[Ips-wgr] IPS Weekly Geo. Report (17 September 09)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 17 SEPTEMBER 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (08 SEPTEMBER - 16 SEPTEMBER)
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               
 08 Sep   1111 0112    3     
 09 Sep   1210 1011    2     
 10 Sep   1111 1101    2    
 11 Sep   1211 2221    5    
 12 Sep   1111 1111    3    
 13 Sep   1211 1222    5    
 14 Sep   3111 1212    5    
 15 Sep   1321 2212    6    
 16 Sep   2232 1122    7    

*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 with unsettled periods 14 to 16 September.

2. FORECAST (17 SEPTEMBER - 17 OCTOBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 26 Sep, 13 Oct.

Best Quiet Periods: 
 19 Sep to 25 Sep, 27 Sep to 12 Oct.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 Sep to 12 Oct.

Central Australian Regions:
 Disturbed Periods: 13 to 15 Oct.
 Best Quiet Periods: 19 Sep to 12 Oct.

Southern Australian Regions:
 Disturbed Periods: 13 to 15 Oct.
 Best Quiet Periods: 19 Sep to 12 Oct.

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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