Planet Four Talk
I'd say a fan
A tough image to classify,I think the darker patches are 3 fans
The scorched material is what we want you to map with the drawing tools. Cheers, ~Meg
No fans and blotches in this images. Looks to features that look wind carved
More likely rock with some dust about - many of the images have a translucent ice sheet on top.
Some lovely spiders
Lots of blotches in this image - so definitely lots of seasonal carbon dioxide jet activity.
that's the same tutorial image that's been in place since the start of the project. Does it look different for others?
it's a darker images, but the very dark features are seasonal fans and blotches that I wold mark. It's a tougher image than usual.
It does kinda look like holes in the nice, but those dark patches are the seasonal fans and blotches that we'd like you to mark
You can put a hashtag on talk #spiders This project is only focusing on the fans, but Planet Four: Terrains focuses on the spiders
Please do your best to mark all of these. It's important for understanding the process that formed them. Thanks!
The blue we think is frost or the fan particles sinking into the ice and changing the ice properties
the green is where we're missing data from the other two filters. Some glitch in the camera.
lots of blue frost
In this image, the shading doesn't matter much. Mars has lots of color variation, just like Earth. So not unexpected. hope this helps
Those are spider channels. More details here https://www.planetfour.org/#/about
Please mark the sources as best you can. Marking all of them helps us identify wind directions and surface area covered by the fans. Thanks
That's one of the things we want to answer by mapping all the fans and blotches
This one can be hard, but use your best judgement if you think you see fans and blotches to mark.
We see this pretty frequently as the ice layer gets thinner in the summer.
Likely a hot pixel on the camera
You can learn more about these features on our about page https://www.planetfour.org/#/about
This a tougher image, but in case this dark streaks are fans not shadows.
They are dust and dirt on top of an ice sheet. More details can be found here at https://www.planetfour.org/#/about
Likely a bad pixel on the detector.
We think the fans are blown by the wind, so likely the wind over this area was all in the same direction.
that's probably a bit of carbon dioxide frost.
could be carbon dioxide frost or bad pixels
Yep. likely carbon dioxide frost
Yes, more like frost by similar thing. Likely a bit of left over carbon dioxide frost now visible
They do like 'spider veins'. Those channels have been nicknamed 'spiders'. More details at https://www.planetfour.org/#/about
I would say mostly shadows and a few faint fans
those are the seasonal fans and blotches we're asking people to map with the fan and blotch tool
Very likely carbon dioxide frost.
I'd go with blotches.
Some lovely blotches here
this is tough one. I think there might be one blotch in the image, but this is tougher than most images we shown on the site
I would say there are no fans or blotches in this image
Yep. That's exactly what we're after with your classifications. ˇhanks for the help
They're carved by carbon dioxide geysers. more details at https://www.planetfour.org/#/about
Not methane. Details about the process can be found on our about page https://www.planetfour.org/#/about
yes, I would say there no fans or blotches in this image as well.
such a beautiful image - looks like lots of frost too
Something like that happened we think. More details at https://www.planetfour.org/#/about
definitely fans or blotches. I'd probably mark these as fans.
Looks like a seasonal fan on the yardangs (the linear diagonal grooves). More on our about page https://www.planetfour.org/#/about
We call those grooves yardangs http://blog.planetfour.org/2013/01/15/you-have-asked/
Yes some new data from Season 4 with pushed live. I see North azimuth and sub solar azimuth is missing. will look into getting that updated
missing filters. So only the left half is missing green and infrared filter data
yes, it's a hot pixel on the camera.
You can find out more on our About page https://www.planetfour.org/#/about
No swiss cheese terrain here. Those channels are are carved in a different process than the swiss cheese pits.
Please mark them all if you can, it helps us with the science. Thanks for the help
no green or IR filter data on the top part (only red filter data available)
Images you see are typically a combination of 3 filters, in the right part the green & infrared filter are missing/end, so only red filter
Nicely spotted. Those are likely yardangs - You can learn more about them here http://blog.planetfour.org/2013/01/15/you-have-asked/
Very lovely indeed Pete. I just tweeted and facebooked it from the Planet Four accounts thinks for pointing it out
a lovely image. Thanks for noting it. I'll share it with the Planet Four twitter and facebook
is this still happening? I don't seem to see the issue when I classify. what browser and operating system?
