IPB

Welcome Guest ( Log In | Register )

5 Pages V  « < 3 4 5  
Reply to this topicStart new topic
Ceres Geology
Hungry4info
post Dec 6 2017, 11:45 AM
Post #61


Senior Member
****

Group: Members
Posts: 1413
Joined: 26-July 08
Member No.: 4270



Describing what are obviously craters as "small conical hills" ... maybe this paper is a better fit for viXra.org instead.


--------------------
-- Hungry4info (Sirius_Alpha)
Go to the top of the page
 
+Quote Post
DFortes
post Dec 6 2017, 01:49 PM
Post #62


Junior Member
**

Group: Members
Posts: 41
Joined: 11-April 07
From: London, U.K.
Member No.: 1957



QUOTE (antipode @ Dec 6 2017, 06:31 AM) *
Is this a joke?

https://arxiv.org/ftp/arxiv/papers/1712/1712.01320.pdf

I get that its a preprint archive and all that, but....sheesh

P


This is great - perhaps one of the most endearingly mis-guided and unintentionally hilarious things I've seen in a while.
It actually has the line, "Those beauties are really in the eyes of a beholder." on page 4. Figure 39 nearly made me spit coffee over my keyboard.

But if you think that garbage only appears in arXiv, try this paper of dubious statistical quality, which I have to assume was peer reviewed by an actual human being...

https://www.nature.com/articles/s41598-017-13355-7
Go to the top of the page
 
+Quote Post
fredk
post Dec 7 2017, 12:01 AM
Post #63


Senior Member
****

Group: Members
Posts: 4245
Joined: 17-January 05
Member No.: 152



QUOTE (antipode @ Dec 6 2017, 07:31 AM) *
Is this a joke?

https://arxiv.org/ftp/arxiv/papers/1712/1712.01320.pdf

I get that its a preprint archive and all that, but....sheesh

I don't follow the earth and planetary subject area, but the main physics/astro/cosmo areas are extremely well controlled and a paper like this would not get through.

This author hasn't appeared on the arxiv before so would've needed endorsement, which I think is more or less automatic if you have an email address from a known institution. His email address is from the Nauchno-Issledovatel'skiy Fiziko-Khimicheskiy Institut Im. L. Ya. Karpova so that may have let him in easily. But that's a chemistry institute so it's unclear if he has any planetary science training.

The postings are also supposed to be moderated and he's clearly slipped through that net.
Go to the top of the page
 
+Quote Post
Gladstoner
post Dec 7 2017, 03:50 AM
Post #64


Member
***

Group: Members
Posts: 714
Joined: 3-January 08
Member No.: 3995



Well that was painful.
Go to the top of the page
 
+Quote Post
angel1801
post Dec 7 2017, 04:35 AM
Post #65


Member
***

Group: Members
Posts: 159
Joined: 4-March 06
Member No.: 694



I very rarely post anything here apart from me giving valuable money to keep this wonderful site alive and running.

Even former editors of peer reviewed journals have said that up to 40% of all stuff that appears in peer reviewed journals are either of very poor poor quality or even worse a lot of the medical science stuff that appears cannot be re-produced by future research or was constructed is such a way to make the re-production of prior results all but impossible.




--------------------
I call heaven and earth to witness against you this day, that I have set before thee life and death, the blessing and the curse; therefore choose life, that thou mayest live, thou and thy seed.

- Opening line from episode 13 of "Cosmos"
Go to the top of the page
 
+Quote Post
fredk
post Dec 7 2017, 08:22 PM
Post #66


Senior Member
****

Group: Members
Posts: 4245
Joined: 17-January 05
Member No.: 152



QUOTE (fredk @ Dec 7 2017, 01:01 AM) *
The postings are also supposed to be moderated and he's clearly slipped through that net.

I pointed this out and they agreed it was missed by the area moderators. The preprint has been bumped down from astro-ph.EP to the scrapheap - physics.gen-ph.
Go to the top of the page
 
+Quote Post
atomoid
post Dec 8 2017, 12:04 AM
Post #67


Member
***

Group: Members
Posts: 866
Joined: 15-March 05
From: Santa Cruz, CA
Member No.: 196



hilariously painful indeed! gave up trying to find a timestamp of April 1st, but seems like too much effort went into it to just be a joke..
had the same reaction to figure 39, it perfectly sums up the paper in its own succinct meme...
Attached Image
Go to the top of the page
 
