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Strange earthquake waves rippled around Earth
- warent 8y agoI have essentially zero knowledge of how all this stuff works but I wonder if this is from something going on much deeper in the Earth, like perhaps the very core itself just gurgled on a chunk of Earth that fell in or something.
- CardenB 8y agoThe bottom of the article is “99.9% just noise and 0.1% it’s something” and says no one knows. Sounds like not a very big article
- vorticalbox 8y agoThis is a quote from someone on the investigation not the author of the article. You should read it all, it's a somewhat interesting read.
- gcb0 8y agothe core has much more pressure, it is mote likely to shoot itself out instead
- ian0 8y agoThe twitter exchanges between the geologists mentioned in the article are great. They talk in real life how hackers talk only in movies. Very jealous. https://twitter.com/matarikipax/status/1061590953876582402 https://twitter.com/matarikipax/status/1061590953876582402 https://twitter.com/ALomaxNet/status/1061637338709790721 https://twitter.com/ALomaxNet/status/1061637338709790721
- powvans 8y agoGoogling the Mayotte Island that they tracked it to shows that a magnitude 5.0 earthquake occurred within the last hour: https://earthquake.usgs.gov/earthquakes/eventpage/us1000hwxr/executive https://earthquake.usgs.gov/earthquakes/eventpage/us1000hwxr...
- brownbat 8y agoTangent, but this place, which I knew basically nothing about before just now, appears to be stunningly beautiful, judging from the somewhat random sample of images on Wikipedia: https://en.wikipedia.org/wiki/Mayotte 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.
- seriouspat 8y agoI lived there for 4 years and you shouldn't trust the random pictures you see on the internet. The place is a shithole.
- distances 8y agoI'd love to hear of some experiences!
- maeln 8y agoMayotte is a French oversea territory. And like almost all french oversea territory it is very poor, but less than the average neighbor countries leading to a lot of immigration which are difficult to control (even though Mayotte is an Island which make it a bit more controllable than Guyana for example). This usually end up in a increasing poverty and unemployment, leading to criminality, aging infrastructure, and public services not being able to handle the demand. 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.
- checker659 8y agoI understood the P / S part (P-waves and S-waves).
- anon2775 8y agoLong period waves and their decay signature makes me suspect "water hammering" of a large volume of magma came to an abrupt stop inside a magma chamber or tube.
- cryptonector 8y agoSome of the tweets speculate about a magma chamber roof collapse due to the chamber emptying a bit.
- SubiculumCode 8y agomy favorite:Good questions! A simple body wave M may underestimate and simple surface wave M may overestimate, but a waveform-based moment-tensor inversion type M for the surface waves may confirm shallow depth and produce a usefully accurate M...
- cryptonector 8y ago> It looks like two or more frequencies mixed ... Eh? Do seismologists not have FFT signal processing tools at their finger tips.
- bsamuels 8y agoone of the pictures is literally a fft graph, so yes
- njarboe 8y agoSeismologists invented FFT signal processing. Rumors circulate at oil companies that many companies discovered it independently and were using it internally years before the method was openly published. It would be hard to underestimate the value of FFT processing to that industry.
- gpvos 8y ago*overestimate
- cryptonector 8y agoThanks for those links. Some of the commentary speculates that a magma chamber emptied a bit and its roof collapsed as a result of a quake, and that collapse is the source of the low-frequency waves. Fascinating.
- kristianov 8y agoPlease don't be the military...Please don't be the military...Please don't be the military...
- peterlk 8y agoI don't like feeling like a conspiracy theorist, but those signals look really clean [0]. Not necessarily the military, but... it's so intentional-looking. > “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/1061590953876582402 https://mobile.twitter.com/matarikipax/status/10615909538765...
- jerf 8y ago"“They're too nice; they're too perfect to be nature,”" 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 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.
- posterboy 8y agoThe signals are filtered, reconstructed or otherwise dealt with, of course they look clean.
- cyberferret 8y agoCaterpillar drive? https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive
- arthurcolle 8y agoI wonder what the US Navy is testing!
