A Tribute To Mars Global Surveyor
|
|
|
Volcanic_Features-Collapse_Pits-Pavonis_Mons_Area.jpgPit Chain on the Eastern Flank of Pavonis Mons (Original NASA/MGS/MSSS b/w Frame)79 visiteCaption NASA originale:"Pavonis Mons is the middle of the 3 large Tharsis Montes Volcanoes in the Martian Western Hemisphere.
Located on the Equator at about 113° West Longitude, Pavonis Mons stands as much as 7 Km above the surrounding Plain. The MGS-MOC recently spied the above Chain of Elliptical Pits on the lower East Flank of Pavonis Mons. The picture covers an area approx. 3 Km wide by 3,4 Km in length. The Pits are aligned down the center of a 485 meters-(approx. 530 yards)-wide, shallow Trough.
The straight Trough and the Pits were both formed by collapse associated with faulting. The Scarp on each side of the Trough is a "Fault Line" - Troughs of this type are known to geologists as "Graben". Such features are typically formed when the ground is being moved apart by tectonic forces, or when the ground is uplifted by molten rock injected into the near sub-surface from deeper underground. Both processes may be contributing to the features seen on Pavonis Mons. The Pits follow the trend of these Faults, and indicate the locus of collapse".
|
|
Volcanic_Features-Fissure-Tharsis_Region-M0806311Det.jpgMartian "Freeway" in Tharsis Region (Original NASA/MGS/MSSS b/w Frame)53 visiteUn'autostrada Marziana (come ci piacerebbe pensare...) o un gigantesco e lunghissimo crack che attraversa la suggestiva regione dove sorgono i vulcani Ascraeus e Pavonis Montes?
Uno splendido fotogramma MGS-MOC che ci mostra l'antico letto di un fiume Marziano o, più probabilmente, il risultato di un grande evento sismico occorso in ere remote. Non possediamo informazioni al riguardo ma potrebbe anche darsi che questo grande canale sia stato disegnato, in prima battuta, da un sisma e poi sia stato "perfezionato", nella sua struttura di dettaglio, da qualche altro evento vulcanico (la Regione è quella giusta...). Le solite dune che appaiono in qualche sua sezione ci fanno anche considerare l'ipotesi che questa gola, un tempo e solo in qualche suo punto preciso, sia anche stata invasa dalle acque.
|
|
Volcanic_Features-Lava_Flows-Olympus_Mons-MGS-PCF-LXTT.jpgOlympus' Lava Flows (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)421 visitenessun commentoMareKromium
|
|
Volcanic_Features-Lava_or_Mud_Flows-00.jpgControversial Features of Zephyria Planum (Original NASA/MGS/MSSS b/w Frame)54 visiteOriginal caption:"This MGS-MOC image shows a portion of a shallow Channel carved in the Plains of the Zephyria Region of Mars. This feature might be the result of the passing of either extremely fluid Lava or, perhaps, Mud".
Location near: 5,1° North Lat. and 203,7° West Long.
Image width: ~3 Km (~1.9 mi)
Season: Northern Winter
|
|
Volcanic_Features-Lava_or_Mud_Flows-01.jpgControversial Features of Zephyria Planum (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)112 visiteOriginal caption:"This MGS-MOC image shows a portion of a shallow Channel carved in the Plains of the Zephyria Region of Mars. This feature might be the result of the passing of either extremely fluid Lava or, perhaps, Mud".
Location near: 5,1° North Lat. and 203,7° West Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern WinterMareKromium
|
|
Volcanic_Features-Pits-A.jpgUnusually-looking Collapse Pits (Original NASA/MGS/MSSS b/w CTX Frame)53 visiteLocation near: 22,1° North Lat. and 53,2° East Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern Spring
Resolution: 18 mt/pixel
|
|
Volcanic_Features-Pits-Ascraeus_Mons-PIA07313-01.jpgAscraeus Mons' Pit Chain (EDM/HD - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)119 visiteCaption NASA originale:"This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows Collapse Pits on the Northern Flank of the giant Tharsis Shield-Volcano, Ascraeus Mons. Details in Rock and Dust are seen when this image is examined at its full, 1,5 meters (5 ft) per pixel resolution. Large, dark Boulders occur on the Floors of some of the Pits, for example. This scene is located near 13,1° North Lat. and 103,1° West Long. The picture covers an area of about 3 Km (such as approx. 1,9 mi) wide".
|
|
Volcanic_Features-Pits-Ascraeus_Mons-PIA07313-02.jpgAscraeus Mons' Pit Chain (EDM/HD - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)188 visitenessun commentoMareKromium
|
|
Volcanic_Features-Pits-Ascraeus_Mons-PIA07313-03.jpgAscraeus Mons' Pit Chain (Original HD NASA/MGS/MSSS b/w Frame)116 visitenessun commento
|
|
Volcanic_Features-Pits-Ascraeus_Mons-PIA07313-04.jpgAscraeus Mons' Pit Chain (EDM/HD - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)190 visitenessun commentoMareKromium
|
|
Volcanic_Features-Pits-PIA03196.jpgAscraeus Mons (possible Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commentoMareKromium
|
|
Volcanic_Features-Plume-Tharsis-PIA04285.jpgAn isolated "Water Ice Cloud" over Tharsis or a volcanic "Plume"? (Saturated Natural Colors; credits: NASA/JPL/MSSS)133 visiteOriginal caption:"This composite of red and blue MGS-MOC daily global images acquired on 6 July 2005 shows an isolated water ice cloud extending more than 30 Km (more than 18 miles) above the Martian surface. Clouds such as this are common in late Spring over the terrain located South-West of the Arsia Mons volcano. Arsia Mons is the dark, oval feature near the limb, just to the left of the "T" (in the "Tharsis Montes" label).
The dark, nearly circular feature above the "S" (in "Tharsis") is the Pavonis Mons Volcano and the other dark circular feature, above and to the right of "S" in "Montes," is Ascraeus Mons.
Illumination is from the left/lower left.
Season: Northern Autumn/Southern Spring".
Nota: purtroppo non ci sono vulcanologi nel Gruppo Lunar Explorer, ma la sensazione (nulla di più) che la "isolata nuvola di ghiaccio d'acqua", come la chiama la NASA sia, in realtà, il residuo di un evento vulcanico, è molto intensa (confrontate la sua forma con qualcuna delle "volcanic plumes" di Io...).
|
|
| 512 immagini su 43 pagina(e) |
 |
|
|
|
|
|
|
40 | |
|
|
