[Ips-wgr] IPS Weekly Geo. Report (26 March 15) issued 0216 UT on 26 Mar 2015

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 26 MARCH 2015, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (17 MARCH - 25 MARCH)
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               
 17 Mar   2546 6665   56  In the IPS magnetometer data for 17 
                          Mar, a weak (43nT) impulse was observed 
                          at 0445UT.
 18 Mar   3345 5533   28  
 19 Mar   2244 5323   19  
 20 Mar   3243 2223   12  
 21 Mar   2232 2122    7  
 22 Mar   2354 3111   15  
 23 Mar   3323 4322   13  
 24 Mar   1213 3432   11  
 25 Mar   2223 4222   10  In the IPS magnetometer data for 25 
                          Mar, a weak (16nT) impulse was observed 
                          at 1322UT.

*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 18-19 Mar.  Major storm on 17 Mar. Quiet to unsettled on other days.

2. FORECAST (26 MARCH - 25 APRIL)
Disturbed Periods: 
27-30 Mar,  24-25 Apr.

Best Quiet Periods: 
 4-12 Apr

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 
 Disturbed Periods: None
 Best Quiet Periods: 4-12 Apr

Central Australian Regions: 
 Disturbed Periods: 27-30 Mar,  24-25 Apr.
 Best Quiet Periods: 4-12 Apr

Southern Australian Regions: NA
 Disturbed Periods: 27-30 Mar,  24-25 Apr.
 Best Quiet Periods: 4-12 Apr


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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