[Ips-wgr] IPS Weekly Geo. Report (11 April 13) issued 0243 UT on 11 Apr 2013

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 11 APRIL 2013, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (02 APRIL - 10 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               
 02 Apr   1110 0112    2  
 03 Apr   1101 1111    2  
 04 Apr   2211 2111    4  
 05 Apr   1201 1001    2  
 06 Apr   2211 1111    4  
 07 Apr   2212 2211    5  
 08 Apr   1111 1111    3  
 09 Apr   1211 1111    3  
 10 Apr   1221 1112    4  

*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 International Center for Space Weather 
Science and Education, Japan.


Quiet conditions.

2. FORECAST (11 APRIL - 11 MAY)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 16-17 Apr,  19 Apr,  23-26 Apr.

Best Quiet Periods: 
 11-15 Apr,  18 Apr,  20-22 Apr,  27 Apr to 7 May.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 11 Apr to 7 May.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 12 Apr to 7 May.

Southern Australian Regions:
 Disturbed Periods: 13 Apr.
 Best Quiet Periods: 12 Apr,  14-23 Apr,  25 Apr to 7 May.


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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