[Ips-wgr] IPS Weekly Geo. Report (27 October 11) issued 0204 UT on 27 Oct 2011

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 27 OCTOBER 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (18 OCTOBER - 26 OCTOBER)
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               
 18 Oct   1110 0112    2     
 19 Oct   2212 1002    4     
 20 Oct   2210 0122    4    
 21 Oct   2210 0011    2    
 22 Oct   1110 0001    1    
 23 Oct   1111 1102    3    
 24 Oct   2121 0145   12
 25 Oct   5433 3212   17    
 26 Oct   2221 0112    4    

*estimated from real time data

A weak (26nT) impulse was observed in the IPS magnetometer data at 
1831UT on 24 Oct.

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.


active to minor storm from late 24-Oct to early 25-Oct.
quiet to unsettled on other days.

2. FORECAST (27 OCTOBER - 26 NOVEMBER)
Disturbed Periods: 
  Unsettled on 28-29 Oct,  5-6 Nov,  24-25 Nov.

Best Quiet Periods: 
  27 Oct,  30 Oct to 4 Nov,  7 Nov to 23 Nov.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 30 Oct to 22 Nov.

Southern Australian Regions:
 Disturbed Periods:  28-29 Oct, 5-6 Nov, 24-25 Nov.
 Best Quiet Periods: 30 Oct to 4 Nov, 7-23 Nov.

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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