[Ips-wgr] IPS Weekly Geo. Report (18 August 11)

rwc rwc at ips.gov.au
Thu Aug 18 14:25:32 EST 2011


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 18 AUGUST 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (09 AUGUST - 17 AUGUST)
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               
 09 Aug   2332 0012    6     
 10 Aug   1222 2111    5     
 11 Aug   1221 0012    3    
 12 Aug   1122 1111    4    
 13 Aug   1210 1012    3    
 14 Aug   3222 1322    8    
 15 Aug   3222 2232    9    
 16 Aug   1333 3111    9    
 17 Aug   2221 2011    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.

Mostly Quiet to unsettled conditions observed.

2. FORECAST (18 AUGUST - 17 SEPTEMBER)
Disturbed Periods: 27-28 Aug, 2-6 & 11-15 Sept.

Best Quiet Periods: 20-26 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 18 Aug to 17 Sep.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 Aug to 12 Sep.

Southern Australian Regions:
 Disturbed Periods: 1-6 Sept.
 Best Quiet Periods: 19 Aug to 26 Aug, 7 Sep to 12 Sep.

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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