[Ips-wgr] IPS Weekly Geo. Report (07 April 11)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 07 APRIL 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (29 MARCH - 06 APRIL)
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               
 29 Mar   1101 0202    2     
 30 Mar   4311 1001    6     
 31 Mar   1112 1111    3    
 01 Apr   1122 2333    9    
 02 Apr   3233 2133   11    
 03 Apr   3223 3233   12    
 04 Apr   2312 1201    5    
 05 Apr   2211 0022    4    
 06 Apr   3215 4433   19    

*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.


Active to minor storm levels on 6 Apri, otherwise mostly
quiet to unsettled on other days.

2. FORECAST (07 APRIL - 07 MAY)
Disturbed Periods: No strong recurrent patterns, however mild
activity may be experienced on 9-11 Apr, and 28 Apr to 2 May.

Best Quiet Periods: 14-26 April.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: 
 Disturbed Periods: None.
 Best Quiet Periods: 7 April to 7 May.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 12-27 April.

Southern Australian Regions:
 Disturbed Periods: 28 April to 2 May.
 Best Quiet Periods: 12-27 April.

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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