Defrosting South Polar Region (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)

Original caption:"This MGS-MOC image shows varied springtime patterns formed in defrosting, seasonal carbon dioxide frost in the South Polar Region of Mars. The feature sporting an outline of dark spots and an interior of smaller, closely-spaced dark spots and dark-outlined polygons is a patch of windblown or wind-eroded sand that was covered by carbon dioxide frost during the previous autumn and winter. The fainter, larger polygon pattern on either side of the patch of defrosting sand is formed in the substrate upon which the sand patch is sitting. Polygonal forms such as these might indicate the presence of ice below the surface".

Location near: 79,6°S; 125,0°W
Image width: width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Spring

Informazioni sul file
Nome del file:	South_Polar_Regions-PIA04162.jpg
Nome album:	MareKromium / A Tribute To Mars Global Surveyor
Valutazione (4 voti):	(Mostra dettagli)
Parole chiave:	Mars / from / orbit / - / South / Polar / Regions / - / Defrosting / Surface / Features
Copyright:	NASA - Mars Global Surveyor Project and Paolo C. Fienga/Lunexit Team for the add. process. and color.
Dimensione del file:	438 KiB
Data di inserimento:	Nov 24, 2010
Dimensioni:	2912 x 1241 pixels
Visualizzato:	118 volte
URL:	https://www.lunexit.it/gallery/displayimage.php?pid=27896
Preferiti:	Aggiungi ai preferiti

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george_p

[Nov 28, 2010 at 09:23 AM]

Molto Suggestivo, mi sembra di capire che il ghiaccio ricopra parzialmente la superficie.

MareKromium

[Nov 28, 2010 at 12:03 PM]

Grazie Giorgio. La stratigrafia corretta dovrebbe essere questa: prima la polvere, poi uno strato di ghiaccio (d'acqua o di CO2), ora pi� spesso ed ora pi� sottile, poi la superficie, poi la sub-superficie. Un abbraccio e buona domenica! paolo

Commento 1 a 2 di 2

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