[time-nuts] solar flares and cesium drift

tom jones epoch_time at yahoo.com
Fri Jun 8 20:53:34 EDT 2007

  I dont know about the cesium, but I can advise that in my opinion there have
not been any major geomagnetic storms in the past few days. In fact nothing
different to what has been happening for most of the last month. If anything
it is relatively quiet. Solar flares do not produce an magnetic effect, they
are purely radiation. What often happens is the emission of an associated
CME and the currently active area #960 was right on the limb of the visible
disc when the flares occured so any CME missed us. I supose it is possible
that the radiation has affected the accuracy of GPS as received after
passing through the ionosphere, but surely this would have been corrected
very quickly?

Cheers de Alan G3NYK

  Hi Alan
  What I was looking at was the xray events this past week from sunspot #960 There has been about 40 medium size xray events and I assumed that geomagnetic events went hand in hand with xray events and thought it was an explanation for my cesium/loran drift.
   I was wondering what specific dates you had this observation? I'd like to
compare that data, against some of the data I have.

Raimond Melkers

Hey Raimond here is my data please sent yours if possible.
  From 17:26pdt on  6-04-07
  To     07:20pdt on  6-05-07 I lost 40 to 50ns  and continuing 
  To     21:38pdt on  6-05-07 I lost another 10ns to 20ns and continuing
  To     05:23pdt on  6-06-07 I lost another 100ns to 110ns (strong winds ) continuing
  To     06:13pdt on  6-07-07 I lost another 50ns  and continuing 
  To     17:45pdt on  6-08-07 I gained         90ns  could today gain be a gps correction?
    Happy Time keeping:
  My orignal posting:
  We've had several solar flares this past week.  My cesium standard has lost about 200ns as compared with fallon loran and gps.
  I was showing approximately 10 to 30 nanoseconds cesium drift  the previous weeks when 
  solar activity was quiet.
  I'm assuming all the drift I'm observing is my cesium standard (5061) and not loran or gps 
  especially because loran is steered by gps and gps is steered by usno-amc.
  Has anyone else noticed any extra cesium drift this week?
  I'm assuming this drift is due to changes in the earth geomagnetic field due to solar activity? 


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