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Continued G4 (Severe) Geomagnetic Storming Observed

swpc.noaa.gov

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Re: Continued G4 (Severe) Geomagnetic Storming Observed

#81

Post by jerkstate »

bsder wrote: post #63
jerkstate wrote: post #17

Earlier quoted context omitted.

HVDC is becoming more common for medium and long distance transmission lines because HVDC doesn't suffer from the "skin effect" where current is carried mostly by the outside of the conductor, and therefore you can transmit more power with less conductor with HVDC. The tradeoff is, it's much easier to step up and step down AC voltage (using solid state transformers)

True, but none of this has changed recently. The recent change is the fact that high-voltage semiconductors now make step-up/step-down efficient. In many cases, more efficient than purely using transformers (most semiconductor stuff still uses some form of inductive effect--they just do so at MUCH higher frequencies than in the past which allows them to use MUCH smaller components and get much higher efficiencies). O…

Cool, thanks for the additional info. TIL!

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#82

Post by dscpls »

japhyr wrote: post #74

I was going to ask if anyone knows whether these storms affect the accuracy of GPS systems. Then I found this: > In calm conditions, single frequency GPS systems can provide position information with an accuracy of a meter or less. During a severe space weather storm, these errors can increase to tens of meters or more. Dual frequency GPS systems can provide position information accurate to a few centimeters. In this…

Nice resource, thanks!

Note that this is exactly why they teach you not to rely on your gps for navigation between rocks. You should be using sightings, log and compass. And that's why you dont leave anchorage in fog.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#83

Post by astrange »

kylek wrote: post #27
olivermarks wrote: post #7

Does anyone have any thoughts on any relationships between the recent solar flares and magnetic storms and the hurricanes and Mexican earthquake? Is this coincidence or does major space weather events result in major earth weather? https://www.space.com/38057-sun-unleashes-decades-strongest-...

http://quakewatch.net/ attempts to predict earthquakes using solar factors (and things like outgoing longwave radiation). https://twitter.com/thereals0s has some snaps of their alert maps leading up to the quake (this one happened to be in their alert zone). Edit- Also related-site http://spaceweathernews.com/ has a lot of pretty graphs to look at if you're interested in this stuff

That site has an interesting setup where they want you to pay them $2 a month to do work for their app, in return for youtube shoutouts.

Oh, they’re New Age scammers? Haven’t seen that in a while, but you can tell from the magical powers ascribed to anything related to “energy”.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#84

Post by RandVal30142 »

meseznik wrote: post #37
colanderman wrote: post #4

Meaning of G4: http://www.swpc.noaa.gov/noaa-scales-explanation "Power systems: Possible widespread voltage control problems and some protective systems will mistakenly trip out key assets from the grid. Spacecraft operations: May experience surface charging and tracking problems, corrections may be needed for orientation problems. Other systems: Induced pipeline currents affect preventive measures, HF radio propagat…

Apparently there are 100 of these per 11-year solar cycle. Seems that there are much more than 100 flares each cycle: https://hesperia.gsfc.nasa.gov/hessidata/dbase/hessi_flare_l... It also seems that flares above X2.2 are quite rare. There have been only 10 of those since 2008: https://en.wikipedia.org/wiki/Solar_cycle_24#Events The latest flare, measured at X9.3 is VERY rare: https://www.spaceweatherlive.com/en/sol…

That last link is extremely interesting. Just spent some minutes watching the videos of previous record setting flares.

The flares oriented towards Earth are very obvious due to the amount of static after flare ejection. We all exist in a narrow band of of environmental conditions, spooky thinking about how much energy is occasionally hurled towards us. Just a slight lick from Sol and we could be done for.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#85

Post by smaudet »

iamatworknow wrote: post #58
dingo_bat wrote: post #55

Earlier quoted context omitted.

> Reality exists independent of the observer. Quantum mechanics would like a word with you.

Quantum mechanics is about probabilities. Just because there's an infinitesimally small probability of something being possible doesn't make it a foregone conclusion.

Which branch of proven physics happily marries quantum and relativistic physics again?

Shamans are a religion yes, and it probably wasn't very wise mentioning that in the presence of a bunch of ruthless capitalists - you may as well dangle a steak in front of dogs.

But while I can't know that anything is being said that is true, and can't discount it either. Theorems are proven by confidence level in the null hypothesis being incorrect. Evidence is the only thing that separates 'science' from belief. A lack of evidence is a failure to prove anything, not a proof that it doesn't exist.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#86

Post by dogma1138 »

dingo_bat wrote: post #79
dogma1138 wrote: post #68

Earlier quoted context omitted.

Don't confuse localization with reality. You also seem to infer observer is some form of intelligence, in reality an observer or a measurement isn't anything more than a physical interaction.

I am talking about this type of experiments: http://newatlas.com/quantum-theory-reality-anu/37866/

That is just bad journalism. This is localization, let's do a macro entanglement experiment.

I take you and your friend and draw 2 cards out of a deck one red one black.

I give each one of you a card without you or myself knowing which one has which.

You and your friend are now entangled, you share a unit of information if I split you without measurement I "lose" or to be more exact cannot quantify the information.

I know that each of you has a card, I know that together you have one red and one black card and just like entangled particles the moment I measure one of you by asking you to reveal a card the other knows which card they were holding.

This is a very rough experiment but the point stands; reality doesn't change and more importantly again a measurement isn't a scientist with a machine it's a physical interaction.

The particle wasn't localized because a person measured it it was localized because it had to interact with it another physical object which was the detector there isn't a non physical way to measure anything any measurement wil require an exchange of information which means that your system will become localized.

Also hidden variable theories aside, Pilot Wave Theory does make the same predictions as QM, explains the "weirdness"and is deterministic.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#87

Post by PoachedSausage »

Rebelgecko wrote: post #54
jsjohnst wrote: post #42

Earlier quoted context omitted.

Per the link above, this is the 8th most powerful CME hitting earth in recorded history. An X9.3 is not a yearly thing.

How far back does "recorded history" go for these sorts of detailed space weather measurements? The linked #8 ranking seems to be based on 20 years of data

As far back as the Carrington Event at least.

https://en.wikipedia.org/wiki/Solar_storm_of_1859

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