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Post by lsvalgaard on Feb 17, 2011 7:17:42 GMT
Dr. Svalgaard- Just watched that wonderful SDO youtube movie the current CME's. Is what I am seeing correct or known, namely it looks to me like a region of white polarity (positive?) got isolated from the large positive regions and instead was "stuck" in a region of negative polarity and that small region was responsible for much of the activity. Is that just wrong or it is sensible? It might make sense as a small area of one polarity near a big one of another might make magnetic field lines interaction more common... The Sun is a messy place. When polarities abut they can interact. It must be remembered that the action is NOT in the photosphere where we measure the magnetic field. The flare happens far above the surface in the corona. |
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Feb 17, 2011 12:34:35 GMT
The last string (Solar Cycle Main Discussion IX) got, very roughly, 10,000 views a month. This string has nearly 10,000 views in less than ten days.
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Post by Kevin VE3EN on Feb 17, 2011 13:46:29 GMT
Keep the views and Solar Flares coming
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Post by kelken on Feb 17, 2011 15:40:50 GMT
I work with FEMA....this is a dialogue they designed for communication in the case of a geomagnetic storm....let me know what you think....read through entire manual (30 pages) Attachments:
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Post by jcarels on Feb 17, 2011 15:50:26 GMT
The website is very slow here, a new record of visitors? Damned solar flare ;D
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Post by Bob k6tr on Feb 17, 2011 16:02:11 GMT
The website is very slow here, a new record of visitors? Damned solar flare ;D That's what a little Solar Activity will do for you. |
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Post by kelken on Feb 17, 2011 16:15:53 GMT
Very exciting though! I have been awaiting the sun to come alive since january 2008 when NASA predicted this cycle to be one to watch!! (biting nails) so awesome what we are so obliviously unacustommed too in this generation and era that may change our way of life to a preindustrial style of living (possibly)
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Post by Bob k6tr on Feb 17, 2011 16:34:05 GMT
I work with FEMA....this is a dialogue they designed for communication in the case of a geomagnetic storm....let me know what you think....read through entire manual (30 pages) I have no problem with people commenting on this topic but please do so in the thread I have setup "FEMA CME Report" or send Kelken a PM or email. solarcycle24com.proboards.com/index.cgi?board=general&action=display&thread=1564Kelken we do our best to restrict this thread to Heliophysics within reason. I will post my own remarks this evening. |
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Post by kelken on Feb 17, 2011 18:47:08 GMT
Respectfully acknowledged.......Thank You Bob
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Post by af4ex on Feb 17, 2011 22:19:15 GMT
The far side is rather barren, as noted by bradk. But there is a new region about to rotate into view, whose coronal loops in 171A EUV suggest some lively magnetism. Attachments:
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Feb 18, 2011 0:43:40 GMT
The aurora is still pretty darn small...hoping for more later as we have pretty clear skies.
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Post by davidwild on Feb 18, 2011 1:27:40 GMT
So for us newbies.... would the first sign of the arrival of a CME be an increase in Kp, or is there something else we should be looking at? Kp looks very quiet at the moment.
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solarstormlover54
Level 2 Rank
Hot and dry trend Since January. Looks to continue at least through the first half of May.
Posts: 54
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Post by solarstormlover54 on Feb 18, 2011 1:35:35 GMT
www.swpc.noaa.gov/ace/MAG_SWEPAM_6h.htmlThat helps. Note the jump in speed, temp, and density. Likely signaling the arrival of the CME. The field is strongly north so I don't think this leading edge will trigger much
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Post by davidwild on Feb 18, 2011 1:38:47 GMT
Ah that's the kind of thing I was looking for - thanks!
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Post by lsvalgaard on Feb 18, 2011 2:30:22 GMT
The CME has just hit. As predicted it started out with northward field
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