[Ips-wsgr] IPS Weekly Solar and Geophysical Report (30 September 05)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 30 SEPTEMBER 2005, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (23 SEPTEMBER - 29 SEPTEMBER)
Date     23    24    25    26    27    28    29
10cm     83    81    81    81    77    75    74
AFr       5     2     3     9    10    12   ( 6)
Aaus      4     3     6    12    11    10   ( 7)
T        38    29    40    47    36    28    18

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

23 Sep 
Solar:        Low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
     Near predicted monthly values during local day,
     No data available during local night.
  Northern Australian Region:
     Near predicted monthly values.
  Southern Australian and New Zealand Region:
     Near predicted monthly values during local day,
     Enhanced by 20% during local night.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

24 Sep 
Solar:        Very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
     Near predicted monthly values during local day,
     No data available during local night.
  Northern Australian Region:
     Near predicted monthly values.
  Southern Australian and New Zealand Region:
     Mostly near predicted monthly values,
  Antarctic Region (Casey/Scott Base):
     Enhanced by 15% over the UT day.

25 Sep 
Solar:        Very low
Geomagnetic:  Quiet 

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

26 Sep 
Solar:        Very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG Region:
     Enhanced by 15% during local day,
     No data available during local night.
  Northern Australian Region:
     Near predicted monthly values during local day,
     Enhanced by 15% during local night.
  Southern Australian and New Zealand Region:
     Near predicted monthly values during local day,
     Enhanced by 20% during local night.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

27 Sep 
Solar:        Very low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Equatorial PNG Region:
      Enhancements up to 50% noted, otherwise
      mostly near predicted monthly values,
   Northern Australian Region:
      Darwin showed Sporadic E blanketing at 06UT,
      otherwise, near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values, with spread F
      noted during local night, 
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values,
      with spread F noted during local night.
      Mawson showed Sporadic E blanketing 08-19UT.

28 Sep 
Solar:        Very low
Geomagnetic:  Quiet to Unsettled 
A weak (14nT) impulse was observed in the IPS magnetometer data at 1703UT on 28
Sep.
Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

29 Sep 
Solar:        Very low
Geomagnetic:  Quiet to Unsettled 

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

 
2. FORECAST (30 SEPTEMBER - 06 OCTOBER)
Solar: 
Low

Geomagnetic:  
Chance active intervals on 06 Oct.
Quiet to unsettled on other days.

Frequencies:  
Briefly depressed after local dawn on 06 Oct
MUFs near predicted monthly values on other days.

PLEASE NOTE: 
At this time of the solar cycle, space weather conditions
are frequently determined by short timescale events, not
able to be forecasted a week in advance.

For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Gloassary on Solar Terrestrial Terms.


IPS Radio and Space Services        email: asfc at ips.gov.au
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