[Ips-wgr] IPS Weekly Geo. Report (20 September 12) issued 0223 UT on 20 Sep 2012

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 20 SEPTEMBER 2012, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (11 SEPTEMBER - 19 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               
 11 Sep   1000 1101    1  
 12 Sep   1123 2122    6  
 13 Sep   2220 1211    4  
 14 Sep   2110 1212    4  
 15 Sep   2212 1211    5  
 16 Sep   1212 1232    6  
 17 Sep   2211 2112    5  
 18 Sep   2222 2312    7  
 19 Sep   2211 2243    9  

*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 (20 SEPTEMBER - 20 OCTOBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 20-22 Sep,  29 Sep to 5 Oct,  15 Oct.

Best Quiet Periods: 
 23-28 Sep,  6-14 Oct,  16 Oct.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None
 Best Quiet Periods: 23 Sep to 16 Oct.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Sep to 16 Oct.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 24-30 Sep,  4-16 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.

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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