Monday 19 March 2012 - Hadley Rille

[jules]

Continuing the rille theme from last week, Hadley Rille has been a bit of a forum feature this week. Forum regular kodemunkey sent me a interesting couple of NAC (Narrow Angle Camera) images he had come across while exploring a "wandering rille". Here they are:

M104504818LE

M144612571RE

He thought he might have spotted a volcanic vent but wasn't sure. This turned out to be the start of the Hadley Rille-Apennine region shown here on the ACT-REACT Quick Map.



We can now check the topography of any feature we see using the new ACT-REACT line tool to produce a map of surface elevation. The "vent-like" trench kodemunkey spotted on the  NAC images is Běla, an elongated crater thought to be either a collapsed magma chamber or a volcanic vent. Hadley Rille itself is thought to be a either a volcanic vent or a collapsed lava tube. There is more about the volcanic nature of the region in this LROC article Layers near Apollo 15 landing site. Using the ACT-REACT tool produced the following plot of Běla revealing a vent or tube -like "V" shaped dip in the terrain:



Newcomer to the forum Dynamo Duck asked if we could view the tracks around Hadley Rille from the Apollo 15 mission. Here is the location of the Apollo 15 landing site and a map of the various routes and tracks. Click on the images to enlarge.

From LROC article "Follow the Tracks"

From ACT-REACT

The latest batch of NACs taken from a lower orbit, 25-30 kilometres above the surface, show these tracks - but you need a keen eye. Here's what you are looking for:


NASA/GSFC/Arizona State University

The new NACS are now available to examine! Enjoy.

M175252641RE
M175252641LE

[Geoff]

Nice! Love the third image showing an overview of the rille. We need  to update placidstorm's ACT-REACT tutorial with the new surface elevation feature.

[placidstorm]

Still trying to figure it out. Can't seem to get anything to come up.    

[kodemunkey]

Looks like a cool new feature, i'll have to check it out

[placidstorm]

Well that bites . It crashed my puter in a very weird way and I now can't get Act out of the stone age. ie no layers on the left , at all . No new stuff on the top right . No matter what link I use to get there .  Grrr Argg

[Geoff]

Maybe you've caught my ACT-REACT bug 

[placidstorm]

Got it back but still get nuttin but errors . I fixin to go " fly fishin" with this bug !

[jules]

I hope you both get it fixed soon as it's a great tool - and there are lots of other additions too. Still working out what they do!

[placidstorm]

Can you send me the link your useing . I've go in through 3 diff. links and they all have diff. stages of act.

[placidstorm]

I have nothing under the search for button , or path query - select data source. I assume you do ?

[jules]

This is what I have. For some reason it always opens with the "LROC WAC color shaded relief" box ticked but that's not really a problem.

[placidstorm]

Mine has nothing under the search for button like yours . errrrrrrr

[jules]

 
But on the upside we made Portal to the Universe.

[Dynamo Duck]

Newcomer to the forum Dynamo Duck asked if we could view the tracks around Hadley Rille from the Apollo 15 mission. Here is the location of the Apollo 15 landing site and a map of the various routes and tracks. Click on the images to enlarge.

From LROC article "Follow the Tracks"

Thanks for that pic Jules. Have you got that same image without the white lines on it so we can see the actual tracks please?

Cheers. Ewan.[/td][/tr][/table]

[jules]

Thanks for that pic Jules. Have you got that same image without the white lines on it so we can see the actual tracks please?

Cheers. Ewan.

Unfortunately it's not  that easy. That image is "zoomed out" a fair bit to show the whole site and covers several NACs. If you have lots of time, very keen eyesight you should find tracks on the two NACs I link to. I did have a brief look and found some on one of them but they really are tricky to spot as the example (arrowed) pictures show. The tracks are so tiny and faint. Also the NACs are not in the orientation you might expect which complicates things slightly. They are there - which is the really amazing thing - but you have to dig!