Strange earthquake waves rippled around Earth
nationalgeographic.com
nationalgeographic.com
They talk in real life how hackers talk only in movies. Very jealous.
https://earthquake.usgs.gov/earthquakes/eventpage/us1000hwxr...
https://en.wikipedia.org/wiki/Mayotte
It's humbling... I feel like a bad citizen of the world for my ignorance of Mayotte. But also optimistic... the world is full of so many amazing places, there's always going to be some next amazing place to learn more about.
Like a lot of oversea territory, it has some beautiful landscape, but is crippled by the problems above. Living there is very difficult.
EDIT: Note also that I am not blaming immigrant. The problem being that adding more poor people in an already poor territory doesn't solve the problem of poverty. And France unwillingness to treat its oversea territory fairly and really invest in them is the main root of the problem.
One of the places that stuck with me the most is Kay Winnie in Seguin. It's a house, built by a man who moved there from the city in order to protect one of the last forests in Haiti. He grows and plants saplings to grow the forest. Unfortunately, you need to hike quite far or drive through incredibly rough terrain to get there.
edit - is worth reading - https://www.goodreads.com/book/show/133399.The_Comedians
Yup. And having been there and having spoken to locals and people from the UN, MSF, etc. I don't feel like it's going to change soon. A lot of the economy is driven by NGO's and that money all ends up in the pockets of the rich home, hotel and restaurant owners. Meanwhile the poor sell each other mangos and meat in the streets. It's like there are two completely separate economies. And whenever a politician wants to make a change, tribalism seems to end up ruining it because (often realistic) fear of preferential treatment of some groups.
Sounds eerily similar to the situation things rapidly deteriorate from at the start of the book, which was set 60 years ago now.
> Mayotte is the newest of the five overseas departments having changed from an overseas collectivity, with OCT status, on 31 March 2011. It became an outermost region and thus part of the EU on 1 January 2014.[8]
(though they're allegedly leaving so it won't matter too much anymore)
So on a very small territory you have a third world country, Comoros, and a piece of the European Union, where, even if it is not on par with continental Europe, has a much higher quality of life.
So there is a quite large influx of immigrants from Comoros, and this is hard to manage for such a small island.
[1] In 1974, France organized a referendum for self-determination in the archipelago in which the population except in Mayotte voted overwhelmingly in favour of independence. Following the unilateral declaration of independence in 1975, France maintained sovereignty over Mayotte. The three remaining islands formed the Etat Comorian, which later became the Federal Islamic Republic of the Comoro Islands.
I think Attenborough did a documentary a while back on how the introduction of invasive cats, rats, snakes and even spiders would wipe out local fauna on these islands because the local fauna weren't used to predation. Pretty interesting stuff.
Also, the local population of these islands are suffering extreme health issues ( primarily obesity related ) due to all the junk food they are eating.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1533815/
The nature is beautiful for sure, but it isn't all paradise. And we haven't even touched on the impact of global warming on these islands and the fact that some of these islands might have to be evacuated in the next few decades.
https://www.businessinsider.com/islands-threatened-by-climat...
There was one recent article about how a mission to distribute life-saving vaccines had to be abandoned because of a lack of infrastructure and trucks able to get to the villages that need it.
[1] https://en.wikipedia.org/wiki/R%C3%A9union#/media/File:Volca...
And it's Hawaiian style, which means very fluid and low ash, which is the most fun style of volcanoes because it won't really explode (the gas can escape steadily instead of building up pressure) and you can get pretty close during an eruption.
Worst case, your flight is delayed or cancelled and you cannot stay in a specific village. Best case, you get to see an awesome and safe display of natural forces!
Eh? Do seismologists not have FFT signal processing tools at their finger tips.
Douglas Adams also comes to mind.
1. nerf mosquitoes 2. are hemorrhoids even necessary? I think we can just trash that feature. 3. human ingestion is quite buggy. often times nutritional data gets routed incorrectly. plz fix
well, I was attempting to route some potato data to my food decompounder for processing and it was mistakenly sent to the air intake vent. suffice to say this disruption of the norm caused a break in workflow.
By the way, i figure i should caution you that I've heard other users leveraging a temporary hack - while awaitjng this feature to be built/deployed - of routing potato (and other such) data via other intakes. In fact i think there was a SouthPark episode related to this hack; in that case using turkeys as the routed data.