+Quote Post
Explorer1
post Mar 15 2018, 02:36 AM
Post #68


Senior Member
****

Group: Members
Posts: 2073
Joined: 13-February 10
From: Ontario
Member No.: 5221



Newly published results showing quite a bit of activity on Ceres as it nears perihelion (next month). More ice in shadowed areas, and detection of calcium carbonate on Ahuna Mons: https://www.jpl.nasa.gov/news/news.php?feature=7081
Go to the top of the page
 
+Quote Post
nprev
post Mar 15 2018, 03:22 AM
Post #69


Merciless Robot
****

Group: Admin
Posts: 8783
Joined: 8-December 05
From: Los Angeles
Member No.: 602



Have to wonder if this is partially endogenic, though I can't think of a mechanism unless Ceres is somehow unusually rich in core radioactives. However, since these phenomena appear to coincide with perihelion, a more pertinent question is why Ceres looks so much like a rather ordinary rocky small body dominated by cratering given how fast-acting some of these processes may be.

Volatile deposits may be isolated and widely dispersed, the regolith may vary substantially in thickness, the thermal properties of surface and near-surface materials may vary, all or none of the above. A great many possibilities and questions spring to mind; be fun to see how the pros weigh in. smile.gif


--------------------
A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
Go to the top of the page
 
+Quote Post
JRehling
post Mar 15 2018, 04:44 PM
Post #70


Senior Member
****

Group: Members
Posts: 2530
Joined: 20-April 05
Member No.: 321



On Ahuna Mons, I wonder how intricate the dynamics of downslope mass movement might be. It seems to have been most recently "groomed" by downslope movement, which could mean one single 360° event or a few, or a more or less ongoing process. Perhaps impacts/quakes trigger new flows. And then what is exposed to the surface could be overturned depending on the structural mechanics, and what we see in vis/IR spectroscopy may be a superficial covering that isn't representative of the rest of the structure. This wouldn't require active endogenous geology, if impacts are triggering avalanches, though it doesn't exclude active geology, either.
Go to the top of the page
 
+Quote Post
antipode
post Aug 5 2018, 05:30 AM
Post #71


Member
***

Group: Members
Posts: 314
Joined: 1-October 06
Member No.: 1206



A Possible Brine Reservoir Beneath Occator Crater: Thermal and Compositional Evolution and Formation of the Cerealia Dome and Vinalia Faculae
[Abstract]

https://www.sciencedirect.com/science/artic...019103517306371

P
Go to the top of the page
 
+Quote Post
atomoid
post Jun 15 2019, 01:57 AM
Post #72


Member
***

Group: Members
Posts: 866
Joined: 15-March 05
From: Santa Cruz, CA
Member No.: 196



Ahuna Mons aka the Lonely Mountain is a plume-driven mud volcano.(three articles linked)


Go to the top of the page
 
+Quote Post
Marcin600
post Dec 28 2019, 07:46 PM
Post #73


Member
***

Group: Members
Posts: 432
Joined: 14-December 15
Member No.: 7860



Interesting relatively new (03 September 2019) article (pdf) in Journal of Geophysical Research: Duarte et al. „Landslides on Ceres: Diversity and Geologic Context” - open, with many pictures
Go to the top of the page
 
+Quote Post
Fran Ontanaya
post Aug 10 2020, 07:11 PM
Post #74


Member
***

Group: Members
Posts: 293
Joined: 22-September 08
From: Spain
Member No.: 4350



There's some new papers on Ceres

"Recent cryovolcanic activity at Occator crater on Ceres"
https://www.nature.com/articles/s41550-020-1146-8

"Evidence of non-uniform crust of Ceres from Dawn’s high-resolution gravity data"
https://www.nature.com/articles/s41550-020-1019-1
Go to the top of the page
 
+Quote Post
Webscientist
post Aug 11 2020, 08:39 PM
Post #75


Junior Member
**

Group: Members
Posts: 98
Joined: 30-November 05
From: Antibes, France
Member No.: 594



Excellent news regarding the salts of Occator Crater!!!
One may assume that for small planetary bodies like Ceres, the volatiles like H, O or H2O should have vanished into outer space over geologic time scales. But curiously, we see here what seems to be the remnant of a subsurface layer or pocket of a water-dominated liquid.
And no tidal forces engendered by a large planetary body...
Eager to see a rover in Occator Crater!
Go to the top of the page
 
+Quote Post

5 Pages V  « < 3 4 5
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 19th March 2024 - 10:41 AM
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.