What a lovely spider image. No fans though, but still lovely.
a dark image - definitely hard to discern much. I'm not sure if there is a fan or blotch. tough one
sorry these blank images are showing. I'll see if i can get them turned off
this one is a tough image... do the best you can on these
green lines are areas where the other two filter except for green had bad data.
These can be hard. I'd use the ellipse/blotch tool for those.
Yes, some lovely yardangs
looks like fans are present
Thanks for pointing this one out. Turns out then color images has padded columns.We've removed images like this from showing.
yes. we think if the wind direction changes you can get fans like these
I don't see any blotches or fans in this image.
I wouldn't have marked anything in this image either. No fans or blotches visible
I would say two fans going in slightly different directions, but similar starting point. Like the wind changed direction
that is a huge fan or blotch to the left!
I don't see such a feature. Maybe a random alignment of channels?
just shinier bits of the surface. likely some carbon dioxide frost
I'd mark these as fans because you can tell they get a bit lighter on the top left direction so I'd say they start at the line base
Looking at the same region over time helps identify which sources came first.
We can't really tell from one image what source is new or old . Might be how the material was ejected from the geysers.
dark material is actually above separated by a slab of nearly clear carbon dioxide ice.
Welcome! I'd mark those dark spots with the blotch tool.
Indeed. Those channel features are nicknamed 'spiders' http://www.planetfour.org/#/about
They do. They're carved by trapped carbon dioxide gas under a thawing carbon dioxide ice sheet.
indeed in region nicknamed 'Putative Geysers Have Been Spotted Here'
We want you to map those dark features in these images
no those don't need to be identified. Just the dark fans and blotches. Thanks!
good eye. It's the local surface winds that sculpt the fans. So by marking them you help us measure the wind on Mars
image is missing red and IR filters, but other than that it's okay.
wind erosion actually
Does look like river channels, but it's actually carved by trapped carbon dioxide ice below a sublimating carbon dioxide ice sheet
Still dust deposits, the red is actually sitting below an ice sheet made of carbon dioxide ice.
this is a tough one. I'd say there are no fans in this image.
We call those yardangs http://blog.planetfour.org/2013/01/15/you-have-asked/
That's the surface. The lines are called yardangs - more at http://blog.planetfour.org/2013/01/15/you-have-asked/
just do your best and use your best guess - this is a tough image
we can use the fans and blotches to identify geyser locations and look at wind direction and how much carbon dioxide escaped
not active sadly. The geysers have never been caught going off. The fan is from the particles brought up earlier being blown by the wind
Sorry you're having trouble.I need to know the browser information to give to the developers. Can you write that information in a help post?
Rovers are at mid-latitudes and these are images of the South Pole. They're yardangs. http://blog.planetfour.org/2013/01/15/you-have-asked/
There's no good way, usually your eye can tell the difference. Just do the best you can. We combine the result of many people soit's okay.
You can learn more about yardangs here http://blog.planetfour.org/2013/01/15/you-have-asked/
this image is near the edge where we don't have 3 filter data to make the color image, so there's only the green filter
no stereo between 3 filters - more info on how color obs are made at http://blog.planetfour.org/2013/03/05/lets-talk-about-color/
I see that too. I think as you said it is a camera glitch.
I think this image is okay. just the terrain I think.
yes, please do mark them. Wee want you to mark the dark blotches and fans in the classification interface.
actually the dark bits are fans of dust and dirt on top of a ice sheet. You can learn more here http://www.planetfour.org/#/about
Looks like a bad column of data in the image. Especially if it looks like a straight line or rectangle, it's usually a camera glitch
Learn more at http://www.planetfour.org/#/about
those do look like tree branches, but they're actually channels carved by carbon dioxide gas trapped under an ice sheet.
nice spider channels
These are fans of dist and dirt blown by the surface winds. You can learn more at http://blog.planetfour.org/2013/01/09/more-on-planet-four/
Those are dust & dirt on top of a semi-translucent ice sheet no liquid. learn more at http://blog.planetfour.org/2013/01/07/mars-fan-club/
probably a bad pixel.
you can learn more about the colors in the images on Planet Four at http://blog.planetfour.org/2013/03/05/lets-talk-about-color/
It does kind of look like a river bed, but those channels are caved by carbon dioxide ice. Learn more at http://www.planetfour.org/#/about
In this case shadows I think
sometimes 1 or 2 of the filters are missing. in part of the image
likely a glitch/missing data in the black and the green is single filter data. Three filter images are combined to make the images
It does kind of look like a river bead, but those channels are caved by carbon dioxide ice. Learn more at http://www.planetfour.org/#/about
Click on the view HiRISE image link and there it lists the pixel size for the image - for this image 25 cm/pixel
they do look like river channels, but actually these were carved by trapped carbon dioxide gas.
