January 19, 2008

From LPOD
Revision as of 15:06, 24 December 2014 by Api (talk | contribs)
Jump to: navigation, search

Terminator Surfing the Swells of Mare Serenitatis

<a name="x-TERMINATOR SURFING THE SWELLS OF MARE SERENITATIS"></a>TERMINATOR SURFING THE SWELLS OF MARE SERENITATIS

<img src="/file/view/Jan14-O7MoonJHP8-12LPOD.jpg/34892207/Jan14-O7MoonJHP8-12LPOD.jpg" alt="Jan14-O7MoonJHP8-12LPOD.jpg" title="Jan14-O7MoonJHP8-12LPOD.jpg" />
image by <a class="wiki_link_ext" href="mailto:thefamily90@hotmail.com" rel="nofollow">Jim Phillips</a>

Jim Phillips often images close to the terminator, looking for domes and other features made visible by the grazing illumination. This view shows the low relief Valentine Dome (diameter of 35 km) of western Mare Serenitatis. In the right image I have mercilessly enhanced the original (with Photoshop unsharp mask) to bring out giant <a class="wiki_link_ext" href="http://www.lpod.org/archive/LPOD-2005-02-14.htm" rel="nofollow">swells</a> even more subtle than the Valentine Dome (1). Swell 2 is somewhat larger in diameter than the Dome, has a crisp boundary with the surrounding mare, but less steep slopes. In the enhanced view a curved line crosses the surface of 2, and a magnificent <a class="wiki_link_ext" href="http://www.lpod.org/?m=20070703" rel="nofollow">Apollo 15</a> image reveals that the line is a rille. With the benefit of Jim's view we can see on the Apollo 15 image that the rille is mostly contained within the swell, as is, to a lesser degree, the rille that cuts the Dome. The swell 2 rille probably formed by cracking of the mare surface that was uplifted to form the swell. And the uplift probably resulted from the rise of a batch of magma, that didn't erupt onto the surface. Swells 3, 4 and 5 are similar to 2, but less well-defined. Jim's image helps explain another mystery - why is there a fault on the mare to the east of the Valentine Dome? The very high resolution Apollo image clearly shows the fault, but doesn't hint at the small swell that the fault is mostly limited to. In this case the uplift resulted in a vertical rupture of the surface rather than a horizontal one as at swell 2. One final feature of interest. Between 1 and 5 is a delicate and narrow curved dimple that extends toward the south about 80 km. The mare surface appears more highly textured to the left, and smoother to right of the dimple line - is this a boundary between two lava flows?

Chuck Wood

Technical Details
Jan. 14, 2008. TMB 8" F/9 @ F/27

Related Links
Rükl plate 13
<a class="wiki_link_ext" href="http://www.lpod.org/archive/LPOD-2004-08-13.htm" rel="nofollow">More Valentines</a>

Note: You can leave comments about this LPOD by clicking on the"Discussion" tab above. 

 <iframe id="target_editor" name="target_editor" src="/s/blank.html" style="width:0px;height:0px;border:0"></iframe>
<form action="/page/edit/January+19%2C+2008" method="post" class="editorForm" id="editorForm"><input type="hidden" name="wikispacesFormToken" value="8aefbabcc748d9925cd0591b8ba6a4065274434e"/>
<input type="text" class="form-control" name="wikispaces_user_id" value="user-1418494093"/>
<input type="text" class="form-control" name="goto" autocomplete = "off"/>
<input type="text" class="form-control" name="mode" autocomplete = "off"/>
<input type="text" class="form-control" name="version" autocomplete = "off"/>
<input type="text" class="form-control" name="pageComments" autocomplete = "off"/>
<input type="text" class="form-control" name="saveAndContinue" autocomplete = "off"/>
<input type="text" class="form-control" name="comment" autocomplete = "off"/>
<input type="text" class="form-control" name="commentsDisabled" autocomplete = "off"/>
<input type="text" class="form-control" name="contentPresent" autocomplete = "off"/>
<input type="text" class="form-control" name="editorCleanup" autocomplete = "off"/>
<input type="text" class="form-control" name="WikispacesEditorContent" autocomplete = "off"/>
<input type="hidden" name="wikispacesASFormToken" value="d51ffd84b22e9b5f85e49361a93270e61ff7675c"/> 
   <input type="hidden" title="goto" name="e6818cf525dd0c41a39f4052bcd74bcb6bc409e7" value=""/>
   <input type="hidden" title="mode" name="39f373cb38f24830efba8512e5c1d04d74cbcbbf" autocomplete="off" value="visual"/>
   <input type="hidden" title="version" name="0bd1c45ea564ff2811b240656f8a592023ab7297" autocomplete="off" value="27596509"/>
   <input type="hidden" title="pageComments" name="c98edcf079b5a6179b075df790bc8e5592e6d3b8" autocomplete="off" value=""/>
   <input type="hidden" title="saveAndContinue" name="e42247edc8bcbe5c7f96df39798eca0efedb9455" value="0"/>
   <input type="hidden" title="comment" name="15053dea61c6a347c90c7bee9ca495a6b7c8e6e2" value=""/>
   <input type="hidden" title="commentsDisabled" name="0a451d0a8ea7a16bf69f7acc96684b924b807626" autocomplete="off" value=""/>
   <input type="hidden" title="contentPresent" name="ed3c4393bd1504bacb4ebc170b82d2534628762c" autocomplete="off" value=""/>
   <input type="hidden" title="editorCleanup" name="05efd09d9729fe87d33da27d1ebb666474aae59d" autocomplete="off" value=""/>

   <textarea id="wsMainEditor" title="content" class="noContentHide" name="57d35c6f8e47c4999240dce86bc9b1100bd2b07e" style="width: 100%; position: absolute; top: -50000px; left: -50000px;" autocomplete="off"></textarea>

 <noscript>

Javascript Required

You need to enable Javascript in your browser to edit pages.

 </noscript>

 </form>



</main> 

       <footer class="ws-theme-footer" role="contentinfo">

" rel="nofollow" class="js-help-trigger Help · About · " target="_new Blog · " rel="nofollow Pricing · " rel="nofollow Privacy · " rel="nofollow Terms · " rel="nofollow Support · [/space/subscribe/upgrade Upgrade]

Contributions to http://lpod.wikispaces.com/ are licensed under a <a rel="license" href="http://www.creativecommons.org/licenses/by-nc-nd/3.0">Creative Commons Attribution No-Derivative-Works Non-Commercial 3.0 License</a>. <a rel="license" href="http://www.creativecommons.org/licenses/by-nc-nd/3.0"><img src="by-nc-nd_3.0_80x15.png" width="85" height="15" alt="Creative Commons Attribution No-Derivative-Works Non-Commercial 3.0 License"/></a>
Portions not contributed by visitors are Copyright 2014 Tangient LLC
       </footer>


<script src="http://www.wikispaces.com/s/nogz/z9x3z494-editorc.min.js" type="text/javascript"></script> <script type="text/javascript"> </script>

</body> </html>

COMMENTS?

Click on this icon File:PostIcon.jpg at the upper right to post a comment.

Retrieved from "https://www2.lpod.org/index.php?title=January_19,_2008&oldid=96"