Continued G4 (Severe) Geomagnetic Storming Observed • Hacker News Board

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#21

Post by detaro » Fri, Sep 08, 2017, 5:21 PM UTC

mrguyorama wrote: post #11

Animats wrote: post #9

Checking the PJM power grid's alerts: Warning: A Geomagnetic Disturbance Warning has been issued for 01:47 on 09.08.2017 through 17:00 on 09.08.2017 . A GMD warning of K7 or greater is in effect for this period. Additional Comments: SpaceWeatherPredictionCenter Extended original Warning of GMD Intensity of K7 or greater until 9/8/17 21:00 UTC (17:00 EDT). Warning: A Geomagnetic Disturbance Warning has been issued for…

How common are long-distance DC lines and what are they used for? My understanding is that the vast majority of power infrastructure is AC, and long distances are using High Voltage AC lines

For undersea connections, the water around it means the line has a lot higher capacitance. An AC link has to load/unload that capacity all the time and looses energy to it, a DC link doesn't.

Similar effects happen with normal power lines as well, so it also has benefits on long-distance connections on land. Since you need conversion equipment on all ends, it's typically used only for point-to-point links, not for lines with branches in between - an example might be connection hydro plants in the wilderness somewhere to more populated areas.

For links between non-synchronized networks, since conversion is needed anyways to match between them.

Wikipedia: https://en.wikipedia.org/wiki/High-voltage_direct_current and https://en.wikipedia.org/wiki/List_of_HVDC_projects

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#22

Post by BuffaloBagel » Fri, Sep 08, 2017, 5:22 PM UTC

delegate wrote: post #15

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-...

There's also the eclipse preceding these events. Of course there are relationships, I just don't think most of us (scientists or scientifically inclined) know how to see them, since some of the links are not in the 'rational' space. Shamans still have better answers than scientists to these kinds of questions, but I don't think that most people want to hear the answers. Either way something extraordinary is taking pl…

Dude, you're blowing my mind which your causality warping.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#23

Post by vel0city » Fri, Sep 08, 2017, 5:24 PM UTC

mrguyorama wrote: post #11

Animats wrote: post #9

Checking the PJM power grid's alerts: Warning: A Geomagnetic Disturbance Warning has been issued for 01:47 on 09.08.2017 through 17:00 on 09.08.2017 . A GMD warning of K7 or greater is in effect for this period. Additional Comments: SpaceWeatherPredictionCenter Extended original Warning of GMD Intensity of K7 or greater until 9/8/17 21:00 UTC (17:00 EDT). Warning: A Geomagnetic Disturbance Warning has been issued for…

How common are long-distance DC lines and what are they used for? My understanding is that the vast majority of power infrastructure is AC, and long distances are using High Voltage AC lines

I have not heard much about long-distance DC lines in the United States, where AC transmission lines are incredibly common. However, I have read long-distance DC transmission lines are becoming more popular with alternative energy sources in China, such as the Three Gorges Dam project.

https://www.economist.com/blogs/graphicdetail/2017/01/daily-...

https://en.wikipedia.org/wiki/HVDC_Three_Gorges_%E2%80%93_Gu...

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#24

Post by hyperion2010 » Fri, Sep 08, 2017, 5:38 PM UTC

Might want to drop the 'just' there, since the warning was over as of 11am EST on Sept 8th (today).

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#25

Post by jacquesm » Fri, Sep 08, 2017, 5:38 PM UTC

delegate wrote: post #15

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-...

There's also the eclipse preceding these events. Of course there are relationships, I just don't think most of us (scientists or scientifically inclined) know how to see them, since some of the links are not in the 'rational' space. Shamans still have better answers than scientists to these kinds of questions, but I don't think that most people want to hear the answers. Either way something extraordinary is taking pl…

What a load of crock.

Eclipses have nothing whatsoever to do with solar flares, Shamans are con men and have no answers to anything relevant that scientists could not answer better and most people do not want to hear the answers any more than they want to hear other random bullshit.

If the links are not in rational space they do not exist, period.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#26

Post by cycrutchfield » Fri, Sep 08, 2017, 5:40 PM UTC

delegate wrote: post #15

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-...

There's also the eclipse preceding these events. Of course there are relationships, I just don't think most of us (scientists or scientifically inclined) know how to see them, since some of the links are not in the 'rational' space. Shamans still have better answers than scientists to these kinds of questions, but I don't think that most people want to hear the answers. Either way something extraordinary is taking pl…

Uh, you sure you are "scientists or scientifically inclined"?

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#27

Post by kylek » Fri, Sep 08, 2017, 5:42 PM UTC

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

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#28

Post by Diederich » Fri, Sep 08, 2017, 5:42 PM UTC

http://www.swpc.noaa.gov/products/aurora-30-minute-forecast is a nice resource.

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#29

Post by kakarot » Fri, Sep 08, 2017, 5:49 PM UTC

delegate wrote: post #15

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-...

There's also the eclipse preceding these events. Of course there are relationships, I just don't think most of us (scientists or scientifically inclined) know how to see them, since some of the links are not in the 'rational' space. Shamans still have better answers than scientists to these kinds of questions, but I don't think that most people want to hear the answers. Either way something extraordinary is taking pl…

The hell? What training exactly does a Shaman undergo to receive his authentic certificate of Shamanism, and how is this superior to the specialized academic training received by scientists in the fields relevant to this phenomena?

Re: Continued G4 (Severe) Geomagnetic Storming Observed

#30

Post by lithos » Fri, Sep 08, 2017, 5:57 PM UTC

avian wrote: post #18

Animats wrote: post #9

Checking the PJM power grid's alerts: Warning: A Geomagnetic Disturbance Warning has been issued for 01:47 on 09.08.2017 through 17:00 on 09.08.2017 . A GMD warning of K7 or greater is in effect for this period. Additional Comments: SpaceWeatherPredictionCenter Extended original Warning of GMD Intensity of K7 or greater until 9/8/17 21:00 UTC (17:00 EDT). Warning: A Geomagnetic Disturbance Warning has been issued for…

> For long-distance DC lines, it's a win; the system can use the power. Do you have a reference for that? They may be more resilient than AC lines, but I doubt these systems are designed to use power generated by solar events.

Fun examples have been old telegraph operators having their lines work without power connected.

As for recent things I didn't even know long range DC still existed.