Where do you see boulders? I don't see any boulders in this image.
We think they're windblown fans with the particles being deposited by carbon dioxide geysers and then blown by the wind.
Likely yardangs http://blog.planetfour.org/2013/01/15/you-have-asked/
No rover has been here. We're showing images of the South Pole of Mars, the rovers are at mid-altitude. Would be cool if a rover did.
agreed. lovely yardangs
It does look like scratches but in this case they're channels carved by trapped carbon dioxide gas
More info at http://www.planetfour.org/#/about
It's not deep. Actually the dark material is on top of the ice sheet and you're viewing it from the top and seeing the dirt at the base
Well the resolution on HiRISE & CTX are very different - can be hard to compare between the 2 sometimes. Bumps here are not visible by CTX
and this http://hirise.lpl.arizona.edu/PSP_004989_0945
Swiss cheese imaged by HiRISE looks like this - swiss cheese looks like this http://hirise.lpl.arizona.edu/ESP_012271_0940
pretty sure that's just the surface bumpiness - swiss cheese more curved
Likely just bumpy soil
Not swiss cheese. Regions from HiRISE we show are not located in those areas. Swiss chesse have more curves to it, this is something else.
No swiss cheese terrain areas are shown on the original Planet Four. So this is something else
yep - missing the 2 other filter data there for some reason. Maybe a camera glitch.
Looks like a river delta but those channels are carved by trapped carbon dioxide gas.
My guess is that the bright spots are frost.
Such clear lines in this image. Amazing what wind erosion can do.
I'd actually probably call that image empty of fans and blotches. I think you're more seeing #boulders.
If the blue is in the middle of the fan, it's thought to fresh carbon dioxide frost from the geyser.
looks like for some reason the other two filters weren't in. There's a green, red, & infrared filter that normally get used & then combined.
in this case it might be a bit of frost/last gasp of the temporary ice cap changing the look of the surface color
Yes, likely to be bad pixels or a camera glitch.
Can you tell me what browser and operating system you're using?
Yes, it looks like the bottom is cut off.. Do your best here. If ti looks more like an ellipse, then use the ellipse tool.
not 100% sure - could be fresher frost
No ET here, dirt and dust is what makes up the dark features -more info about the fans and blotches http://www.planetfour.org/?#/about
Sometimes the images can be tough. This one I'd say a blotch, but go with your gut
It could be that lots of material got brought up to the surface sort of wiping away the origin. Maybe the wind speed/strength changed?
slightly deeper spider channels maybe with a blotch over it?
There the same as the middle top dark features, just larger - you can learn more at http://www.planetfour.org/#/about
I think more like #frost... maybe?
We're not 100% sure what the blue is but current thinking http://talk.planetfour.org/#/boards/BPF0000002/discussions/DPF00000d3
yes, lots of blotches in this image
looks like likes of lace terrain channels interconnected
yep, that's a tough one. I would say there's nothing there
Check out our About for more info about the fans and blotches http://www.planetfour.org/?#/about
I'd draw two blotches and have them half off the edge of the image
nothing artificial.. i think you're noticing the topography
tough one. I would have probably marked a blotch
Yeah. I wouldn't have marked anything in the image
thanks for contributing to Planet Four
Probably not a dust storm, but a smoother area in the image.
Try your best with these. We know some of the images can be hard. I'd say 2 sources too.
I probably wouldn't have marked anything in this image. I don't see any blotches or fans.
Best explanation for that could be found at http://talk.planetfour.org/#/boards/BPF0000002/discussions/DPF00000d3
it might be the top of the image, where there's only red filter coverage
I would say there are no fans or blotches in this image.
Looks like this image is in summer so the bright flecks are likely the last remnants of the carbon dioxide ice or frost layer
probably not to the exact pattern, but the directions of the fans is likely telling us wind direction.
