[Ips-wsgr] IPS Weekly Solar and Geophysical Report (24 February 06)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 24 FEBRUARY 2006, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (17 FEBRUARY - 23 FEBRUARY)
Date     17    18    19    20    21    22    23
10cm     79    79    77    76    76    76    75
AFr       2     2     5     9    15    11 (  8)
Aaus      5     4    10    16    15    13 (  5)
T        24    22    29    34    18    10     9

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian Region.
Frequencies:  Australian Ionospheric F2 critical frequencies

17 Feb 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
     Near predicted monthly values.
  Northern Australian Region:
     Depressed by 15% during local day,
     Enhanced by 35% during local night.
  Southern Australian and New Zealand Region:
     Near predicted monthly values.
  Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Near predicted monthly values over the UT day.

18 Feb 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
     Mostly near predicted monthly values.
  Northern Australian Region:
     Near predicted monthly values during local day.
     Enhanced by 25% during local night.
  Southern Australian and New Zealand Region:
     Near predicted monthly values.
  Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Near predicted monthly values over the UT day.

19 Feb 
Solar:        Very low
Geomagnetic:  Quiet to active 
Frequencies:  
   Equatorial PNG/Niue Region:
     Near predicted monthly values.
  Northern Australian Region:
     Near predicted monthly values during local day.
     Enhanced by 20% during local night.
  Southern Australian and New Zealand Region:
     Near predicted monthly values.
  Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Near predicted monthly values over the UT day.

20 Feb 
Solar:        Very low
Geomagnetic:  Quiet to active 
Frequencies:  
   Equatorial PNG/Niue Region:
     Near predicted monthly values during local day.
     Enhanced by 20% during local night.
  Northern Australian Region:
     Near predicted monthly values during local day.
     Enhanced by 30% during local night.
  Southern Australian and New Zealand Region:
     Near predicted monthly values.
  Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Near predicted monthly values over the UT day.

21 Feb 
Solar:        Very low
Geomagnetic:  Quiet to active 
Frequencies:  
   Equatorial PNG/Niue Region:
     Near predicted monthly values during local day.
     Enhanced by 20% during local night.
     Enhanced by 30% after local dawn.
  Northern Australian Region:
     Near predicted monthly values during local day.
     Enhanced by 15% during local night.
  Southern Australian and New Zealand Region:
     Mostly near predicted monthly values.
     Depressed by 25% after local dawn.
  Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Near predicted monthly values over the UT day.

22 Feb 
Solar:        Very low
Geomagnetic:  Quiet to active 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Enhanced to 30% 14-20
      UT at Vanimo and enhanced up to 40% at Niue 00-07 UT.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressed to 25% at
      Mundaring, Hobart and Christchurch mostly during
      night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with depressions to 25%
      mostly between 00-09 UT.

23 Feb 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values to 40% enhanced at times
      at Vanimo. Near predicted values at Port Moresby. Near
      predicted values to 30% depressed 00-04, 13, 14 UT at
      Niue. Sporadic E observed 18-21 UT at Vanimo and
      Niue.
   Northern Australian Region:
      Near predicted monthly values to 25% depressed from
      02-05 UT at Darwin and Townsville. Near predicted
      values at other stations. Sporadic E observed
      at times throughout the 24 hours.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 20%
      observed at Mundaring 14-18 UT and at Hobart 01-09 UT.
      Sporadic E observed during night hours. Spread F
      observed at Hobart 10-19 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

 
2. FORECAST (24 FEBRUARY - 02 MARCH)
Solar: 
Very low

Geomagnetic:  
Isolated active periods 24 and 25 Feb. Quiet to unsettled
on other days.

Frequencies:  
Depressions to 30% on 24 and 25 Feb mostly at higher latitudes.
Frequencies expected to be mostly near predicted monthly values
at other latitudes on those days. For remainder of week expect
near predicted monthly values. Sporadic E likely during evening
and night hours which may disrupt F region communications at times.

For an explanation of some of the terms in this report, goto
http://www.ips.gov.au/1/2/1.

IPS Radio and Space Services        email: asfc at ips.gov.au
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

IMPORTANT: This e-mail, including any attachments, may contain,confidential
or copyright information.  The views expressed in this message are those of
the individual sender, unless specifically stated to be the views of IPS.
If you are not the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments. Occasionally IPS sends 
email promoting IPS products and services to its mailing list customers. 
If you do not wish to receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"