[Ips-wgr] IPS Weekly Geo. Report (21 May 15) issued 0329 UT on 21 May 2015

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 21 MAY 2015, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (12 MAY - 20 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               
 12 May   2233 3133   11  
 13 May   3443 5333   22  
 14 May   2221 1113    6  
 15 May   1223 1122    6  
 16 May   1121 2011    3  
 17 May   1110 0121    2  
 18 May   2222 2024    8  
 19 May   3222 1111    6  
 20 May   2221 2100    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.


Active on 13 May.   Quiet to unsettled on other days.

2. FORECAST (21 MAY - 20 JUNE)
Disturbed Periods: 
8-12 Jun, 14-16 Jun

Best Quiet Periods: 
 21 May to 7 Jun

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 21 May to 7 Jun

Central Australian Regions:
 Disturbed Periods: None
 Best Quiet Periods: 21 May to 7 Jun

Southern Australian Regions:
 Disturbed Periods: 8-12 Jun, 14-16 Jun
 Best Quiet Periods: 21 May to 7 Jun

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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