[Ips-wsgr] IPS Weekly Solar and Geophysical Report (25 March 11)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 25 MARCH 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (18 MARCH - 24 MARCH)
Date     18    19    20    21    22    23    24
10cm     88    89    92   101   100   105   108
AFr       2     2     4     4     5     9 (  3)
Aaus      2     5     6     3     5    10 (  4)
T        48    56    67    47    47    57    62

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian region.
Frequencies:  Australian ionospheric F2 critical frequencies

18 Mar 
Solar:        Very Low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   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 Mar 
Solar:        Very Low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Enhanced by 40% during local day,
      Enhanced by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Mar 
Solar:        Very Low
Geomagnetic:  Quiet to unsettled 

Frequencies:  
Near predicted monthly values

21 Mar 
Solar:        Low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Enhanced by 50% during local night.
      Near predicted monthly values during local day.
   Niue Island Region:
      Enhanced by 20% during local day,
      Near predicted monthly values 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/Davis/Mawson):
      Depressed by 20% over the UT day.
      Proton event in progress, increased absorption observed.

22 Mar 
Solar:        Low
Geomagnetic:  Mostly quiet with isolated unsettled periods. 

Frequencies:  
   Cocos Island Region:
      No data available during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

23 Mar 
Solar:        Moderate, with an   M1.4 at 0218UT 
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

24 Mar 
Solar:        Moderate, with an   M1.0 at 1207UT 
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Enhanced by 40% during local day,
      Enhanced by 65% during local night.
   Niue Island Region:
      Near predicted monthly values.
   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/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (25 MARCH - 31 MARCH)
Solar: Low to Moderate activity for the forecast week 
with possible M-class events from current active region
1176 and the return of old active region 1164.

Geomagnetic: Quiet to Unsettled conditions expected.
Possible Unsettled to Active periods due to minor 
recurrent coronal hole effects in the latter half of 
the forecast week. 

Frequencies: Periods of enhanced MUFs ~20% for low 
latitudes with otherwise near predicted monthly values.
Near predicted monthly values for mid to high latitudes.

For an explanation of some of the terms in this report, go to
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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