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Psp_001840_2000_red.jpgTharsis' Plains (natural colors; credits: Lunar Explorer Italia)58 visiteThis HiRISE image samples the plains between the large shelf volcanoes in the Tharsis Region of Mars.
The long scarps in the area have been formed by faults as the ground was pulled apart. The large circular depression on the edge of the image is a giant collapse pit that appears to be related to the opening up of crust.
If you look at this image carefully, much of the plains appears blurry, as if the picture was out of focus. But HiRISE remains in perfect focus and it is Mars that is actually this blurry. Soft wind-blown dust mutes all the features in the area to create this effect.MareKromiumNov 30, 2008
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Psp_001840_1660_red.jpgVolcanic Vent in Syria Planum (natural colors; credits: Lunar Explorer Italia)59 visitePrevious images of this area by other space missions indicate that this is a shield volcano with very shallow slopes. What HiRISE reveals is that it is completely covered by a blanket of dust.
While volcanic featues remain obscure, the dust does exhibit some very strange patterns. As you zoom into the middle of the image, the ground appears covered with a fine network of light and dark polygons. But at full resolution, it can be seen that these polygons are actually the edges of small scallops.
The dust is apparently held together by some unknown means, giving it sufficient strength to be carved into this strange pattern.MareKromiumNov 30, 2008
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PSP_001331_2260andPSP_001872_2260-MidNorthernLatitudeScallopedTerrain.jpgScalloped Terrain (Hi-def-3D - possible True Colors; credits: Dr M. Faccin & Lunar Explorer Italia)80 visiteLatitude (centered): 45,6° North
Longitude (East): 93,7°
Range to target site: 298,4 Km (approx. 186,5 miles)
Original image scale range: 29,9 cm/pixel (with 1 x 1 binning) so objects ~90 cm across are resolved
Map projected scale: 25 cm/pixel and North is up
Map projection: EQUIRECTANGULAR
M.L.T.: 15:19 (early afternoon)
Emission angle: 0,4°
Phase angle: 49,4°
Solar Incidence Angle: 49°, with the Sun about 41 ° above the Local Horizon
Solar Longitude: 132,2° (Northern Summer)MareKromiumNov 28, 2008
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PSP_002290_1585andPSP_001868_1585-MemnoniaFossae-Channel-CollapseFeatures.jpgChannel and Graben in Memnonia Fossae (Hi-Def-3D - Extremely Enhanced Natural Colors; credits: Dr M. Faccin & Lunar Explorer Italia)57 visiteLatitude (centered): 21,5° South
Longitude (East): 211,2 °
Range to target site: 261,1 Km (approx. 163,2 miles)
Original image scale range: 26,1 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved
Map projected scale: 25 cm/pixel and North is up
Map projection: EQUIRECTANGULAR
M.L.T.: 15:37 (middle afternoon)
Emission angle: 9,3°
Phase angle: 70,6°
Solar Incidence Angle: 63°, with the Sun about 27 ° above the Local Horizon
Solar Longitude: 153,1° (Northern Summer)MareKromiumNov 28, 2008
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PSP_010269_1900_RED.jpgVolcanic Fissure Vent in Elysium Planitia (natural colors; credits: Lunexit)57 visiteThis observation shows lava-covered plains in the Elysium Planitia region of Mars, located near the equator.
Two distinct lavas are visible in this image. The darker lava to the north (top) is the edge of the youngest major lava flow on Mars; it was fed by a voluminous eruption that coursed through the Athabasca Valles channel system.
The lighter-toned lava that covers the remainder of this image is older and dustier. It has a striped appearance due to slender dunes or ripples composed of windblown materials that are oriented northwest-southeast.
The most prominent feature in this image is the discontinuous line of pits and troughs that cuts across its center. It is an ancient volcanic fissure vent. Lava once erupted through this fracture onto the surface. The irregular depressions around the troughs may either be due to near-vent erosion by the lava or to the ponding and drain-back of the lava around the vent.
MareKromiumNov 27, 2008
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PSP_010334_1760_RED.jpgYardangs in Southern Amazonis Planitia (natural colors; credits: Lunexit)58 visiteThis image shows Yardangs, or Ridges formed from wind abrasion, in the Southern Amazonis Planitia, which is located between the Tharsis and Elysium Volcanic Provinces on Mars.
Yardangs typically form in dry, desert environments with strong prevailing winds that are unidirectional and carry an abrasive sediment load. Abrasive winds erode the surface into parallel elongate landforms, or ridges, that are often three or more times longer than they are wide. When viewed from above, these landforms resemble the hull of a boat. Yardangs typically form in easily-eroded material, most likely sedimentary rock or volcanic ash deposits that contain some amount of sand. Sometime after the formation of these landforms, they were covered by a relatively thin, uniform coating of dust giving the area a monotone appearance. Dark slope streaks, interpreted as forming by avalanching of the dry dust, are visible on several of the slopes.
Yardangs are found on both Earth and Mars and are common on Mars in the Regions West and South-West of Olympus Mons, such as the area in this image in the southern Amazonis Planitia.MareKromiumNov 27, 2008
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Psp_009709_1810_red.jpgA "segment" of Hydraotes Chaos (natural colors; credits: Lunexit)57 visiteHydraotes Chaos is an Equatorial Region of Chaotic Terrain located near some of the large outflow channels on Mars. Chaotic terrain near the Outflow Channels (ancient flood channels) is thought to form when ices beneath the surface rapidly become liquid or gaseous and escapes, and the remaining solid material collapses.