I would have marked the big thing to the right as a giant blotch
I'd say there is no fans or blotches in this image too
I would mark that as three overlapping fans
might be carbon dioxide frost
some images it will be hard to tell if it's a fan or a blotch. The multiple answers from people will help the science team identify that.
This one is a tough case. I probably would have went with blotch, but a fan is a reasonable answer.
indeed it is
This one is a tough one. I probably would have just marked fans., but definitely a tough image. Use your best guess for images like these.
good question. I don't know. We don't really know much about spider formation.
A stunning image
likely a hot/bad pixel in the image
there's a few HiRISE images from surrounding areas of Manhattan that we activated with the season 4 data
No sand dunes in this images I think.
yep - those are 'spiders' - you can learn more here at http://www.planetfour.org/#/about
sorry to hear that. what operating system and browser are you using
No craters here.
this image is a tough one. I probably would have marked two fans here that covered most of the center part of the image
definitely looks like river channels but no water here. The channels are carved by carbon dioxide gas trapped underneath a thawing ice cap
a sneaky Inca City in the mix that still needed some classifications (i checked the title on the view HiIRISE image link)
The vertical lines might be #yardangs ( http://blog.planetfour.org/2013/01/15/you-have-asked/ )
Sorry to hear that. Do you have an operating system and browser info so our developers can take a look
those are the seasonal fans we'd like you to map by marking with the fan tool.
For better or worse, the HiRISE team went with Earth locations to name their target areas
Anytime. Inca City is the unofficial name for the targeted area. The rest of the images are currently from an area called Manhattan
Nicely spotted. Yep those big bumps are #boulders - last of the inca City images I think.
no underground temples here.
that's a tough one. I'd go with fans for this one
We want you to map those dark areas with the fan and blotch tool.
No craters here. The dark spots are dust and dirt sitting on top of an ice sheet the lighter color is the soil below the ice sheet.
I'd have drawn a few blotches here.
I'd say neither. I would say there's nothing in this image to mark.
fans and spider channels - you can learn more at http://blog.planetfour.org/2013/01/09/more-on-planet-four/
Looks like a region in shadow. I wouldn't have marked any blotches or fans.
yep - nice catch - those pockmarks are #boulders
looks like only one direction to me.
you're see #boulders as the bright spheres on top of the black
look at the channels on this spider!
A stunning image!
the images are a composite of three filters - looks like we only have the red filter observations on the top part
You can find out more at http://www.planetfour.org/#/about
It definitely looks like it might be, but it's actually dust and dirt brought up by a geyser
nice image - one I'd nominate for the #dailyzoo
I've noticed this typically happens at the start of the full frame HiRISE image.
each cutout is a 840 x 648 pixel sub-image of the full HiRISE image
49.6 cm/pixel in this case about ~149 cm across are resolved - the view hirise link below the image here has this info for all cutouts
I don't see any seasonal fans or blotches in this image either.
one for the #dailyzoo
they do look like veins - those are carved by carbon dioxide gas trapped under the thawing ice sheet
this one is a bit tough. I'd say ~3-5 botches present (the solid black regions)
yes, they do like river grooves. They're carved by carbon dioxide gas trapped underneath the semi-translucent ice sheet.
this is a tougher one. Most images are bit easier to classify. This one I'd probably have marked blotches myself.
I think the best estimate is about 50-100m for how tall the geysers are. http://blog.planetfour.org/2013/04/14/standing-on-the-surface/
on what blue might mean http://talk.planetfour.org/#/boards/BPF0000002/discussions/DPF00000d3?page=1&comment_id=50ecaea460d4053047000035
img comes from when the Ithaca is close to defrosted. so it could be frost here
very little regions don't need to be marked in this 1. that's surface variation, but dark black fan like structures yes do mark in this img
Just mark them as best you can.
no frost that I see
tough one. I'm not sure there is frost in this one, definitely hard to see
You can also had hashtags to mark the images on Talk - so for this one i'd add #blue #frost
I think this would make a great #dailyzoo image - learn more at http://talk.planetfour.org/#/boards/BPF0000006/discussions/DPF0000ipe
these are tougher ones. I'd go with the blotch tool.
I'd probably would have marked this as a blotch.
perhaps but also because of the landscape http://blog.planetfour.org/2014/06/19/new-address-ithaca-85-2s-181-4e-mars/
similar color, but doesn't have the shape of Inca City boulders at least to me.
