New Olympus Mons image, 6 km high scarp |
New Olympus Mons image, 6 km high scarp |
Mar 3 2006, 03:16 PM
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#1
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
http://www.esa.int/SPECIALS/Mars_Express/SEMIPVMVGJE_0.html - Eastern scarp of Olympus Mons (Press Information)
http://www.esa.int/SPECIALS/Mars_Express/SEMIPVMVGJE_1.html - Eastern scarp of Olympus Mons (Images) Image was taken on Nov. 23, 2004: Lava flows are up to 200 million years old and the network-bearing area was geologically active as recent as 30 million years ago. -------------------- - blue_scape / Nico -
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May 10 2006, 07:05 PM
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#2
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
Nice one, Doug - look at the cloud shadows! If the sun elevation is known the cloud height can be calculated.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 10 2006, 07:53 PM
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#3
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Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
Nice one, Doug - look at the cloud shadows! If the sun elevation is known the cloud height can be calculated. Well from plugging the average time given for the image (2004-11-23 16:11:22) Latitude (20.2913N) and longitude (-230.7915W) into mars 24 I get a Solar Elevation of 53.7deg and Solar Azimuth of 279.9deg if that's any help. |
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May 10 2006, 08:12 PM
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#4
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Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
Well from plugging the average time given for the image (2004-11-23 16:11:22) Latitude (20.2913N) and longitude (-230.7915W) into mars 24 I get a Solar Elevation of 53.7deg and Solar Azimuth of 279.9deg if that's any help. Hmmh - I measure about 62 pixels between the clouds and their shadows in the middle of the picture. According to the metadata the resolution is approx 90.9m/pixel. With the above solar elevation I get an altitude of around 7.67km above the surface (where the shadow is) for those clouds. |
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May 10 2006, 08:40 PM
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#5
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Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
Hmmh - I measure about 62 pixels between the clouds and their shadows in the middle of the picture. According to the metadata the resolution is approx 90.9m/pixel. With the above solar elevation I get an altitude of around 7.67km above the surface (where the shadow is) for those clouds. A quick and dirty look at the MOLA elevation data for this spot on Google Mars puts the area where the shadow is at somewhere around 3km above datum which puts these clouds 10km below the top of Olympus so they are possibly water clouds. |
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