- flukus 8y agoThe French Navy starting another round of nuclear testing might be more likely for this one, it's only 20 years since their last ones. We should get greenpeace to send the Rainbow Warrior III over.
- arthurcolle 8y agoToo easy to detect nuclear testing these days, doubt its that
- flukus 8y agoIs it? I thought sysmographics were how we knew about North Korean testing. I assume a deep underwater test would be just as hard. But as another more knowledgeable poster mentioned, it doesn't fit the profile.
- kaybe 8y agoThere is an extensive monitoring system in place to enforce the CTBT (Comprehensive Nuclear-Test-Ban Treaty). You can find the stations here: https://www.ctbto.org/map/ 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-and-scientific-applications-of-ctbt-verification-data-and-technologies/ https://www.ctbto.org/verification-regime/potential-civil-an... https://en.wikipedia.org/wiki/Preparatory_Commission_for_the_Comprehensive_Nuclear-Test-Ban_Treaty_Organization https://en.wikipedia.org/wiki/Preparatory_Commission_for_the...
- samstave 8y agoThis happened before, i had forgotten about it. But it was posted on some forum, and they could track the seismic waves as they traveled from the eastern US to the western US - and they were exceptionally fast... but the interesting thing of when that particular event happened was that the speculation was it was the detection of secret underground high-speed transports, between DUMBS... 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.
- codeulike 8y agobetween DUMBS... between what?
- EvilGrin 8y agoDeep Underground Military Base
- robertfw 8y agoThis is my new favourite conspiracy theory. Was very entertained on my morning commute!
- samstave 8y agoYou should know that there was a patent filed in the late 60s for a tunnel-boring-machine which used a nuclear reactor as its power source, but also used the heat-output of the reactor to melt the earth surrounding the tunnel it was boring so as to make a structurally sound tunnel https://patents.google.com/patent/US3693731 https://patents.google.com/patent/US3693731 https://patents.google.com/patent/US3885832 https://patents.google.com/patent/US3885832
- toyg 8y agoI’ll take a stab at it: Defensive Underground Missile Bunker Sites, or something to that effect.
- bhingque 8y agoI just TODAY finished Nemisin's Broken Earth series.
- lioeters 8y agoTracked down this reference to: N. K. Jemisin - the first in the series being The Fifth Season, winner of the Hugo Award for Best Novel 2016. Thanks for the reading tip!
- gscott 8y agoI wonder as polar ice melts and the weight distribution on earth changes because of it if the planet wouldn't twist a little bit while spinning and cause earthquakes, even if just small ones.
- pasta 8y agoYes I also think a lot of things will happen, because of the climate change, that we never experienced before. 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.
- pbhjpbhj 8y agoAny chance that magnetic field flips are related to climate changes in the past?
- pasta 8y agoYes this could be the case: https://en.m.wikipedia.org/wiki/Geomagnetic_reversal https://en.m.wikipedia.org/wiki/Geomagnetic_reversal 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.
- taneq 8y agoWell, Dr. Karl thinks it's messing with the Earth's rotational axis, I imagine that could do it: https://cosmosmagazine.com/geoscience/why-is-earth-s-axis-shifting https://cosmosmagazine.com/geoscience/why-is-earth-s-axis-sh...
- dimnsionofsound 8y agoThe abstract on this [1] makes me think something similar could be happening here: low attenuation implies the resonance would take quite a number of cycles to die out like the one discussed in the article. Here’s another abstract [2] describing resonance with periods near 10 seconds lasting a long time. [1]: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/1999GL005352 https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/1999... [2]: http://science.sciencemag.org/content/299/5615/2058 http://science.sciencemag.org/content/299/5615/2058
- ajbetteridge 8y agoThe comments here so far are one reason I prefer HN. If this was reddit the first post undoubtedly would have been a meme pic with the phrase "Aliens!!" :)
- onetimemanytime 8y ago>>The comments here so far are one reason I prefer HN. If this was reddit the first post undoubtedly would have been a meme pic with the phrase "Aliens!!" :) 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
- gnulinux 8y agoThis thread so far has a sleeping dragon and bunch of Cthulhus.
