Every month on Earth Matters, we offer a puzzling satellite image. The February 2021 puzzler is above. Your challenge is to use the comments section to tell us what we are looking at, where it is, and why it is interesting.
How to answer. You can use a few words or several paragraphs. You might simply tell us the location, or you can dig deeper and explain what satellite and instrument produced the image, what spectral bands were used to create it, or what is compelling about some obscure feature. If you think something is interesting or noteworthy, tell us about it.
The prize. We cannot offer prize money or a trip to Mars, but we can promise you credit and glory. Well, maybe just credit. A few days after a puzzler image appears on this blog, we will post an annotated and captioned version as our Image of the Day. After we post the answer, we will acknowledge the first person to correctly identify the image at the bottom of this blog post. We also may recognize readers who offer the most interesting tidbits of information about the geological, meteorological, or human processes that have shaped the landscape. Please include your preferred name or alias with your comment. If you work for or attend an institution that you would like to recognize, please mention that as well.
Recent winners. If you’ve won the puzzler in the past few months, or if you work in geospatial imaging, please hold your answer for at least a day to give less experienced readers a chance.
Releasing Comments. Savvy readers have solved some puzzlers after a few minutes. To give more people a chance, we may wait 24 to 48 hours before posting comments. Good luck!
Fields after harvest, wheat, oats, lentils maybe corn?
pay attention to the shadows (light warm colors, darker warm colors) which indicate significant topography.
I think this is in Southern Utah , either in the west near Zion or the eastern portion near Canyon lands.
The wave Utah
Is there evidence of large scale cross-strata? On the order of five + meters?
I believe it’s some dessert area, possibly in the eastern Arabian country.
Iron oxide stained/cemented siliciclastics are common in may arid regions, around the world, and not just near the arabian peninsula.
The Wave canyon in Arizona?
Eine hocharide Landschaft, die dennoch stark von Wasser geformt wurde. Das ist leicht möglich, weil eine schützende Vegetation fehlt. Es scheint sich um eine Hitzewüste zu drehen mit keinerlei Vegetation. Atacama, Sahara, Arabien, Takla Makan u. a. Genauer kann ich es nicht einordnen. Oder sollte das eine Teiloberfläche vom Mars sein?? Ich tippe aber auf eine Erdwüste.
Probably can count Mars out as a solution. Deep arid arroyos seem to be present as a dendritic drainage occurring across fairly continuous, horizontally stratified “bedrock”.
An inland water body or reservoir that’s dried up
What about the topographic relief as indicated by both drainage systems and shadows?
That’s the wave in arizona/utah, I was there a couple months ago and hiked all the way to the wave, it was an amazing day but one of my friends got lost, I’m glad we found her by the end of the hike though
Devon Island, Described as one of the most (Mars Like) places on Earth and most beautiful places to see.
Maybe it could also be Sahara Desert, located in Africa
Remember there’s a lot of places that looks like Mars on Earth but I’m pretty sure it’s Devon Desert…
Okay I’ll bite. There is a large region in Australia around the borders of SE Northern Territory, NE South Australia, and SW Queensland that may be a contender. Difficult to narrow down but I’ll give it a go. Witjira National Park area in north central South Australia, near border with Northern Territory is my best guess. Second best guess is Astrebla Downs National Park area of SW Queensland.
Desert maybe
Gold mine dump , south africa.
Salda Lake
Isn’t that wood? That’s definitely wood
It must be Jezero Crater. Mars. Location of the Perseverance landing site. Looks like deep valleys. The sunlight is coming from the top left of the photo. Does this image show the planned path of Perseverance? Former lakebed. Likely location of former life – if any.
My guess is the Gobi desert .
My guess it’s the Gobi desert . Looks like it could be from another planetary body.
1st guess: Desert in Sahara or Africa
2nd guess: Tree trunk or wood
Looks more like wood
I believe it is an ice-flow (probably in the Pyrenees or Alps) coated with dust from a recent Sahara dust storm.
It is looking like surface of mars
Part of a tree trunk carved at angles to show branches and annular rings.
Tree hardwood
Namib desert dunes?
This is Martian landscape & canyon area on the surface, which appears to depict where at one time there was a body of water there and it had evaporated, because of the way that the rock or surface dirt is aligned.
Palouse – Eastern Washington – wheat fields
Tanezrouft Basin in Algerian Sahara. See NASA image on the Nasa app (which is brilliant by the way! Thanks!): ‘Land of Terror’, 10-14-2014. NB excellent observation that it looks like wood grain. Have not been able to find the spot on the available Earth viewing apps though, including Nasa’s Earth Observatory…
PS. Forgot to say it is interesting (working assumption at mo’) because it looks like sedimentary basin undisturbed by tectonics (African shield?), which has undergone climate transition from wet conditions (‘Green Sahara’?) to desert, with wind erosion.
I think it is a micro photo of a carved and partially sanded piece of wood in the lab at earth observatory.. G
I think what we can see is a plateau, formed by multiple different layers of sediment, that where than shaped and formed by wind erosion. Thats how the topography war made.
The picture is of the ancient tree from 42,000 years ago that was just recently cut and determined how long ago it was that the Earth’s magnetic polar field has reversed
The Siberian Traps
While I can’t make a guess about location, I should say that this image looks like a contour line defining lengths in geography
There was once (maybe multiple times )an incredibly large glacial lake behind an ice dam. When it broke it left the marks on the landscape as it rapidly drained. See glacial lake missoula for a similar event.
It is a either a really old tree stump, or a desert, or a desert that has been friven on. I think it is interesting because it is really weird and cool!!
Me and my son have been in a similar place where there was a large valley, fairly closed/surrounded by tall hills and a small lake at the bottom of the valley. We were at the top of the hills and head down on the hill towards the lake. The side of the hill had/has parallel stripes like steps, about one meter wide or less. Similar to the image, just at a smaller scale. The sides of the valley are covered in grass but underneath the soil looks like it has more clay in it. My explanation is that the place and the place in the posted image was in the past, maybe millions of years ago either a very large lake or the remnant of a sea and as the water level dropped each year it created a step, like the steps created by ocean waves. There was some event each year, like melting snow in the spring or summer that caused a sudden rise in water level that eroded the top of the wall where water exited the lake. The height of the wall erosion probably equals the height of the steps. The width of the steps is a function of the slope. This wall erosion caused the water level in the lake to decrease after the sudden rise event subsided. The same could have happen with a river valley if the river was a giant river in the past with massive floods in the spring or summer if the flood lasted for a few months. It might be that the river itself is a natural creation of this long lasting cycle – the exit path of the water towards the sea, the union of the exits of all the decreasing lakes. But the lake/basin theory is more precise. The stripes that go from top to bottom of the valley in the posted image are also from erosion but only as a later event after the exposed part was out of the water permanently.
Cut wood near a branch, slightly sanded down, but showing various ages of growth of tree rings.
Monument Vally