Does look like a river, but the dark material squiggle isn't a river. no liquid water here;. More info at http://www.planetfour.org/#/about
that's a tougher one. I'd say maybe 3 huge blotches and few smaller ones. Just try your best, most images tend to be easier than this one
I'm not sure.
that's a tough one. I'd probably say fans where they start in top left and go towards bottom right
Looks like a hot pixel or a bad pixel to me.
You can learn more about what these features are at http://planetfour.org/#/about
Those are blotches and fans which are deposits of dust and dirt. They are produced by carbon dioxide geysers on the South pole of Mars.
Those are channels carved into the surface by carbon dioxide gas under the ice sheet. learn more at http://planetfour.org/#/about
#hard2see says k-michael aye as well
The image is typically made by combining observations in 3 separate filters. Looks like the camera has a glitch & only red filter on top
A bit tough call, but I would say fan
tough one. I'd probably use the blotch tool
You can learn more about those features here at http://blog.planetfour.org/2013/01/09/more-on-planet-four
These are yardangs produced by erosion by the wind http://blog.planetfour.org/2013/01/15/you-have-asked/
You can learn more here http://planetfour.org/#/about
They do kinda look like river channels but they are carved but not by water. They are carved into the surface of Mars by CO2 gas
yes that might be the case since I only see blotches not fans
The red point is just a data glitch
It does look like river channels, but those are actually channels carved by carbon dioxide gas
can you give me details on the browser and operating system
looks like that is because there's a #boulder on top of the blotch
You can learn more about those features here at http://planetfour.org/#/about
Those are channels. They are carved into the surface of Mars by carbon dioxide gas trapped under the thawing carbon dioxide ice sheet
the red line is a camera glitch - means on that column we only have red filter data most likely
lots of #boulders
#boulders with some small fans appearing to originate from them
#boulders and maybe #frost ?
nice example of #boulders
I don't think there is any #blue in the image. At least I don't see any.
Channels are carved by trapped carbon dioxide gas under a thawing ice cap. http://blog.planetfour.org/2013/01/09/more-on-planet-four/
Looks like compression ridges, but they're actually depression. Sun angle in most images is flipped since images are not map projected.
no carbon meteors. This is part of the seasonal defrosting of the carbon dioxide ice cap in the south Pole. http://planetfour.org/#/about
I don't think there is much shadow in the image - I think those are blotches from seasonal thawing. learn more http://planetfour.org/#/about
Those light circles you're calling bubbles are actually #boulders - they do kinda look like like bubbles
I would say there is nothing to mark in this image
We want you to mark those in the interface with the blotch tool
The green stripe is a camera glitch
You can learn more about the coloring of images here http://blog.planetfour.org/2013/03/05/lets-talk-about-color/
smallest thing that you can resolve in a HiRISE image is coffee table sized
yes, that's how we think these features form. You can find out more here http://blog.planetfour.org/2013/01/07/mars-fan-club/
I'd mark the dark streaks as fans
Those are channels carved into the ground by carbon dioxide gas. You can learn more on our about page http://planetfour.org/#/about
You can learn more the process at http://planetfour.org/#/about
We don't think there were oceans here. These patterns are carved by carbon dioxide ice under a carbon dioxide ice sheet.
A #blotch at the bottom left - we want you mark those in the interface
We think is either frost or fan particles sinking into the ice and causing the ice to melt and re-solidify changing it's crystal structure
You can learn more at http://planetfour.org/#/about
These look like river channels but these are actually carved by carbon dioxide gas
we think carbon dioxide gas geysers http://planetfour.org/#/about
we would like you to mark these features as fan. From my eye it looks like the fans start from the topward direction
I would have marked these as fans since they are linear features
that's really dark - might be early in the season images close to when the sun was coming up
You can learn more at http://blog.planetfour.org/2013/01/09/more-on-planet-four/
actually the gas is what carves the faults from above the gas is trapped between the ground and an ice sheet.
Those channels are carved into the surface by carbon dioxide gas trapped under the thawing carbon dioxide ice sheet on the South pole
Learn more at http://planetfour.org/#/about and http://blog.planetfour.org/2013/01/09/more-on-planet-four
That is a blotch which is a deposits of dust and dirt. They are produced by carbon dioxide geysers on the South pole of Mars
indeed. I think this might be known as 'lace terrain' http://blog.planetfour.org/2014/01/09/the-manhattan-region-on-mars/
Nicely spotted. Those are channels. They are carved into the surface of Mars by carbon dioxide gas trapped under a CO2 ice sheet
I would have marked three fans.
