| Piú viste - Mars Reconnaissance Orbiter (MRO) |
ESP_020323_2050_RED_abrowse-PCF-LXTT.jpgFan-shaped Deposit (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team:)117 visiteThis HiRISE image shows a Fan-shaped Deposit at the distal end of a Valley. The Fan is approximately 3,5x3,7 Km in size. While other similar Fans on Mars display stair-step terracing along their edges, this particular Fan does not show any Terraces. There is a Valley, instead, that appears to be the source of material that now composes much of the Fan.
Martian Fans are thought to be either Alluvial or Deltaic in origin.
On Earth, Alluvial Fans form when material upslope is eroded and transported by water down a confined Valley until reaching a flatter, broader surface downslope where the material is deposited to produce a Fan-shaped Surface Feature .
Deltaic Fans, on the other hand, form when rivers transport sediment downstream until an unconfined and flatter surface is reached under water, at which time the sediment is deposited in a Fan-shape.
Whether the Martian Fan formed by Alluvial or Deltaic processes in unknown, but both processes require a fluid (most likely water) that carved the Valley and transported the sediment downstream.MareKromium
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Psp_002455_1320_red-PCF-LXTT.jpgDunes in Proctor Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)117 visiteThis image shows the edge of a Dark Dunefield on the Floor of Proctor Crater, an approx. 150 Km diameter Impact Crater located in the Southern Highlands of Mars.
Many smaller and brighter "Bed-Forms", most likely small dunes or Granule Ripples, cover the substrate between the larger Dark Dunes as well as most of the Floor of Proctor Crater. In many locations, large (Erratic) Boulders are seen on the same surfaces as the bright Bed-Forms.
The Dark Dunes stratigraphically overlie the small bright Bed-Forms, indicating that the Dark Dunes formed more recently. However in several areas, the Dark Dunes appear to influence the orientation of the small Bright Dunes, possibly by wind flowing around the larger ones, suggesting that both Dark and Bright Bed-Forms are coeval.MareKromium
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ESP_022584_1240_RED_abrowse-PCF-LXTT.jpgThe Surface of Terra Sirenum (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)117 visitenessun commentoMareKromium
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ESP_023264_1680_RED_abrowse-PCF-LXTT-00.jpgFeatures of Margaritifer Terra (CTX Frame - Enhanced Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)117 visiteMars Local Time: 14:09 (early afternoon)
Coord. (centered): 12,1° South Lat. and 339,8° East Long.
Spacecraft altitude: 265,1 Km (such as about 165,7 miles)
Original image scale range: 53 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 59 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,4°
Sun-Mars-Spacecraft (or "Phase") Angle: 31,2°
Solar Incidence Angle: 32° (meaning that the Sun is about 58° above the Local Horizon)
Solar Longitude: 327,7° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromium
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ESP_023034_1755_RED_abrowse-PCF-LXTT.jpgSlope of Gale Crater (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)117 visiteMars Local Time: 14:08 (Early Afternoon)
Coord. (centered): 4,2° South Lat. and 137,4° East Long.
Spacecraft altitude: 269,5 Km (such as about 168,5 miles)
Original image scale range: 53,9 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 62 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 3,7°
Sun-Mars-Spacecraft (or "Phase") Angle: 37,4°
Solar Incidence Angle: 34° (meaning that the Sun is about 56° above the Local Horizon)
Solar Longitude: 317,7° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromium
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ESP_025082_2295-PCF-LXTT-1.jpgUnnamed Crater with Gullies in Vastitas Borealis (CTX Frame + EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)117 visiteMars Local Time: 14:45 (early afternoon)
Coord. (centered): 49,1° North Lat. and 21,1° East Long.
Spacecraft altitude: 335,5 Km (such as about 209,7 miles)
Original image scale range: 33,6 cm/pixel (with 1 x 1 binning) so objects ~ 1 mt and 1 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 25,5°
Sun - Mars - MRO (or "Phase") Angle: 27,1°
Solar Incidence Angle: 48° (meaning that the Sun is about 42° above the Local Horizon)
Solar Longitude: 38,0° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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ESP_025297_1730-PCF-LXTT-02.jpgDunes and Ripples on the Floor of Jus Chasma (EDM n.1 - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)117 visiteMars Local Time: 14:50 (early afternoon)
Coord. (centered): 7,0° South Lat. and 275,6° East Long.
Spacecraft altitude: 265,6 Km (such as about 166,0 miles)
Original image scale range: 26,6 cm/pixel (with 1 x 1 binning) so objects ~ 80 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,1°
Sun - Mars - MRO (or "Phase") Angle: 48,9°
Solar Incidence Angle: 49° (meaning that the Sun is about 41° above the Local Horizon)
Solar Longitude: 45,6° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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PSP_006162_1365_RED_abrowse-PCF-LXTT.jpgCentral Peak Gullies (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)116 visitenessun commentoMareKromium
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ESP_022582_1860_RED_abrowse-PCF-LXTT.jpgFeatures of Ulysses Fossae: Fissures (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)116 visitenessun commentoMareKromium
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ESP_022568_1730_RED_abrowse-PCF-LXTT.jpgFeatures of Noctis Labyrinthus (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)116 visitenessun commentoMareKromium
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ESP_023492_0885_RED_abrowse-PCF-LXTT.jpgSouth Polar Features: Residual Cap (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)116 visiteMars Local Time: 20:36 (early evening hours)
Coord. (centered): 88,5° South Lat. and 337,3° East Long.
Spacecraft altitude: 255,6 Km (such as about 159,8 miles)
Original image scale range: 51,1 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 53 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 17,3°
Sun-Mars-Spacecraft (or "Phase") Angle: 90,9°
Solar Incidence Angle: 82° (meaning that the Sun is about 8° above the Local Horizon)
Solar Longitude: 337,4° (Northern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunar Explorer ItaliaMareKromium
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ESP_025297_1730-PCF-LXTT-01.jpgDunes and Ripples on the Floor of Jus Chasma (CTX Frame n.2 - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)116 visiteMars Local Time: 14:50 (early afternoon)
Coord. (centered): 7,0° South Lat. and 275,6° East Long.
Spacecraft altitude: 265,6 Km (such as about 166,0 miles)
Original image scale range: 26,6 cm/pixel (with 1 x 1 binning) so objects ~ 80 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,1°
Sun - Mars - MRO (or "Phase") Angle: 48,9°
Solar Incidence Angle: 49° (meaning that the Sun is about 41° above the Local Horizon)
Solar Longitude: 45,6° (Northern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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