-Mars-Spacecraft (or "Phase") Angle: 63,6°
Solar Incidence Angle: 49° (meaning that the Sun is about 41° above the Local Horizon)
Solar Longitude: 319,0° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromiumAgo 26, 2011
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ESP_023060_1445_RED_abrowse-PCF-LXTT.jpgUnnamed Crater in Terra Cimmeria (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)175 visiteMars Local Time: 14:18 (Early Afternoon)
Coord. (centered): 35,4° South Lat. and 152,5° East Long.
Spacecraft altitude: 254,3 Km (such as about 158,9 miles)
Original image scale range: 25,4 cm/pixel (with 1 x 1 binning) so objects ~ 76 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 7,4°
Sun-Mars-Spacecraft (or "Phase") Angle: 30,1°
Solar Incidence Angle: 36° (meaning that the Sun is about 54° above the Local Horizon)
Solar Longitude: 318,8° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromiumAgo 26, 2011
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ESP_023062_1365_RED_abrowse-PCF-LXTT.jpgPits within Mantle Material in an Unnamed Crater located South of Reull Vallis (Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)178 visiteMars Local Time: 14:17 (Early Afternoon)
Coord. (centered): 43,0° South Lat. and 98,4° East Long.
Spacecraft altitude: 253,4 Km (such as about 158,3 miles)
Original image scale range: 25,3 cm/pixel (with 1 x 1 binning) so objects ~ 76 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 1,2°
Sun-Mars-Spacecraft (or "Phase") Angle: 40,8°
Solar Incidence Angle: 40° (meaning that the Sun is about 50° above the Local Horizon)
Solar Longitude: 318,9° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromiumAgo 26, 2011
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ESP_023331_1670_RED_abrowse-PCF-LXTT.jpgHematite in Capri Chasma (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)206 visiteMars Local Time: 14:13 (Early Afternoon)
Coord. (centered): 13,0° South Lat. and 311,9° East Long.
Spacecraft altitude: 271,3 Km (such as about 169,6 miles)
Original image scale range: 27,1 cm/pixel (with 1 x 1 binning) so objects ~ 81 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 14,2°
Sun-Mars-Spacecraft (or "Phase") Angle: 18,5°
Solar Incidence Angle: 33° (meaning that the Sun is about 57° above the Local Horizon)
Solar Longitude: 330,6° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar ExplorerMareKromiumAgo 25, 2011
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