| Risultati della ricerca nelle immagini - "Secondary" |
APOLLO 16 AS 16-4653.jpgAS 16-4653 - Secondary Craters' Clusters53 visiteThese 3 clusters of secondary craters (see arrows) are on the East flank of the larger crater Ptolemaeus near the center of the Moon's Near-Side. Each cluster has a ridged and hummocky appearance. The primary crater has not been identified in this case, but the configuration of the clusters tells us that it must be to the South of Ptolemaeus. Note that the South-facing side of each cluster is more sharply defined than the North-facing side.
This is a consequence of the oblique trajectory of impacting fragments that causes the ejecta of the secondary craters to be propelled away (down range) from the primary crater. Observations of manmade impact craters have shown that the individual fragments within a cluster of secondary debris strike the surface nearly simultaneously.
In the process, ejecta from one secondary collides and interferes with ejecta from adjacent craters, producing a ridged and hummocky surface.
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Channel-PSP_001342_1910_RED.jpgSecondary Craters' Field and a deep Channel111 visitenessun commentoMareKromium
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Craters-Secondary_Crater-Aonia_Terra-PCF-LXTT.jpgSecondary Crater in Aonia Terra (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga)60 visitenessun commentoMareKromium
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Craters-Secondary_Crater_Field-PCF-LXTT.jpgSecondary Crater Field (Slightly Saturated Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)83 visitenessun commentoMareKromium
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Craters-Secondary_Craters-20080428a.jpgMultiple Secondary Craters (Natural Colors; credits for the additonal process. and color.: Dr Paolo C. Fienga - Lunexit Team)103 visitenessun commentoMareKromium
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Craters-Secondary_Craters-ArabiaTerra-PIA08759-PCF-LXTT.jpgSeconday Craters in Arabia Terra Region (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)325 visitenessun commentoMareKromium
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Craters-Unnamed_Crater_Field_in_Ares_Vallis-MGS.JPGSecondary Craters' Field in Ares Vallis (Original NASA/MGS/MSSS b/w Frame)58 visiteOriginal caption:"This MGS-MOC image shows a Field of Secondary Craters located on the Plains located North of Ares Vallis, roughly 30 or 35 Km (such as about 19–22 miles) North-East of the Mars Pathfinder LS. These Craters did not form directly by individual meteor impacts: they resulted from the impact of material ejected from a much larger meteor impact that might have occurred somewhere to the South of the Region".
Nota: per i professionisti di Scienze Planetarie, suggeriamo di portare il frame sino al full-size e quindi esaminare, campionando, almeno 10/12 crateri secondari agendo sull'intera area ripresa. Noi lo abbiamo fatto e le forme che abbiamo individuate NON supportano - a nostro parere - la caption NASA. In particolare: se questa zona è effettivamente ricoperta da crateri secondari, allora dovremmo ipotizzare, dopo aver valutato le diverse angolazioni dei rilievi, che questi ejecta sono arrivati da almeno 2 (se non 3) impatti diversi e sensibilmente distanziati nel tempo.
L.N.: 19.9° N and 33,3° W
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Craters-Unnamed_Secondary_Crater-PIA04106.jpgPossible Secondary Crater (Original NASA/JPL/ASU b/w Frame)53 visitenessun commento
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Craters-Unnamed_Secondary_Crater-Terra_Cimmeria-PIA14980-PCF-LXTT.jpgPossible Secondary Crater in Terra Cimmeria (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia) 189 visiteOrbit Number: 43050
Latitude: 21,179° South
Longitude: 163,038° East
Instrument: VIS
Captured: August, 28, 2011
MareKromium
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ESP_019197_2290_RED_abrowse-04.jpgSecondary Crater (Absolute Natural Colors; credits for the additional process. and color.: Drr Gianluigi Barca and Paolo C. Fienga - Lunexit Team)103 visitenessun commentoMareKromium
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ESP_019197_2290_RED_abrowse-05.jpgSecondary Crater (EDM n.1 - additional process. by Drr Gianluigi Barca and Paolo C. Fienga - Lunexit Team)76 visitenessun commentoMareKromium
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ESP_019197_2290_RED_abrowse-06.jpgSecondary Crater (EDM n.2 - additional process. by Drr Gianluigi Barca and Paolo C. Fienga - Lunexit Team)85 visitenessun commentoMareKromium
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