- fithisux 8y agoWhy strange? If the theory cannot explain it, then fixit :-)
- dev_edw1234 8y agohjj
- dev_edw1234 8y agokjhhj
- thasaleni 8y agoI'm imagine a dragon that has been sleeping beneath the sea for hundred years just woke up, and nothing is gonna change my mind
- deleted 8y ago[deleted]
- BenjaminBlair 8y agoIf it was in the Pacific I'd say it's Cthulhu rising.
- jrd259 8y agoI noticed in the article: "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.
- Flozzin 8y ago"the agency estimates that a magma body that measures about a third of a cubic mile is squishing its way through the subsurface near Mayotte." Since it's a magma body moving Mayotte, Mayotte could be moving relative to it's place on the plate?
- JoeAltmaier 8y agoSure it did - relative to the GPS coordinate system.
- jhayward 8y agoJust because one uses GPS to measure position does not mean one is calculating position in WGS84, the GPS native geodetic datum. 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.
- JoeAltmaier 8y agoBut that ground point is located by GPS as well, which translates the more-precise location relative to the ground point right back to the WGS84 frame
- jhayward 8y ago
- yosito 8y agoThis was my understanding from the article; there's probably a magma chamber shifting in some way, and resonance of pressure waves inside that chamber is causing outward waves to be projected around the earth. The metaphor I imagine is a boat in the middle of a lake having a sudden (non-explosive) hull breach that causes it to fill with water and rock rhythmically side to side. As it rocks, ripples from the boat extend outward in the lake at the same slow frequency that the boat is rocking, eventually spreading out through the entire lake.
- cwkoss 8y agoPardon, I know very little about fluid dynamics. How would a hull breach cause a boat to rock rhythmically side to side?
- apatheticonion 8y agoThe people using buckets to scoop it out, obviously.
- yosito 8y agoI don't know a thing about fluid dynamics. This is just a layman's understanding. But the idea is that as water rushes in from the hull breach, it then sloshes from side to side. It's rhythmic based on the size of the boat and how long the water takes to slosh back and forth.
- dghughes 8y agoI wonder if it has to do with activity in the Great Rift Valley to the northwest? A continent being split in two must cause some odd behavior for an entire region.
- EngineerBetter 8y agoIt's clearly the Forerunner portal to the Ark waking up.
- mxuribe 8y agoClearly, the wave is from movement and noise generated by a large (multi-mile long) subterranean hard drive or processor or machine spinning to life after having been given the "wake on LAN" (or some other SSH/RDP-like) signal from Oumuamua [1] - who just got into wifi range earlier this year. The signal is just too clean for it to be natural; it must be artificially generated. So, its either aliens returning, or some Earthly code recently got deployed for Earth 2.0. (Oh, did you think we were living in Earth 1.0...Hmmm, interesting. Do you also think that's air that you're breathing?) ;-) [1] = https://en.wikipedia.org/wiki/%CA%BBOumuamua https://en.wikipedia.org/wiki/%CA%BBOumuamua
- pmilla1606 8y agoI love this. Douglas Adams also comes to mind.
- mxuribe 8y agoExactly my motivation for my comments! :-)
- Alex_Fragd 8y agoI have some requests I'd like to see in the next update: 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
- mxuribe 8y agoDuring recent sprint retrospectives, product owner continues to battle for the need to include hemorrhoid features, hence the constant addition of user stories. Needless to state, none of us is a fan of this set of hemorrhoid features...but product owner is quite, er, um, powerful. But the nerf mosquitoes; yeah we can put that one in! For human ingestion, we'd need a little more details for a user story there. :-)
- 8y ago
- hindsightbias 8y agoEver since Oumuamua went thru, I've been thinking of Greg Bear's Forge of God. Aliens spike the earth with a binary matter-antimatter neutronium weapon. They orbit the core for awhile...
- rasz 8y agothere we go https://www.cbsnews.com/news/alaska-earthquake-today-anchorage-tsunami-alert-issued-live-updates/ https://www.cbsnews.com/news/alaska-earthquake-today-anchora...
- jhayward 8y ago> “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. Today I learned that seismologists have to take in to account wind farms when filtering noise.