[Ips-wgr] IPS Weekly Geo. Report (28 May 09)

[Regional Warning Centre]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 28 MAY 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (19 MAY - 27 MAY)
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               
 19 May   2211 0011    3     
 20 May   2211 0111    3     
 21 May   1111 1001    2    
 22 May   1112 2221    5    
 23 May   1111 0111    2    
 24 May   1111 0111    2    
 25 May   1110 0011    1    
 26 May   1111 1111    3    
 27 May   1110 0001    1    

*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.

2. FORECAST (28 MAY - 27 JUNE)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 3 Jun to 4 Jun,   10 Jun.

Best Quiet Periods: 
 28 May to 2 Jun,  5 Jun to 9 Jun,  11 Jun to 23 Jun.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 28 May to 23 Jun.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 28 May to 3 Jun,  5 Jun to 23 Jun.

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.

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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
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