Difference between revisions of "July 28, 2014"

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<em>image by [mailto:jocelyn.serot@free.fr" rel="nofollow Jocelyn Serot], France</em><br />
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<em>image by [mailto:jocelyn.serot@free.fr Jocelyn Serot], France</em><br />
 
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<td>Ten years ago I [http://www.lpod.org/archive/LPOD-2004-09-26.htm" rel="nofollow proposed] that a large comical hill south of the simple crater Gardner was a new type of feature, a <em>megadome</em> - a large volcanic mountain that even had a summit depression, perhaps a caldera. Now, thanks to the ease of making topographic transects with QuickMap we can quantify that interpretation. This cross-section goes from the upper left of the megadome diagonally towards the mid-right side, passing through the summit caldera. The mountain is about 100 km across and nearly 1.4 km high. This cross-section suggests a steep mountain but the vertical exaggeration is about 100 to 1, so this a gentle dome. The central depression is about 13 km wide, and it is roughly 150 m deep. In fact, it looks likely that there are at least two calderas, the center one just measured and another one to the north with a well-defined curved eastern rim. If this truly is a volcanic mountain, it is probably a large ["https://lpod.wikispaces.com/January+28%2C+2011" shield] volcano, comparable in width to the island of Hawaii.<br />
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<td>Ten years ago I [http://www.lpod.org/archive/LPOD-2004-09-26.htm proposed] that a large comical hill south of the simple crater Gardner was a new type of feature, a <em>megadome</em> - a large volcanic mountain that even had a summit depression, perhaps a caldera. Now, thanks to the ease of making topographic transects with QuickMap we can quantify that interpretation. This cross-section goes from the upper left of the megadome diagonally towards the mid-right side, passing through the summit caldera. The mountain is about 100 km across and nearly 1.4 km high. This cross-section suggests a steep mountain but the vertical exaggeration is about 100 to 1, so this a gentle dome. The central depression is about 13 km wide, and it is roughly 150 m deep. In fact, it looks likely that there are at least two calderas, the center one just measured and another one to the north with a well-defined curved eastern rim. If this truly is a volcanic mountain, it is probably a large [https://www2.lpod.org/wiki/January_28,_2011 shield] volcano, comparable in width to the island of Hawaii.<br />
 
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<em>[mailto:tychocrater@yahoo.com" rel="nofollow Chuck Wood]</em><br />
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br />
 
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<strong>Technical Details</strong><br />
 
<strong>Technical Details</strong><br />
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<strong>Related Links</strong><br />
 
<strong>Related Links</strong><br />
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<em>[http://lpod.wikispaces.com/21st+Century+Atlas+of+the+Moon 21st Century Atlas]</em> chart 8.<br />
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<em>[[21st Century Atlas of the Moon|21st Century Atlas]]</em> chart 8.<br />
 
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<p><b>Yesterday's LPOD:</b> [[July 27, 2014|A Tortured Terrain]] </p>
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<p><b>Tomorrow's LPOD:</b> [[July 29, 2014|Airy Swirl]] </p>
 
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Latest revision as of 07:29, 28 October 2018

Quantified Mountain

LPOD-Jul28-14.jpg
image by Jocelyn Serot, France

LPOD2.jpg
 Ten years ago I proposed that a large comical hill south of the simple crater Gardner was a new type of feature, a megadome - a large volcanic mountain that even had a summit depression, perhaps a caldera. Now, thanks to the ease of making topographic transects with QuickMap we can quantify that interpretation. This cross-section goes from the upper left of the megadome diagonally towards the mid-right side, passing through the summit caldera. The mountain is about 100 km across and nearly 1.4 km high. This cross-section suggests a steep mountain but the vertical exaggeration is about 100 to 1, so this a gentle dome. The central depression is about 13 km wide, and it is roughly 150 m deep. In fact, it looks likely that there are at least two calderas, the center one just measured and another one to the north with a well-defined curved eastern rim. If this truly is a volcanic mountain, it is probably a large shield volcano, comparable in width to the island of Hawaii.


Chuck Wood

Technical Details
C11 @ f/d=20, ADC, R filter, Basler 1300 camera. Processing : AS!2 + RS6.

Related Links
21st Century Atlas chart 8.


Yesterday's LPOD: A Tortured Terrain

Tomorrow's LPOD: Airy Swirl

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