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Enceladus-N00185224_to_N00185282-EB-MF-LXTT-IPF.gifFountains of Light (a GIF-Movie by Elisabetta Bonora and Marco Faccin - Lunexit Team)99 visitenessun commentoMareKromiumMar 30, 2012
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Enceladus-N00185279-82_-_cl1cl2,bl1,red,ir1,ir3_filter-EB-MF-LXTT-IPF.jpgFountains of Light (Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin - Lunexit Team)90 visitenessun commentoMareKromiumMar 30, 2012
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PSP_004277_1530_RED-PCF-LXTT-01.jpgFeatures of Holden Crater's Rim (CTX Frame "B" - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)80 visiteHiRISE image PSP_004277_1530 covers a portion of the rim of Holden Crater, revealing breaches created when water over-topped the Rim and incised a series of Channels as it flowed down the Crater Wall.
The water responsible for the Channels was impounded outside of the rim of Holden in Uzboi Vallis (Holden Crater itself is approx. 150 Km in diameter).
Uzboi Vallis was interrupted when Holden Crater formed and the Rim formed an effective, temporary damn to flow farther to the North. Once the Uzboi Basin filled, water began flowing into Holden again, creating a series of low fan-shaped Deltas, alluvial deposits and a shallow, but relatively short-lived lake.
The Channels in this image were only active for a short time, as a Channel just to the East cut quickly into the Rim and became responsible for most of the drainage into the Crater.
The fact that most of the fan-shaped Deltas radiate from the Dominant Channel to the East rather than those in this image supports this scenario. MareKromiumMar 30, 2012
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PSP_004277_1530_RED-PCF-LXTT-00.jpgFeatures of Holden Crater's Rim (CTX Frame "A" - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)69 visiteHiRISE image PSP_004277_1530 covers a portion of the rim of Holden Crater, revealing breaches created when water over-topped the Rim and incised a series of Channels as it flowed down the Crater Wall.
The water responsible for the Channels was impounded outside of the rim of Holden in Uzboi Vallis (Holden Crater itself is approx. 150 Km in diameter).
Uzboi Vallis was interrupted when Holden Crater formed and the Rim formed an effective, temporary damn to flow farther to the North. Once the Uzboi Basin filled, water began flowing into Holden again, creating a series of low fan-shaped Deltas, alluvial deposits and a shallow, but relatively short-lived lake.
The Channels in this image were only active for a short time, as a Channel just to the East cut quickly into the Rim and became responsible for most of the drainage into the Crater.
The fact that most of the fan-shaped Deltas radiate from the Dominant Channel to the East rather than those in this image supports this scenario. MareKromiumMar 30, 2012
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ESP_026051_2160-PCF-LXTT-01.jpgSerpentine Dust Devil in Amazonis Planitia (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)114 visiteA "towering" (----> very tall, of imposing height) Dust Devil (also hereafter written "DD") casts a serpentine shadow over the Surface in this beautiful, late Springtime image of the Amazonis Planitia Region of Mars. The length of the shadow of this DD indicates (a simple calculation is needed and all the necessary data to make it are available) that the Dust Plume is/should be more than 800 meters, or about half a mile, in height; on the other hand, the delicate arc that gave to the Dust Plume its serpentine appearence, was most likely produced by a Westerly (----> coming from the West) Breeze which blew at about 250-meter of its height, thus causing the top of the Plume itself to bend towards the East. The Dust Plume itself is approximately 30 meters in diameter.
A consistent number of Dust Devil Tracks (also hereafter written "DD Tracks" or "DDT" for short) trend from the North/West to the South/East and it is really interesting to notice that these Tracks are quite bright, whereas Dust Devil Tracks visible elsewhere on Mars are usually dark. However, Dark DD Tracks are believed to form where Bright Dust is lifted from the Surface by these swirling small Hurricanes, thus revealing a darker Substrate; but here, in the Amazonis Planitia Region of Mars, the Dust Cover (such as the amount of Dust covering the Surface of the Region) is still too thick to be penetrated by such kind of a scouring (as a matter of fact, you have to remember that a thick blanket of Bright and fresh Dust was deposited over Amazonis Planitia recently, during a Regional and - relatively - long Dust Storm, that occurred right before the arrival of the NASA - Mars Reconnaissance Orbiter). Anyway, the Bright Tracks could also form when the already settled Dust is stirred up by the strong Winds generated by the Dust Devils (Tangential Winds whose Speed reached up to 70 mph - miles-per-hour - have, actually, already been recorded in previous HiRISE images of other Dust Devils).
