[Ips-wgr] IPS Weekly Geo. Report (21 June 12) issued 0316 UT on 21 Jun 2012

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 21 JUNE 2012, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (12 JUNE - 20 JUNE)
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 Jun   3211 1111    5  
 13 Jun   2222 0001    3  
 14 Jun   1111 0011    2  
 15 Jun   1100 0001    1  
 16 Jun   1113 3335   14  In the IPS magnetometer data for 16 
                          Jun, a weak (17nT) impulse was observed 
                          at 2115UT.
 17 Jun   3335 4432   21  
 18 Jun   2432 2211    9  
 19 Jun   1110 0001    1  
 20 Jun   1210 0011    2  

*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 on 17 Jun.   Quiet to unsettled on other days.

2. FORECAST (21 JUNE - 21 JULY)
Disturbed Periods: 
30 Jun to 3 Jul.

Best Quiet Periods: 
 21-28 Jun,  5-15 Jul, 18-21 Jul.

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

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 21-28 Jun,  5-15 Jul, 18-21 Jul.

Southern Australian Regions:
 Disturbed Periods: 30 Jun to 3 Jul.
 Best Quiet Periods: 21-28 Jun,  5-15 Jul, 18-21 Jul.


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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