This was fun, thanks! lol :-)
Other than it being an interesting fanciful thought to imagine if such a thing could be, i didnt think much of it.
But this is interesting in that the waves were also tracable from seismometer to seismometer...
Ill see if i can find it.
between what?
"Mayotte is on the move. Since mid-July, GPS stations on the island have tracked it sliding more than 2.4 inches to the east and 1.2 inches to the south."
If this isn't a mistake, it's also very interesting. 2.7 inches in four months is very fast. That's 20 cm/year. The fastest techtonic plates move about 10 cm/year. Also this island does not appear to be near a plate boundary, so what could make it move? The article didn't say what it was moving relative to.
Since it's a magma body moving Mayotte, Mayotte could be moving relative to it's place on the plate?
For instance many survey instruments use Differential GPS to obtain a more precise location by using corrections from a receiver at a well-established survey mark. When using DGPS the coordinate system becomes that of the reference mark, not the GPS system.
So I think the question is relevant, and takes note of the context in which ground motion is studied.
These things are in use in the 100's of thousands in agriculture now. Such base stations record their ground point by GPS location.
> [After the 2010 Chile earthquake] A research collaborative of Ohio State and other institutions have found, using GPS, that the earthquake [...] moved Concepción at least 3 metres (10 ft) to the west. [...] Several cities south of Cobquecura were also raised, by up to 3 meters.
How would a hull breach cause a boat to rock rhythmically side to side?
> “They're too nice; they're too perfect to be nature,” she jokes, although she quickly adds that an industrial source is impossible, since no wind farms or drilling are taking place in the deep waters off Mayotte's shores.
And
> For now, though, the lack of data makes it tough to say more about the wiggly forms. Hicks' preliminary models hinted that the waves emanated from subsurface inflation, rather than a magma chamber draining or collapsing. But with a little additional data, the model flipped and pointed to chamber deflation instead.
Does lend a grain of salt toward the military theory.
[0] https://mobile.twitter.com/matarikipax/status/10615909538765...
Nature does on occasion surprise us with nice clean signals; for instance, the history of pulsars, where the initial signals were so clean that people couldn't help but suspect they were artificial (and I do not mock them for that, it was a reasonable thing to put on the initial pile of theories): https://en.wikipedia.org/wiki/Pulsar#History_of_observation
The universe is still low-entropy, and will remain so for the forseeable future. Things like this can still naturally happen.
We know a lot of world wide events happened in history, so it also unlikely we never will experience huge events in the (near) future.
Edit: by the way, I don't think humans should speed up climate change... but there also will be a lot of changes we can't control.
Here’s another abstract [2] describing resonance with periods near 10 seconds lasting a long time.
[1]: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/1999...
You should read it all, it's a somewhat interesting read.
Today I learned that seismologists have to take in to account wind farms when filtering noise.
Aliens spike the earth with a binary matter-antimatter neutronium weapon. They orbit the core for awhile...
We should get greenpeace to send the Rainbow Warrior III over.
But as another more knowledgeable poster mentioned, it doesn't fit the profile.
https://www.ctbto.org/map/ (check 'international monitoring system' on the right side)
As you can see, there are seismic station for detecting underground tests (the signal differs from earthquake signals if you look at stations around the world), acoustic and hydroacoustic stations for detecting tests in the atmosphere and oceans, and isotope detection to differentiate between any kind of explosion and a nuclear one (which leave the same signal in the other detectors).
The stations have a fantastic global coverage and have been measuring for quite a while. The data set is now also given to the scientific community for all sorts of purposes.
https://www.ctbto.org/verification-regime/potential-civil-an...
https://en.wikipedia.org/wiki/Preparatory_Commission_for_the...
This is more like a forced resonance - the geological equivalent of an organ pipe.
So I'd guess there's a pipe-like feature or a chamber in the area (an old magma tunnel? - it doesn't have to be empty, it just needs to have a constant density significantly different to its surroundings) and "noise" from moving magma made it to ring.
With a 17s period and 6km/s velocity, for lambda/4 resonance the pipe/chamber would be around 30km long - which looks not-completely-insanely-wrong, possibly.
Sometimes you need to tell the truth, right away. :)
From the article looks like a large body of magma is trying to see the daylight
If the theory cannot explain it, then fixit :-)