It is also extremely interesting to underline that this image was taken during the time of year when Mars is farthest from the Sun. Just as on Earth, Martian Winds are powered by Solar Heating. Exposure to the Sun's Rays should be at a minimum during this season and yet, even now, Dust Devils act relentlessly to clean the Surface of freshly deposited Dust, a little bit at a time.
Picture's Data
Mars Local Time: 15:03 (Early Afternoon)
Coord. (centered): 35,8° North Lat. and 207,5° East Long.
Spacecraft altitude: 307,7 Km (such as about 192,3 miles)
Original image scale range: 30,8 cm/pixel (with 1 x 1 binning) so objects ~ 92 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 16,1°
Phase Angle: 25,1°
Solar Incidence Angle: 41° (meaning that the Sun is about 49° above the Local Horizon)
Solar Longitude: 71,3° (Northern Spring)
Credits: NASA/JPL/University of ArizonaMareKromiumMar 23, 2012
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ESP_026051_2160-PCF-LXTT-02.jpgSerpentine Dust Devil in Amazonis Planitia (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)83 visitenessun commentoMareKromiumMar 23, 2012
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SOL230-02-2P146800603ESF8600P2696L6M1.jpgSunset - Sol 230 (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 105 visitenessun commentoMareKromiumMar 23, 2012
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SOL094-2P134687142EDN2700P2681L5M1-PCF-IPF.jpgDawn over Gusev Crater - Sol 94 (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)81 visiteForse si tratta di frames ridondanti, ma vedere - sia pure solo in una fotografia - l'alba su un Pianeta che non è la Terra, oggi, a noi continua a sembrare un miracolo ed un evento a metà tra la Realtà e la Mètafisica.
Frame PanCam ottenuto alle ore 06:07 Mars Local Solar Time.
MareKromiumMar 23, 2012
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Dunes-Tempe_Terra-PIA15395-PCF-LXTT.jpgDunes in Tempe Terra (Absolute Natural Colors; credits for the additional process. and color.: Drr Gianluigi Barca and Paolo C. Fienga - Lunexit Team)132 visiteOrbit Number: 44792
Latitude: 34,494° North
Longitude: 306,000° East
Instrument: VIS
Captured: January, 19th, 2012
Mars Local Solar Time: 10:39 (Late Morning Hours)
MareKromiumMar 06, 2012
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Y-Mare_Moscoviense.jpgExtremely unusual Surface Feature in Mare Moscoviense278 visite...La qualità intrinseca dell'immagine è tutt'altro che buona, e quindi non ci sentiamo di pronunciarci con definitorietà sul dettaglio evidenziato dal nostro Amico e Partner Miro, che ringraziamo di Cuore per la segnalazione.
L'unica cosa che possiamo dire, con tranquillità, è che qualora il dettaglio si rivelasse un effettiva Surface Feature e NON un image-artifact, allora la questione circa la possibilità che, sulla Luna, ci sia "Qualcuno" o "Qualcosa", sarebbe DEFINITIVAMENTE risolta...MareKromiumMar 06, 2012
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Volcanic_Features-Lava_Flows-TR-PIA15396-PCF-LXTT.jpgLava Flows in Tharsis (Slightly Saturated Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)103 visiteOrbit Number: 44818
Latitude: 4,62491° North
Longitude: 272,28400° East
Instrument: VIS
Captured: January, 21st, 2012
Mars Local Solar Time: 14:11 (Early Afternoon)
MareKromiumMar 06, 2012
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Volcanic_Regions-Tharsis-Lava_Flows-PIA15362-PCF-LXTT.jpgLava Fields between Echus Chasma and Tharsis (Slightly Saturated Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)87 visiteOrbit Number: 44743
Latitude: 11,6303° North
Longitude: 276,1480° East
Instrument: VIS
Captured: January, 15th, 2012
Mars Local Solar Time: 09:59 (Middle Morning Hours)
MareKromiumMar 06, 2012
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