[Ips-wgr] IPS Weekly Geo. Report (04 August 11)

rwc rwc at ips.gov.au
Thu Aug 4 12:05:49 EST 2011


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 04 AUGUST 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (26 JULY - 03 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               
 26 Jul   2221 1021    4     
 27 Jul   1110 0012    2     
 28 Jul   1110 0001    1    
 29 Jul   1211 2201    4    
 30 Jul   3242 3333   14    
 31 Jul   3232 1212    8    
 01 Aug   2221 1113    6    
 02 Aug   1121 0111    3    
 03 Aug   1210 0001    2    

*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.


Mostly quiet to unsettled conditions. Active periods observed on 30 July. 

2. FORECAST (04 AUGUST - 03 SEPTEMBER)
Disturbed Periods: 
Unsettled on 4 Aug, active on 5 Aug, unsettled on 6 Aug, active on 16 Aug.

Best Quiet Periods: 
 11 Aug to 13 Aug,   20 Aug,  22 Aug to 25 Aug,  29 Aug to 30 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Southern Australian Regions:
 Disturbed Periods: 16 Aug to 17 Aug.
 Best Quiet Periods: 4 Aug to 5 Aug,  10 Aug to 14 Aug.

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 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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