I think that's just two of the spider channels that have joined or look like they have joined
I would have called those blotches
Not buried. The dark patches are actually on the top layer above the ice. Learn more at http://blog.planetfour.org/2013/01/07/mars-fan-club/
I can make out 3 fans so i probably would have used fans but this image is is tougher than most
The blotches are dust and dirt deposited by a carbon dioxide geyser - learn more at http://planetfour.org/#/about
those are channels carved in the ground - you can learn more at http://planetfour.org/#/about
Nicely spotted. but the channels aren't carved by water but by carbon dioxide gas . learn more at http://planetfour.org/#/about
You can find out more about these channels and how they form at http://planetfour.org/#/about
Those are channels. They are carved into by carbon dioxide gas trapped under the thawing carbon dioxide ice sheet on the south pole of Mars.
This blog post should give you some more background of what you are seeing http://blog.planetfour.org/2013/01/09/more-on-planet-four/
what browser and operating system are you using?
for this image I would say there are no fans and blotches to mark
green dots are just a glitch with the camera
there's a blotch and a fan in this image
don't think there is any seasonal blotches in this image. So I probably wouldn't have marked anything in this image.
a #blotch- we want you to mark those on the site
i think a bad pixel
if I think I see what you're talking about- I wouldn't mark the brown coloring (next the largest black fan in the image) as a fan
bad pixel column in the image caused by a camera glitch
I'd mark those as fans
That's a data glitch. Something happened with the camera when it took the image creating the line. Not a feature on Mars.
The green line is a camera glitch. An issue with the camera when taking the photo.
I would say most of these are fans. If there appears to be any kind of directionality mark as a fan.
I see what you mean. Just barely there. Probably for this image I wouldn't have marked anything in the interface.
cold be frost more likely we think that some of the blue is than the fan particles have sunk into the ice, the ice recrystalized
A Nice discussion on the subject can be found at http://talk.planetfour.org/#/boards/BPF0000002/discussions/DPF00000d3
nicely spotted. those are boulders in the blotches, we want you to mark those dark blotches
I'd mark these as fans
Actually channels carved into the surface. More http://blog.planetfour.org/2013/01/16/if-it-looks-like-a-ridge-its-a-valley-1st-rule-of-mars
these are fans on the surface from dust and dirt brought up to the surface learn more here http://planetfour.org/#/about
Please try 2 mark as many as there are. We use your markings 2 count know many fans there are which tells us from year to year things change
do you best on images like this. Most images have a lot less, but too try to mark as many as possible.
Also some more examples at http://planetfour.org/#/about/examples
those dark features we do want you to mark. they're blotches. You can learn more about at http://planetfour.org/#/about
Yes sometimes there aren't fans or blotches in the images. That's okay. just click finish and move on to the next image
that's a glitch. the images you see are comprised of 3 filters, 'red', 'blue, 'green, and looks like two of the filters are missing there
we think that likely it is either frost or particles from the dark fan sinking back into the ice changing the structure of the ice
You can find out more on our about page http://planetfour.org/#/about
The channels are carved into the surface by carbon dioxide gas trapped under the ice sheet
No I don't think so. I think that's the color in the 3-filter combined image
knowing there is a fan there in the image by marking even if the edge isn't quite right
this one can be hard. some images will be hard like this others will be easier. Don't be discouraged. just do the best you can.
yes that's true except it's coming through cracks in a semi-transparent ice sheet. Learn more at http://planetfour.org/#/about
Learn more at http://planetfour.org/#/about
Those are blotches & fans which are deposits of dust & dirt. They are produced by carbon dioxide geysers which lofts dust 2 top of ice sheet
lots of #fans. We want those marked with the fan tool in the interface
those are fans surrounding the blotch - please mark all the features with the marking tool
those are blotches - we want you to mark them with the blotch tool
we want you to mark those black features with the fan tool.
those should be marked with the blotch tool
You can learn more about what these features at http://planetfour.org/#/about & http://blog.planetfour.org/2013/01/09/more-on-planet-four/
We want you to mark these with the blotch and fan tool.
