[Ips-wgr] IPS Weekly Geo. Report (12 May 11)

rwc rwc at ips.gov.au
Thu May 12 12:13:13 EST 2011


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

1. SUMMARY (03 MAY - 11 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               
 03 May   3323 2222   10     
 04 May   2121 1311    5     
 05 May   2221 2121    5    
 06 May   1111 0001    1    
 07 May   1100 2321    4    
 08 May   1000 1001    1    
 09 May   1110 0101    1    
 10 May   1132 3322    9    
 11 May   1211 1110    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.

2. FORECAST (12 MAY - 11 JUNE)
Disturbed Periods: 
Quiet to Unsettled 12-13 May
Unsettled to Active 14-16, 19-23, 26-30 May

Best Quiet Periods: 
 18 May, 24-25 May, 31 May to 5 Jun, 7-10 Jun.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions: NA

Southern Australian Regions:
 Disturbed Periods: 30 May to 31 May.
 Best Quiet Periods: 12 May to 25 May,  2 Jun to 7 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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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