[Ips-wsgr] IPS Weekly Solar and Geophysical Report (12 August 11)

Regional Warning Centre rwc at ips.gov.au
Fri Aug 12 14:30:13 EST 2011 

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 12 AUGUST 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (05 AUGUST - 11 AUGUST)
Date     05    06    07    08    09    10    11
10cm    109   110   105   102    98    90    84
AFr      32    14     6     8     5     8 (  5)
Aaus     14    14     5     9     6     5 (  3)
T        44    55    37    39    40    40    37

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

05 Aug 
Solar:        low
Geomagnetic:  Quiet to Minor Storm 
A weak (22nT) impulse was observed in the IPS magnetometer data at
1902UT on 05 Aug.
Frequencies:  
   Cocos Island Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
      Sporadic-E observed after local dawn.
   Niue Island Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
      Spread-F observed local afternoon, Brisbane, Hobart, Perth. 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.
      Proton event in progress, increased absorption observed.

06 Aug 
Solar:        low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 35% during local night.
      Enhanced by 20% after local dawn with periods of sporadic-E.
   Niue Island Region:
      Variable enhancements/depressions during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Variable enhancements/depressions during local day,
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

07 Aug 
Solar:        low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day with 
      enhancements to 50% 11-13UT,
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 15% during local night.
      Absorption observed Hobart around local dawn.
      Perth enhanced to 50% local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 30% over the UT day.

08 Aug 
Solar:        moderate, with an   M3.5 at 1810UT 
Geomagnetic:  Quiet to Active 

Frequencies:  
   Cocos Island Region:
      Variable enhancements/depressions during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 20% 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):
      Depressed by 30% over the UT day.

09 Aug 
Solar:        high, with an   M2.5 at 0355UT , and an   X7.0 at 0805UT
Geomagnetic:  Quiet to Active 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Niue Island Region:
      Depressed by 20% during local day,
      Depressed by 20% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

10 Aug 
Solar:        low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Depressed by 15% during local day,
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

11 Aug 
Solar:        low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 35% during local night.
   Niue Island Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

 
2. FORECAST (12 AUGUST - 18 AUGUST)
Solar: 
Low

Geomagnetic:  
active on 16 Aug.
quiet to unsettled on other days.

Frequencies:  
briefly depressed after local dawn on 16 Aug
MUFs near predicted monthly values on other days.

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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