Those are blotches and fans which are deposits of dust and dirt. They are produced by carbon dioxide geysers on the South pole of Mars .
lots of camera glitches in this image - missing filters
Mark the dark areas. Learn more at http://blog.planetfour.org/2013/01/09/more-on-planet-four/
I think the dark is remnants of fans/blotches and not shadow.
Yes that looks like a glitch
yes and we want you to mark all of them with the fan tool
Learn more about them at http://planetfour.org/#/about
Those are fans made up of of dust & dirt. They are formed by geysers which lofts the dust on to the top of the carbon dioxide ice sheet
They're yardangs http://blog.planetfour.org/2013/01/15/you-have-asked/
yep - do try and mark as many of the fans as you can
Looks liken polygonal cracks to me
I would actually say it's two big fans next to each other - starting from lower right heading to upper left in direction
in this those are depressions. channels carved by carbon dioxide ice trapped underneath the thawing ice slab in the spring/summer
that's likely a bad column
could be yardangs http://blog.planetfour.org/2013/01/15/you-have-asked/
it's a known bug that unfortunately will still take a long while to fix. for now mark as many as you can before the interface freezes up
These are likely yardangs http://blog.planetfour.org/2013/01/15/you-have-asked/
this one is a hard one, but I see some clear fans and blotches.
Lots of blotches! nice
Yes the material likely was uplifted by jets/geysers that broke through the ice
Might be the sun reflecting in the channels.
see some #boulders too I think
yep. we want you mark the dark features - these are seasonal fans and blotches
I don't think it's either. I think these are more erosional features.
and those dark patches or blotches we want you to mark in the main interface
those are spiders. You can learn more at http://planetfour.org/#/about
It looks like there might be yardangs in the image. You can learn more here http://blog.planetfour.org/2013/01/15/you-have-asked/
images are a combination of 3 filters - looks like we got only the green filter
Yep the blue line is definitely a bad column in the image. It sometimes happens, and it will usually be a very bright color.
You can learn more about these at fhttp://planetfour.org/#/about
very big blotches - definitely mark them in the interface.
I'd probably mark those as two fans in the lower right corner.
They look raised but it's because the sun angle is different from that on Earth (we didn't rotate the images). These are actually channels
yes this is a hard one. I think some fans, but very hard to tell.
I would say all fans
It kind of looks like liquid, but it's actually dirt on top of an ice sheet. We want you to mark these in the interface
Looks like an image with no fans on it.
The cutouts we show are a combination of 3 filter images. We're missing the green & blue filters in the top part of the image
These are the fans & blotches that we want you to mark in the images They are caused by geysers lofting dirt to the surface of the ice sheet
that looks like a bad pixel to me
My guess is maybe yardangs forming http://blog.planetfour.org/2013/01/15/you-have-asked/
image with spider channels only on the left
no, I don't think there are any fans or blotches in this image that you could mark. I think the image is just very dark
they're actually on the surface, not shadows. They are still there when the sun angle changes.
yeah likely a bad pixel
no fans or blotches here
yep these are #yardangs
You can find out more these here http://blog.planetfour.org/2013/01/15/you-have-asked/
could be a bad pixel...
You can learn about those features here http://blog.planetfour.org/2013/01/15/you-have-asked/
not tiny impacts - those are lots and lots of fans and blotches of dust brought up to the surface of the ice sheet by carbon dioxide geysers
using the create a new post on the right side - you add images and make a discussion that will show up on the message boards
no shadows those are blotches with the #boulders
The red is iron oxide. http://www.universetoday.com/22580/why-is-mars-red/
yes mark these
see blue #frost
Looks like a lake bed but it's not. Those are channels carved by carbon dioxide gas flowing under the thawing carbon dioxide ice sheet.
when you finish the tutorial click next and finish and try doing it again if nothing comes up
those might be #boulders
beautiful #spiders or maybe #lace
#frost definitely CO2 frost Mark these as Interesting features in the interface
looks like #boulders are in the image
I found the answer for you Bright bluish: gas re- condensed on top of the ice as fine-grained bright frost
I'm not sure but I think that's CO2 frost that we're seeing with the fan - very cool #frost
Maybe the surface is weaker and there are lots of cracks in the ice
I think this is lace terrain - lots of spiders interconnected
Is than a fan?