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Post by lsvalgaard on Feb 14, 2011 23:09:40 GMT
The Canadian magnetometers also picked up the magnetic boost at 1600Z. Mainly in the Y (East) magnetic component, which would be parallel to the ring currents. Dr. Svalgaard, help me out here, does that confirm or falsify my conjecture that it's the ring currents? (I'm a little rusty on the right-hand rule stuff) You may be confusing the Auroral Oval Electrojets [at 100 km altitude] with the Equatorial Ring Current [at 25000 altitude]. The Electrojets run East-West, so their magnetic effect is North-South. The Ring Current runs East-West, so its magnetic effect is North-South. When both a present we see a jumbled mixture and it can be hard to tell which is which. However, at low latitudes the auroral currents are not seen [so much] so there we can get to know what the ring current is doing. |
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Post by swportugal on Feb 14, 2011 23:15:47 GMT
Gakona - Alaska Same boost...  |
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bradk
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Post by bradk on Feb 14, 2011 23:48:31 GMT
How far south will the aurora go? Time will tell...
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Post by af4ex on Feb 15, 2011 0:27:04 GMT
The Canadian magnetometers also picked up the magnetic boost at 1600Z. Mainly in the Y (East) magnetic component, which would be parallel to the ring currents. Dr. Svalgaard, help me out here, does that confirm or falsify my conjecture that it's the ring currents? (I'm a little rusty on the right-hand rule stuff) You may be confusing the Auroral Oval Electrojets [at 100 km altitude] with the Equatorial Ring Current [at 25000 altitude]. The Electrojets run East-West, so their magnetic effect is North-South. The Ring Current runs East-West, so its magnetic effect is North-South. When both a present we see a jumbled mixture and it can be hard to tell which is which. However, at low latitudes the auroral currents are not seen [so much] so there we can get to know what the ring current is doing. That's what I thought, that EW currents would produce NS magnetic field. So that boost CDN EW field, at best, is confusing me. |
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Post by af4ex on Feb 15, 2011 0:37:14 GMT
The rest of the gang seems to be quieting down, but 1158 is still very large and extremely active. Here you see the C3 Flare at 2350Z Attachments:
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Post by lsvalgaard on Feb 15, 2011 0:49:56 GMT
You may be confusing the Auroral Oval Electrojets [at 100 km altitude] with the Equatorial Ring Current [at 25000 altitude]. The Electrojets run East-West, so their magnetic effect is North-South. The Ring Current runs East-West, so its magnetic effect is North-South. When both a present we see a jumbled mixture and it can be hard to tell which is which. However, at low latitudes the auroral currents are not seen [so much] so there we can get to know what the ring current is doing. That's what I thought, that EW currents would produce NS magnetic field. So that boost CDN EW field, at best, is confusing me. The whole thing is messy, there are swirls and curls so you can easily get anything you like. |
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Feb 15, 2011 0:53:15 GMT
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jj2k
New Member
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Post by jj2k on Feb 15, 2011 1:05:34 GMT
jj2k> Thanks, ok 4 days i will keep that in mind. yea i come here > everyday hoping for a low latitude aurora prediction, one day! The delay time also depends on the solar wind speed, which can vary between 200-600 km/sec. Faster wind cuts the transit time down, of course. Also pay attention to the Bz component of the solar wind, which is the magnetic component parallel to the Earth's magnetic axis. Normally it's positive which denotes a N-orientation to solar wind. Right now it strongly negative, so pointing South. (Green oval below) Recall that two magnets repel if you put them N to N, but attract if you put them N to S. So negative Bz allows the solar magnetism to 'connect' to the Earth's magnetism, allowing solar wind to precipitate into our world, causing auroras and such. The "Aurora Oval" on the front page will turn red when we have a good connection. Which looks like it's happening right now. Thank you for that explanation and that Bz info means one more graph i understand. lol Thanks again. |
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Post by af4ex on Feb 15, 2011 1:54:10 GMT
Another M-Flare. The slope on this one suggests very big rise yet to come. Attachments:
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Post by lsvalgaard on Feb 15, 2011 1:54:51 GMT
Another M-Flare. The slope on this one suggests very big rise yet to come. still climbing. will be X Is an X ! |
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Post by af4ex on Feb 15, 2011 1:55:16 GMT
X-FLARE!
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jj2k
New Member
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Post by jj2k on Feb 15, 2011 1:55:41 GMT
Another M-Flare. The slope on this one suggests very big rise yet to come. Beat me to it  , a possible X? |
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jj2k
New Member
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Post by jj2k on Feb 15, 2011 2:01:21 GMT
Another M-Flare. The slope on this one suggests very big rise yet to come. Beat me to it , a possible X? Damn close. ;D ;D |
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Post by vk2fdxr on Feb 15, 2011 2:07:45 GMT
X ;D
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jj2k
New Member
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Post by jj2k on Feb 15, 2011 2:09:01 GMT
Woohoo and watched it live while having a beer!  |
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, a possible X?