[Ips-wgr] IPS Weekly Geo. Report (27 August 09)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 27 AUGUST 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (18 AUGUST - 26 AUGUST)
K indices are in UT (0-24). For conversion to local time:
AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
        Australian Region*              
 Date     K-INDICES    A               
 18 Aug   1211 0111    3     
 19 Aug   1212 3232    8     
 20 Aug   3322 2122    8    
 21 Aug   2232 2212    7    
 22 Aug   1322 2122    7    
 23 Aug   2321 1111    5    
 24 Aug   1211 1111    3    
 25 Aug   1211 1111    3    
 26 Aug   2221 0011    3    

*estimated from real time data

NOTE: Indices may have been generated from data obtained in 
cooperation with the following organisations: Geoscience Australia, 
University of Newcastle Space Physics Group, Australian Government 
Antarctic Division and Space Environment Research Center, Japan.


Quiet to Unsettled conditions observed over the last 7 days.
Quiet conditions expected for 27Aug-30Aug with possible 
Unsettled periods due to coronal hole effects. Mostly Quiet 
conditions expected for 31Aug-01Sep.

2. FORECAST (27 AUGUST - 26 SEPTEMBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
  30 Aug,  2 Sep to 3 Sep,   5 Sep,  15 Sep to 17 Sep.

Best Quiet Periods: 
 27 Aug to 29 Aug,  31 Aug to 1 Sep,   4 Sep,  6 Sep to 14 Sep,  18 Sep to
22 Sep.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions: NA

Southern Australian Regions: NA

Pc3 pulsations are high frequency (10-45 second period) variations 
of the Earths magnetic field. Daily pc3-indices are the daily sum of 
20 minute pc3-indices for that station and have been shown to be well 
correlated with rejection of high resolution aeromagnetic survey 
flight-line data.

PLEASE NOTE:
Geomagnetic activity can frequently be determined by short timescale 
solar events that cannot be forecast a week in advance, particularly
at solar maximum.

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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