[Ips-wgr] IPS Weekly Geo. Report (26 July 07)

rwc rwc at ips.gov.au
Thu Jul 26 11:08:48 EST 2007


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 26 JULY 2007, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (17 JULY - 25 JULY)
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 Jul   1112 0111    3     
 18 Jul   2211 0011    3     
 19 Jul   1111 1001    2    
 20 Jul   1234 4313   14    
 21 Jul   3322 3122    9    
 22 Jul   1212 0101    3    
 23 Jul   1111 1112    3    
 24 Jul   1111 1101    2    
 25 Jul   1111 1001    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.


Quiet to unsettled conditions.

2. FORECAST (26 JULY - 25 AUGUST)
Disturbed Periods: 
Active on 7 Aug.

Best Quiet Periods: 
 28 Jul to 29 Jul,  31 Jul to 6 Aug,   9 Aug,  12 Aug to 15 Aug,  18 Aug to
21 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions:
 Disturbed Periods: 26 Jul to 28 Jul.
 Best Quiet Periods: 3 Aug to 5 Aug,  13 Aug to 21 Aug.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods:  29 Jul,  2 Aug to 9 Aug,  13 Aug to 21 Aug.

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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