IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
Gusev terrain, some data from CRISM and HiRISE
Geert
post Mar 25 2009, 10:11 AM
Post #1


Member
***

Group: Members
Posts: 236
Joined: 5-June 08
From: Udon Thani
Member No.: 4185



Computer generated terrain clasification based on HiRISE for area north and south of Columbia hills. Colors mark areas which have the same average grid brightness and the same variance. The colors in themselves have no meaning, they are just used to show the different terrains.

Attached Image

Attached Image


Both images are at 16 mtr / pixel map aligned.
Go to the top of the page
 
+Quote Post
Geert
post Mar 25 2009, 10:24 AM
Post #2


Member
***

Group: Members
Posts: 236
Joined: 5-June 08
From: Udon Thani
Member No.: 4185



Attached Image


Distribution of Iron and Ferric minerals as measured by CRISM (average of all available CRISM data). Colors note area's which have the same quantities of iron and ferric minerals, the colors in themselves are meaningless and only used to show the various area's.

Note more or less the same terrain shows up as in above post from HiRISE data.

Attached Image


Same map for distribution of mafic minerals (pyroxenes) as measured by CRISM.

Once again note that in this presentation the colors do not show whether there is more or less of a certain mineral, they only show the area's which have the same distribution of measured minerals.
Go to the top of the page
 
+Quote Post
Geert
post Mar 25 2009, 10:37 AM
Post #3


Member
***

Group: Members
Posts: 236
Joined: 5-June 08
From: Udon Thani
Member No.: 4185



Attached Image


Distribution of Iron and Ferric minerals in homeplate area at 4 mtr/pixel

Go to the top of the page
 
+Quote Post
Geert
post Mar 25 2009, 10:46 AM
Post #4


Member
***

Group: Members
Posts: 236
Joined: 5-June 08
From: Udon Thani
Member No.: 4185



Attached Image


Distribution of mafic minerals (mainly pyroxenes) in the homeplate area, based on raw crism data.

Note as in all above images, colors note only area's which have the same distribution of minerals, they don't say anything about whether there are high of low quantities measured.
Go to the top of the page
 
+Quote Post
Geert
post Mar 25 2009, 10:55 AM
Post #5


Member
***

Group: Members
Posts: 236
Joined: 5-June 08
From: Udon Thani
Member No.: 4185



Attached Image


Bonneville crater showing computer terrain qualification based on average grid brightness and variance per grid.

Terrain colors are consistent with overview I posted in first message.
Go to the top of the page
 
+Quote Post
Geert
post Mar 25 2009, 11:02 AM
Post #6


Member
***

Group: Members
Posts: 236
Joined: 5-June 08
From: Udon Thani
Member No.: 4185



Attached Image


Unnamed crater at aprox 14.752 S and 175.572E showing computer generated terrain classification. Note colors are consistent with earlier messages, difference with Bonneville crater shown above is very clear.
Go to the top of the page
 
+Quote Post
PaulM
post Mar 26 2009, 12:28 PM
Post #7


Member
***

Group: Members
Posts: 206
Joined: 15-August 07
From: Shrewsbury, Shropshire
Member No.: 3233



Gusev crater once most likely contained a lake. The main reason for the selection of Gusev as a MER landing site was to look for lake deposits. Does the CRISM data for Gusev crater or for the large overflow channel to the South East of Gusev crater show evidence of lake or river deposits?
Go to the top of the page
 
+Quote Post
Phil Stooke
post Mar 26 2009, 08:09 PM
Post #8


Solar System Cartographer
****

Group: Members
Posts: 10127
Joined: 5-April 05
From: Canada
Member No.: 227



A mud flow might be a better description... doesn't seem to be much evidence for actual standing water. I don't know about compositional data (clays etc.) that might add to that.

But - there is an amazing geologic map of the Columbia Hills and Inner Basin area including Home Plate, by Larry Crumpler, in the poster session here at LPSC. I'm drooling - I hope it gets published or distributed as a big PDF at some point. It's a combination of HiRISE data and Spirit's observations.

Phil


--------------------
... because the Solar System ain't gonna map itself.

Also to be found posting similar content on https://mastodon.social/@PhilStooke
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
RobertEB
post Sep 24 2009, 02:00 PM
Post #9


Junior Member
**

Group: Members
Posts: 57
Joined: 17-May 06
From: Houston, Texas
Member No.: 776



If Home Plate is supposed to be a fumarole, could Pitchers Mound be a volcanic cone?



--------------------
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 28th March 2024 - 06:47 PM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.