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SOL830.jpgSoil's Texture - Sol 830 (Superdefinition + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)58 visitenessun commentoMareKromium
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PSP_006284_1145_RED_abrowse-00.jpgLarge Dunefield inside Smith Crater (MULTISPECTRUM; credits: Lunexit)58 visiteThis image shows a Dark Dunefield in Smith Crater. The dark color of the dunes indicates that they are probably made of basaltic sand, a dark volcanic rock that is common on Mars. This is in contrast to dunes on Earth, which are dominated by quartz, a rare mineral on Mars.
The dunes here are “transverse dunes” that, based on analogy with similar features on Earth, form by winds that blow in a direction perpendicular to the crests. However, Secondary ripples on top of the dunes are oriented at right angles; that indicates a second wind regime that has redistributed the sand after the original dunes formed. The multiple orientations of the dunes may be partly caused by their location within the crater, whose own topography can act to redistribute regional wind patterns.
The dark streaks on the lighter terrain outside of the Dunefield are interpreted as DD tracks, where mini-tornadoes reveal darker ground beneath the bright dust of the surface.
Some long DD Tracks are visible in the southern part of the dune field and climb onto the troughs of the transverse dunes. There are also a few faded tracks at the northern part of the dune field.MareKromium
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PSP_007481_1560_RED_abrowse.jpgProposed MSL Landing Site in Eberswalde Crater (MULTISPECTRUM; credits: Lunexit)58 visiteThis image covers a portion of Eberswalde Crater, which has an ancient deltaic depositional setting. Eberswalde is an approx. 65 Km diameter, closed basin crater. This image was targeted in the landing ellipse as a possible site for the 2009 Mars Science Laboratory Mission. The image shows resistant mounds and knobs as well as a scoured surface.
The CRISM instrument on board the Mars Reconnaissance Orbiter has detected Phyllosilicates (clays) in the bright layers in the crater. One of the ways clays form on Earth is when water erodes rock and makes fine particles which settle out of water; this often occurs in river deltas and lake beds.
The delta and meandering channels in Eberswalde Crater (to the West of the Landing Ellipse) and the detection of Phyllosilicates provides evidence for possible persistent aqueous activity on Mars.MareKromium
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001-Mars.jpgMars, according to Schiaparelli58 visiteDal nostro Amico Roberto Tremolada, una bellissima (e "datata"!) Mappa del Pianeta Rosso realizzata dal Grande Schiaparelli.
E quindi, se volete VEDERE e SAPERE di più, Vi invitiamo a consultare la Sezione a Lui dedicata - ed intitolata "Per Ricordare" - dal bellissimo Sito Lunar Explorer Italia (Sez. Liguria e Piemonte), curato dal nostro Grandissimo Amico e Collega, il Dr Gianluigi Barca.
Vi basterà andare su http://www.lunarexplorer.it/, Sez. "Storia", sub-Sezione "Per Ricordare" e poi...Buona Lettura!MareKromium
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SOL494.jpgBeehive-like Surface or an exposed "Interspace"? - Sol 494 (Superdefinition + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)58 visitenessun commentoMareKromium
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SOL354-2.jpgSearching for "Green"... - Sol 354 (2 - Superdefinition + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)58 visitenessun commentoMareKromium
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SOL354-1.jpgSearching for "Green"... - Sol 354 (1 - Superdefinition; credits: Dr G. Barca)58 visiteUn intrigante dettaglio extra-magnificato e Superdefinito (nel frame 1) e quindi ulteriormente processato MULTISPECTRUM (frame 2).
Differenze ---> la luminosità e la texture del frame
Analogie ---> una su tutte: la persistenza del colore "verde"
Per i più attenti: provate ad identificare e qualificare i micro-agglomerati di pseudo-polveri che caratterizzano questo frame e quindi, supponendo che NON si tratti di polveri, cercate di ipotizzarne la reale Natura, fornendo elementi di supporto alle Vostre asserzioni.
Buon Lavoro!MareKromium
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SOL736-1.jpgCoral Crown? - Sol 736 (Superdefinition; credits: Dr M. Faccin)58 visitenessun commentoMareKromium
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SOL750.jpgGreenish "dust"? - Sol 750 (Superdefinition + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)58 visitenessun commentoMareKromium
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SOL747.jpgGreenish "dust"? - Sol 747 (Superdefinition + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)58 visitenessun commentoMareKromium
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SOL1521-2N261393373EDNAY00P1550L0M1.jpgThe "Cold" Sun of Mars... - Sol 1521 (MULTISPECTRUM; credits: Lunexit)58 visitenessun commentoMareKromium
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SOL761-2.jpgGreenish "dust"? - Sol 761 (Superdefinition + MULTISPECTRUM; credits: Dr G. Barca & Lunexit)58 visitenessun commentoMareKromium
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