Difference between revisions of "September 20, 2004"
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=Young Fractures?= | =Young Fractures?= | ||
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| − | + | <p align="center"><img src="archive/2004/09/images/LPOD-2004-09-20.jpeg" border="0"> | |
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| − | + | <td><div align="center" class="main_sm">Image Credit: [http://www.hq.nasa.gov/office/pao/History/SP-362/ch6.3.htm Apollo 17 Pan Camera AS17-2313]</p> | |
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| − | + | <p align="center"><b>Young Fractures?</b></p> | |
| − | + | <p align="left">Apollos 15 through 17 carried Panoramic Cameras which acquired thousands of photographs with resolutions up to 2 m. Some of these pictures show tiny details not seen elsewhere. Here is an example from the "Apollo Over the Moon: A View from Orbit" book. This image appears on [http://www.hq.nasa.gov/office/pao/History/SP-362/ch6.3.htm page 208] and is said to show a gash or fracture in the Littrow rilles on the eastern shore of Mare Serenitatis. Based on the scale bar given in the book, the area shown is 50 km wide. That is obviously in error (the craters have morphologies common in craters 100s of meters wide) - I would guess the picture width is only 1-2 km. In the book's figure caption, no origin is suggested for this gash, but its fresh appearance suggests it must be very young. This is clearly not a feature that formed when the lava surface did, so it is not a lava flow channel or rille. And most lunar fracturing - such as formed concentric and linear rilles - stopped by 3.6 billion years ago. From Apollo seismometers we have learned that the Moon continues to experience small moonquakes. And it has been suggested that some quakes are large enough to rupture the lunar surface. Perhaps this gash is an evidence for a continuing seismic hazard on the Moon! | |
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| − | + | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | |
<p align="left"><p><b>Technical Details:</b><br> | <p align="left"><p><b>Technical Details:</b><br> | ||
Lunar Orbiters 1, 2, [http://www.lpod.org/archive/2004/02/LPOD-2004-02-05.htm 3] and 5 also took a relatively limited number of high res images.</p> | Lunar Orbiters 1, 2, [http://www.lpod.org/archive/2004/02/LPOD-2004-02-05.htm 3] and 5 also took a relatively limited number of high res images.</p> | ||
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[http://www.hq.nasa.gov/office/pao/History/SP-362/cover.htm Apollo Over the Moon] | [http://www.hq.nasa.gov/office/pao/History/SP-362/cover.htm Apollo Over the Moon] | ||
<p align="left"><b>Tomorrow's LPOD: </b> Littrow Rilles - A Wider View </p> | <p align="left"><b>Tomorrow's LPOD: </b> Littrow Rilles - A Wider View </p> | ||
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| − | + | <td><hr></td> | |
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| − | + | <p align="center" class="main_titles"><b>Author & Editor:</b><br> | |
| − | + | [mailto:tychocrater@yahoo.com Charles A. Wood]</p> | |
| − | + | <p align="center" class="main_titles"><b>Technical Consultant:</b><br> | |
| − | + | [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p> | |
| − | + | <p align="center" class="main_titles"><b>Contacte al Traductor:</b><br> | |
| − | + | [mailto:pablolonnie@yahoo.com.mx" class="one Pablo Lonnie Pacheco Railey ]</p> | |
| − | + | <p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | |
| − | + | <p align="center" class="main_titles"><b>A service of:</b><br> | |
| − | + | [http://www.observingthesky.org/ ObservingTheSky.Org]</p> | |
| − | + | <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | |
| − | + | [http://antwrp.gsfc.nasa.gov/apod/astropix.html Astronomy] | [http://www.msss.com/ Mars] | [http://epod.usra.edu/ Earth]</p> | |
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===COMMENTS?=== | ===COMMENTS?=== | ||
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | ||
Revision as of 18:25, 4 January 2015
Young Fractures?
<img src="archive/2004/09/images/LPOD-2004-09-20.jpeg" border="0"> |
Image Credit: Apollo 17 Pan Camera AS17-2313
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Young Fractures? Apollos 15 through 17 carried Panoramic Cameras which acquired thousands of photographs with resolutions up to 2 m. Some of these pictures show tiny details not seen elsewhere. Here is an example from the "Apollo Over the Moon: A View from Orbit" book. This image appears on page 208 and is said to show a gash or fracture in the Littrow rilles on the eastern shore of Mare Serenitatis. Based on the scale bar given in the book, the area shown is 50 km wide. That is obviously in error (the craters have morphologies common in craters 100s of meters wide) - I would guess the picture width is only 1-2 km. In the book's figure caption, no origin is suggested for this gash, but its fresh appearance suggests it must be very young. This is clearly not a feature that formed when the lava surface did, so it is not a lava flow channel or rille. And most lunar fracturing - such as formed concentric and linear rilles - stopped by 3.6 billion years ago. From Apollo seismometers we have learned that the Moon continues to experience small moonquakes. And it has been suggested that some quakes are large enough to rupture the lunar surface. Perhaps this gash is an evidence for a continuing seismic hazard on the Moon! Technical Details: Related Links: Tomorrow's LPOD: Littrow Rilles - A Wider View |
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Author & Editor: Technical Consultant: Contacte al Traductor: A service of: |
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
