[Ips-wgr] IPS Weekly Geo. Report (21 December 06)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 21 DECEMBER 2006, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (12 DECEMBER - 20 DECEMBER)
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 Dec   3343 4433   19     
 13 Dec   4221 1122    8    A weak (15nT) impulse was observed in the IPS
magnetometer data at 0222UT on 13 Dec. 
 14 Dec   2222 5546   28    A weak (46nT) impulse was observed in the IPS
magnetometer data at 1414UT on 14 Dec.
 15 Dec   6555 6322   41    
 16 Dec   2332 2333   12    
 17 Dec   3221 1122    6    
 18 Dec   2223 2433   12    A weak (13nT) impulse was observed in the IPS
magnetometer data at 1018UT on 18 Dec, and a weak (21nT) impulse was
observed at 1639UT on 18 Dec.
 19 Dec   2334 3222   12    
 20 Dec   3333 4333   16    

*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 12 Dec, active on 14 Dec, active on 20 Dec.
minor storm on 15 Dec.
quiet to unsettled on other days.

2. FORECAST (21 DECEMBER - 20 JANUARY)
Disturbed Periods: 
active 21 Dec to 22 Dec, active 2 Jan to 4 Jan.

Best Quiet Periods: 
 24 Dec to 26 Dec,  28 Dec to 1 Jan,  5 Jan to 7 Jan,   9 Jan,   11 Jan,  
13 Jan,   15 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Dec to 2 Jan,  11 Jan to 14 Jan.

Central Australian Regions:
 Disturbed Periods:  5 Jan,  7 Jan to 10 Jan,   14 Jan.
 Best Quiet Periods: 24 Dec to 30 Dec.

Southern Australian Regions:
 Disturbed Periods: 8 Jan to 10 Jan,   14 Jan.
 Best Quiet Periods: 24 Dec to 30 Dec.

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.

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