Huge rocks at Mons Hansteen |
Huge rocks at Mons Hansteen |
Jul 4 2013, 08:27 AM
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#1
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Member Group: Members Posts: 238 Joined: 15-January 13 Member No.: 6842 |
Greetings. What is your opinion on the origin of big rocks that are visible at this location at Mons Hansteen (also known as the "Arrowhead"). One of the rocks casts a particularly long shadow.
Could they be volcanic plugs, or simply hard rocks exposed through erosion? Would love to hear your take on this. Thanks. -------------------- Curiosity rover panoramas: http://www.facebook.com/CuriosityRoverPanoramas
My Photosynth panoramas: http://photosynth.net/userprofilepage.aspx...;content=Synths |
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Jul 6 2013, 10:54 PM
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#2
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
without knowing the exact time the image was taken for that lat / long
And the exact pixel resolution < PPM> or <PPD> knowing the exact position of the sun above the horizon for the location i can not calculate the Height If the Sun is right ON the horizon then they might be rather small . |
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Jul 6 2013, 11:56 PM
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#3
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Member Group: Members Posts: 238 Joined: 15-January 13 Member No.: 6842 |
without knowing the exact time the image was taken for that lat / long And the exact pixel resolution < PPM> or <PPD> knowing the exact position of the sun above the horizon for the location i can not calculate the Height If the Sun is right ON the horizon then they might be rather small . I believe you can find those details when looking at the individual NAC strips, such as http://wms.lroc.asu.edu/lroc/view_lroc/LRO....0/M181494651LC or http://wms.lroc.asu.edu/lroc/view_lroc/LRO....0/M166182355RC But the problem with using shadow length in calculations is that it's falling downhill, therefore being longer than if it were on flat ground. -------------------- Curiosity rover panoramas: http://www.facebook.com/CuriosityRoverPanoramas
My Photosynth panoramas: http://photosynth.net/userprofilepage.aspx...;content=Synths |
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