[Ips-wsgr] IPS Weekly Solar and Geophysical Report (11 April 08)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 11 APRIL 2008, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (04 APRIL - 10 APRIL)
Date     04    05    06    07    08    09    10
10cm     73    71    69    69    70    68    68
AFr       8     9    11     9     6     9 (  7)
Aaus      9    11    12    10     8    10 ( 10)
T        19    24    22    14    12     5     6

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

04 Apr 
Solar:        Very low
Geomagnetic:  Quiet to unsettled 

Frequencies:  
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values. Enhanced to 30% during
      local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhanced to 30% during
      local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

05 Apr 
Solar:        Very low
Geomagnetic:  Mostly quiet to unsettled with active periods at 
              some stations and storm periods at high latitudes. 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Variable conditions
      during local night.
   Northern Australian Region:
      Near predicted monthly values. Enhanced to 20% during
      local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

06 Apr 
Solar:        Very low
Geomagnetic:  Quiet to active 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Variable conditions
      during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhanced to 20% after
      local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values to 30% depressed
      at times.

07 Apr 
Solar:        Very low
Geomagnetic:  Mostly quiet to unsettled. Active to minor storm 
              levels observed at high latitudes. 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Depressions to
      30% 12-20 UT.
   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 to 30% depressed.

08 Apr 
Solar:        Very low
Geomagnetic:  Mostly quiet to unsettled. Active to minor storm 
              levels observed at high latitudes. 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Enhancements to
      60% 10-15 UT at Vanimo. Depressions to 30% 00,
      05-07 UT at Niue.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to
      30% at Canberra/Sydney 11-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to
      30% mostly during night hours.

09 Apr 
Solar:        Very low
Geomagnetic:  Mostly quiet to unsettled. Active to minor storm 
              levels observed at high latitudes. 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Depressions to 60% at
      Vanimo 12-20 UT. Night spread F and afternoon sporadic
      E observed at Niue.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 30%
      observed at Darwin and Townsville, 01-05 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Night spread F observed
      at Hobart and Learmonth.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed. Spread
      F observed.

10 Apr 
Solar:        Very low
Geomagnetic:  Mostly quiet to unsettled. Periods of activity 
              observed at high latitudes. 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values. At Vanimo, MUFs were
      depressed 25% at 02 UT and enhanced to 30% 10-20 UT.
      At Niue, depressions to 40% were observed 00-01 and
      05-06 UT; some night spread F observed.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      observed at Darwin and Townsville 00-05 UT and Darwin
      10-12 UT. Some night spread F observed at Darwin and
      Brisbane.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 30%
      observed at Sydney and Canberra 14-20 UT. Night spread
      F observed at Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed. Spread
      F observed.

2. FORECAST (11 APRIL - 17 APRIL)
Solar: Low

Geomagnetic: Quiet to unsettled conditions.

Frequencies: Mostly near predicted monthly values.

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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