[Ips-wgr] IPS Weekly Geo. Report (02 May 13) issued 0215 UT on 02 May 2013

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 02 MAY 2013, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (23 APRIL - 01 MAY)
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               
 23 Apr   1221 2222    6  
 24 Apr   3224 3232   12  
 25 Apr   2212 2222    6  
 26 Apr   2333 3322   12  
 27 Apr   2211 2211    5  
 28 Apr   1111 3122    5  
 29 Apr   2111 2112    4  
 30 Apr   2112 2112    5  
 01 May   2334 5343   21  

*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.


Active on 1 May.   Quiet to unsettled on other days.

2. FORECAST (02 MAY - 01 JUNE)
Disturbed Periods: 
21 May.

Best Quiet Periods: 
 3-10 May,  12-20 May,  24-28 May.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: NA

Central Australian Regions:
 Mildly Disturbed Periods: 23-May
 Best Quiet Periods: 2-6 May,  8-9 May,  11-28 May.

Southern Australian Regions:
 Disturbed Periods: 23-May.
 Best Quiet Periods: 2-9 May,  11-22 May,  24-28 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 
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