[Ips-wsgr] IPS Weekly Solar and Geophysical Report (28 July 06)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 28 JULY 2006, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (21 JULY - 27 JULY)
Date     21    22    23    24    25    26    27
10cm     73    74    77    77    76    75    74
AFr       1     3     4     7     5     5 (  5)
Aaus      1     1     2     4     4     2 (  4)
T        21    20    26    25    28    25    21

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

21 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed 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 during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

22 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed 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 during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

23 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed 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:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

24 Jul 
Solar:        low
Geomagnetic:  Quiet to unsettled 

Frequencies:  
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values during local
      day,
      Depressed by 40% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

25 Jul 
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 during local day,
      Enhanced greater than 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

26 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
about 20% above predicted monthly values

27 Jul 
Solar:        very low
Geomagnetic:  Quiet 
A weak (12nT) impulse was observed in the IPS magnetometer data at 1355UT on 27
Jul.
Frequencies:  
about 10% above predicted monthly values

 
2. FORECAST (28 JULY - 03 AUGUST)
Solar: 
Low

Geomagnetic:  
active 31 Jul to 1 Aug.
quiet to unsettled on other days.

Frequencies:  
briefly depressed after local dawn 31 Jul to 1 Aug
MUFs near predicted monthly values on other days.

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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