[Ips-wsgr] IPS Weekly Solar and Geophysical Report (23 March 07)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 23 MARCH 2007, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (16 MARCH - 22 MARCH)
Date     16    17    18    19    20    21    22
10cm     69    69    71    70    73    73    73
AFr      11     8     1     1     1     1 (  3)
Aaus      6     7     4     1     3     3 (  3)
T         6    14     2     5    10     8    15

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

16 Mar 
Solar:        very low
Geomagnetic:  Quiet to unsettled 
Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly 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.

17 Mar 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 15% 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.

18 Mar 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values with 15-40% depressions
      05-15 UT.
   Northern Australian Region:
      Near predicted monthly values with occasional
      depressions to 25%.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 25%, mostly between 00-06 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. 40% depressed at Casey
      13-14 UT.

19 Mar 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed by 25% during local night.
      Near predicted monthly values during local day.
   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/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Mar 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values to 15% depressed.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      observed at Darwin 13-16 UT. Spread F observed at
      Darwin 14-17 UT.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with 25% depressions
      02-06 UT observed at Brisbane and Norfolk Island.
      Spread F observed at Hobart 10-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Spread F observed much
      of the night.

21 Mar 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day,
      Depressed by 35% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

22 Mar 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue 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):
      Enhanced by 15% over the UT day.

 
2. FORECAST (23 MARCH - 29 MARCH)
Solar: 
Very low. 

Geomagnetic:  
Mostly quiet to unsettled conditions. Isolated active periods
possible on 24 and 25 March. 

Frequencies:  
MUFs mostly near predicted monthly values. Minor to mild depressions
in MUFs possible at high latitues on 24 and 25 March.

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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