Chaotic terrain is called “chaotic” because it consists of a large jumble of randomly shaped Mesas (Hills) and Troughs. Many regions of Chaotic Terrain are located at the head (start) of the outflow channels, suggesting that the origins of the two classes of feature might be related to each other.
The Mesa located in the center of the image has elongated depressions that might be evidence of past fluvial activity.
Nota: questo dettaglio si riferisce ad una zona "famosa" per gli Eso-Archeologi...Quale?
Ma è la zona su cui dovrebbe sorgere la famosa "Città di Hydraotes Chaos", la Città del Bacino Alluvionale che è stata "vista" da illustri personaggi quali il Dr J. Skipper, il Dr R. Hoagland ed il nostrano Ing. E. Piccaluga.
Ora, avendo questa immagine davanti (che PARLA DA SOLA!), noi ci aspetteremmo due reazioni da questi personaggi:
1) se vogliono essere coerenti, allora devono dire che l'immagine è falsa o che è stata taroccata, per nascondere la "Città" oppure
2) se vogliono essere onesti devono cospargersi il capo di cenere, chiedere scusa alle migliaia di Appassionati presi per il fondo-schiena e quindi dedicarsi ad altra professione.
Purtroppo, però, costoro non faranno nulla di tutto ciò: costoro ignoreranno l'immagine e continueranno per la loro strada, fatta di bugie, traveggole e speculazioni pseudo-scientifiche a sfondo commerciale.MareKromiumNov 27, 2008
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PSP_010221_1420_RED_abrowse-01.jpgAeolian Features (EDM - False Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)59 visiteThis image is particularly interesting because of the occurrence of seasonal frost on the South-facing slopes (the image is relevant to the Southern Hemisphere, so South faces the Pole and gets little Winter light). This is particularly apparent in this natural colors view, as the frost forms pale, blue-grey-silver patterns. On the dunes, this highlights some of the regular patterns, as the frost forms only on parts of the ripples. The result is an intricately textured pattern of color.MareKromiumNov 27, 2008
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PSP_006005_2050_RED-00-PCF-LXTT.jpgStreamlined Island in Kasei Valles (Saturated Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)56 visiteIn this picture there is a Streamlined Island: one of many observed in the large outflow channels on Mars. This outflow channel is called Kasei Valles, and is one of the largest catastrophic outflow channels on Mars.
The Streamlined Island forms as water flows through the channel, but is blocked by some sort of obstacle, such as a crater or other topographic landform. In this HiRISE image, we only see the very tail end of the Streamlined Island, which is over 118 Km in length.
The platy surface within the channels has been attributed to either later lava or mud flows along the surface. The island itself is quite dusty and covered in small craters, so the island may be quite old. Along the edge of the island, however, you can see individual layers of rock.
These layers represent individual rock units that may be volcanic or sedimentary in origin.MareKromiumNov 27, 2008
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PSP_009706_2125_RED.jpgValley Network in Arabia Terra (Saturated and Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)59 visiteThe central portion of this image includes a portion of a Valley Network in Arabia Terra. In lower resolution images, this meander (a bend in a valley) appeared discontinuous - hence its selection as a target for HiRISE. However, at HiRISE resolution the valley is visible throughout its course.
This is a mid-latitude scene where ground ice is believed to be stable relatively near the surface today. The mottled terrain visible throughout the image could be a sublimation texture. Sublimation occurs when ice goes directly to the gas phase.
When this happens, the space beneath the subsurface that the ice previously occupied is now empty, allowing the remaining surface to collapse and form the observed texture.
Several of the craters in this scene have flattened appearances, which may have resulted from ice-rich material being driven by gravity into the crater centers.MareKromiumNov 27, 2008
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PSP-20081120_spirit.jpgSpirit from orbit57 visiteThe solar system's most celebrated team of off-planet drivers cheered when they heard the news. Spirit had phoned home from Mars, ending four days of silence. The team had kept the rover safe, with help from a friend named "Marci."
Spirit had survived a fierce and sudden dust storm that had driven solar power to all-time lows. Without being able to notify Earth, Spirit had followed instructions the team sent to protect the rover.
The team had received warning from scientists who keep tabs on Martian weather with MARCI -- short for Mars Color Imager. From orbit, the instrument showed thick, swirling dust clouds advancing from the west. Engineers responded with instructions to conserve energy. They told Spirit to turn off a heater and do only two things each day -- check battery power and dust in the atmosphere.
As directed, Spirit contacted Earth on Nov. 13, 2008. MareKromiumNov 22, 2008
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PSP_010169_2650_RED_abrowse-03~0.jpgDunes and other Surface Features in Chasma Boreale (edm n. 3 - false colors; credits: Lunexit)59 visiteAllora? Lo vedete il "possible North Polar drainage channel"? Notate come sia diverso dai soliti "cracks" e "fissures" del suolo? Osservatene bene i bordi e quindi provate a fare un confronto fra questo frame e qualche drainage channel Terrestre o di Titano: le somiglianze ci sono, e sono evidenti.
Verificare per credere!MareKromiumNov 20, 2008
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