[Ips-wgr] IPS Weekly Geo. Report (05 May 11)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 05 MAY 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (26 APRIL - 04 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               
 26 Apr   1111 1001    2     
 27 Apr   1111 0111    2     
 28 Apr   1110 0121    2    
 29 Apr   1211 1235   11    
 30 Apr   3334 3233   15    
 01 May   3334 4322   16    
 02 May   2343 2322   12    
 03 May   3323 2222   10    
 04 May   2121 1311    5    

*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.

Isolated minor storm periods late 29 April, isolated active periods
30 April- 2 May and quiet to unsettled at other times.

2. FORECAST (05 MAY - 04 JUNE)
Disturbed Periods: 
9-10 May, 17 May and 27-30 May.

Best Quiet Periods: 
 5-7 May,  11-16 May, 18-25 May and  31 May-3 June.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: 
 Best Quiet Periods: 5 May-4 June.

Central Australian Regions: 
 Mildly disturbed Periods:  9-10 May and 27-31 May.
 Best Quiet Periods: 5-8, 11-26 May and 1-4 June.

Southern Australian Regions:
 Disturbed Periods:  9-10 May and 27-31 May.
 Best Quiet Periods: 5-8, 11-26 May and 1-4 June.

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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