| Risultati della ricerca nelle immagini - "Boundary" |
ESP_014426_1580_RED_abrowse.jpgTerra Sabaea and Terra Tyrrhena Boundary (Natural Colors; credits: Lunexit)60 visitenessun commentoMareKromium
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ESP_018720_2655-PCF-LXTT.jpgSteep North Polar "Boundary" (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)156 visitenessun commentoMareKromium
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ESP_019181_2655_RED_abrowse.jpgNorth Polar Boundary (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team:)77 visitenessun commentoMareKromium
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ESP_019195_2655_RED_abrowse.jpgNorth Polar Boundary (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team:)104 visiteMars Local Time: 14:09 (early afternoon)
Coord. (centered): 85,3° North Lat. and 160,3° East Long.
Spacecraft altitude: 324,6 Km (such as about 202,9 miles)
Original image scale range: 32,5 cm/pixel (with 1 x 1 binning) so objects ~97 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 10,8°
Sun-Mars-Spacecraft (or Phase) Angle: 61,9°
Solar Incidence Angle: 71° (meaning that the Sun is about 19° above the Local Horizon)
Solar Longitude: 141,1° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Dr Paolo C. Fienga - Lunexit TeamMareKromium
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PSP_001414_2165_RED_abrowse.jpgThe Dichotomy Boundary (Natural Colors; credits: Lunexit)54 visiteThis observation crosses over a part of the so-called "Dichotomy Boundary" of Mars, which is a Region of the Red Planet that separates the low-lying Northern Plains from the older Southern Highlands.
In the northern part of the scene (Dx), much of the surface is covered with small boulders, most only 1 to 2 meters wide (1 meter is approx. 1 yard). In other areas, it appears that sand or dust has accumulated in depressions, forming light patches. These areas also show short sinuous or linear features, likely ripples formed from wind-blown material.
The southern part (Sx) contains an old valley, now mantled by later deposits, and has a pitted texture due to erosion.
It has been proposed that the Lowlands were once filled by an ocean. If that is the case, then several arcuate or linear features along the Boundary slope could be old shorelines - but this interpretation is still debated. The features have been modified by erosion, and in some cases appear to slope towards the Highlands.MareKromium
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Terra_Sabaea-PIA13554.jpgThe Boudary between Highlands and Lowlands (Natural Colors; credits for the additional process. and color.: Dr Gianluigi Barca - Lunexit Team)76 visiteOrbit Number: 38884
Latitude (centered): 30,4564°
Longitude (East): 81,8197°
Instrument: VIS
Captured: September, 20th, 2010MareKromium
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