One of the planet’s biggest cities is sinking so rapidly it’s visible from space

The city is Mexico City.

We use space based things (LIDAR and GPS) to measure it because they have very high precision, sensitivity, and aren't biased by the fact that the things you are measuring the ground relative to can also be sinking/rising. So the less sensational headline would be Mexico City is sinking, but its slow and uniform enough that only space based tools can see it over short timescales.

Indonesia’s capital, Jakarta, is also sinking so they moved the capital by naming a different city to move growth/development out of Jakarta.

"visible from space" Using extremely sensitive radar satellites.

Cant wait for the Hollywood blockbuster somehow starring The Rock..

Is there a point where it will contact deeper and more compact parts of the crust and stop sinking, or are talking "open doorway to hell" in a few decades?

Isn’t Mexico City built on a dried up lake? Is that what is making this happen?

>Mexico City is sinking at such an alarming rate that it’s visible from the space. Imagery from a powerful NASA radar system is revealing subsidence rates of more than 0.5 inches a month — making the city one of the planet’s fasting-sinking capitals. 0.5 inch a month is 6 inches a year or 15.24 cm a year. Or half a banana a year. I wonder if the residents of the city ever got those dreaded sinking feeling?

Did CNN just say f*** it and get rid of all the editors or maybe edited with Grok MECHA-spellcheck? >Mexico City is sinking at such an alarming rate that it’s visible from the space. From "the" space? Is "the space" related in any way to "the blacks"? >Imagery from a powerful NASA radar system is revealing subsidence rates of more than 0.5 inches a month — making the city one of the planet’s fasting-sinking capitals. "fasting"-sinking?? That's all from the FIRST paragraph. There is more but no point in listing them because CNN clearly doesn't care so I guess I don't, either.

I've learned to not believe a headline when it says something is visible from space. That phrase is borderline meaningless.

When I first came here, this was all swamp. Everyone said I was daft to build a castle on a swamp, but I built in all the same, just to show them. It sank into the swamp. So I built a second one. That sank into the swamp. So I built a third. That burned down, fell over, then sank into the swamp. But the fourth one stayed up. And that's what you're going to get, Lad

TLDR it’s by using Lidar. You’re not gonna see a difference from using regular arial photography

“It’s visible from space” is the dumbest trope the media uses. Pretty much anything is “visible from space” with the right equipment.

The instructor for an environmental science course I took about 15 years ago had a pair of photos he kept on his desk. One of his uni professor standing in front of a building next to a fire hydrant in Mexico City and the other of himself standing next to the same hydrant now 7 or 8 feet in the air the building's foundation exposed.

There are crazy many problems related to such sinking, especially if it is uneven. In Oslo, Norway, the now residential/commercial district "Bjorvika", used to be a commercial port that they build on by just throwing sawdust and whatnot they could find ("standard" practice all around the world back in the days I guess). That foundation is/was so weak that the whole area is/was sinking a lit compared to the rest of the city. I once walked next to the central station and a road that had "always been there" but would spon be part of the new area. Holy cooww!! Because of the construction I could see all the layers of pavement they had to lay over each other as the ground was sinking. There were probably almost 1 meter of pavement in so may layers. However, you could also see pipes and such where they had juat "given up" on repairing it. And that was a great concern when they rebuild the area. What about constant breaks in water/sewage pipes and leaks as they would break? No idea how they solved it as I do not live thers. I can't imagine how many problems they would, or will have in Mexico city regarding infrastructure.

If your in the US, look at Miami’s projections for 2060 to 2100. It’s pretty bleak

Aren't all cities visible from space?

Serious question: The sinkage may not be that much but isn’t it enough to mess up train tracks?

Mexico City aspiring to return to Tenochtitlan

There were no screams. There was no sound. The mountain called monkey had spoken. At first there was fire. And then. Nothing.

Cody's Lab on Youtube recently made a video showing that the weight of Bonneville lake depressed the ground and after the water was released from the lake the ground came back up \~15 meters (\~49 feet). I guess people need to be reminded the planet is a squishy ball with a soft liquid magma mantle.

Humans really looked at climate warnings and said let’s also drain the groundwater while we’re at it.

I mean, almost EVERYTHING is visible from space…

Wouldn’t that make it less visible from space?

There are a lot of comments on the use “visible”, as well as confusion that this settlement is measured by LiDAR or GPS- which is not. The article say the settlement has been measured with NISAR, which is a radar method. NASA refers to this as “imaging”, the radar captures a “scene” or “frame”, and the way settlement can be measured is by comparing the difference between two images (making an interferogram between two images). Of course this is all processed by computers and is not apparent by the naked eye, but I thought some of you might enjoy the reason why the term visible got conflated here.

And nobody is getting into a bell naked about it?

So, we have ABinbev and constellation to partly blame for some of this. Its also part climate change, agriculture, human consumption, etc. When inbev bought constellation, part of the deal was that corona, pacific, modelo, Victoria and any other Mexican style beer to be brewed exclusively in Mexico. Before this, constellation did have a corona brewery in Texas. Modelo has been the number 1 best selling beer in America for the last few years. Which means that Mexico has been exporting a good chunk of its water supply to the US.

Is there a 100 year sink cycle. Assuming it continues at its current sink rate 80 feet is beyond substantial

Visible with a satellite with the most advanced sensors available. Not really "visible from space".

Pretty much anything is visible from space with the right instruments.

It’s built on a swamp.

They have free healthcare for all tho now at least

I spent a lot of time in MXCD last year. People are great, but the city roads sinking below ground wound be an improvement.