[Ips-wgr] IPS Weekly Geo. Report (14 July 11)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 14 JULY 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (05 JULY - 13 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               
 05 Jul   1321 1021    5     
 06 Jul   1222 1112    5     
 07 Jul   2112 1121    4    
 08 Jul   0121 0212    3    
 09 Jul   2312 2312    8    
 10 Jul   2221 1211    5    
 11 Jul   1144 3222   12    A weak (14nT) impulse was observed in the IPS
magnetometer data at 0852UT on 11 Jul.
 12 Jul   3212 3221    8    
 13 Jul   2212 2010    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 Space Environment Research Center, Japan.


Quiet to unsettled conditions.

2. FORECAST (14 JULY - 13 AUGUST)
Disturbed Periods: 
Unsettled to Active on 19-21 Jul.

Best Quiet Periods: 
 15 Jul to 18 Jul,  23 Jul to 27 Jul,  30 Jul to 04 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Southern Australian Regions:
 Disturbed Periods: 19-22 Jul.
 Best Quiet Periods: 15 Jul to 18 Jul,  23 Jul to 27 Jul, 30 Jul to 
 04 Aug.

Central Australian Regions:
 Disturbed Periods: None
 Best Quiet Periods: 15 Jul to 18 Jul, 23 Jul to 07 Aug

Northern Australian Regions:
 Disturbed Periods: None
 Best Quiet Periods: 15 Jul to 18 Jul, 23 Jul to 07 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.

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
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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