[Ips-wsgr] IPS Weekly Solar and Geophysical Report (22 December 06)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 22 DECEMBER 2006, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (15 DECEMBER - 21 DECEMBER)
Date     15    16    17    18    19    20    21
10cm     87    82    81    75    73    72    72
AFr      48    10     3     7     9    16  ( 15)
Aaus     41    12     6    12    12    16  ( 13)
T        -7   -10     8   -16   -12    -9   -14

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

15 Dec 
Solar:        Moderate, with an   M1.4 at 2300UT 
Geomagnetic:  Severe Storm to Quiet 

Frequencies:  
5 to 40% below predicted monthly values

16 Dec 
Solar:        Very low
Geomagnetic:  Unsettled 

Frequencies:  
About 20% below predicted monthly values

17 Dec 
Solar:        Low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
Slightly below predicted monthly values

18 Dec 
Solar:        Very low
Geomagnetic:  Quiet to Active 
A weak (13nT) impulse was observed in the IPS magnetometer data at
1018UT on 18 Dec, and a weak (21nT) impulse was observed at 1639UT on
18 Dec.
Frequencies:  
15 to 30% below predicted monthly values

19 Dec 
Solar:        Very low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Dec 
Solar:        Very low
Geomagnetic:  Unsettled to Active 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Extended periods of disturbance over the UT day.

21 Dec 
Solar:        Very low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Extended periods of disturbance over the UT day.

 
2. FORECAST (22 DECEMBER - 28 DECEMBER)
Solar: 
Low

Geomagnetic:  
Quiet to unsettled conditions. Chance active periods early 
in week.

Frequencies:  
MUFs depressed 10-20% early in week, then near predicted 
monthly values.

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 

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