[Ips-wgr] IPS Weekly Geo. Report (13 August 09)

rwc rwc at ips.gov.au
Thu Aug 13 13:03:40 EST 2009


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 13 AUGUST 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (04 AUGUST - 12 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               
 04 Aug   1210 1111    3     
 05 Aug   1222 2101    4     
 06 Aug   2242 2211    8    
 07 Aug   2212 1222    6    
 08 Aug   2210 1111    3    
 09 Aug   2223 2011    6    
 10 Aug   1111 1111    3    
 11 Aug   2121 1211    4    
 12 Aug   1221 2111    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 (13 AUGUST - 12 SEPTEMBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 18 Aug to 19 Aug,   30 Aug,  2 Sep to 3 Sep,   5 Sep.

Best Quiet Periods: 
 13 Aug to 17 Aug,  20 Aug to 29 Aug,  31 Aug to 1 Sep,   4 Sep,  6 Sep to
8 Sep.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 13 Aug to 8 Sep.

Central Australian Regions: 
 Disturbed Periods: Mildly disturbed 18-19 August
 Best Quiet Periods:
  13 Aug to 17 Aug,  20 Aug to 29 Aug,  31 Aug to 1 Sep,   4 Sep,  6 Sep to
  8 Sep.

Southern Australian Regions:
 Disturbed Periods: Disturbed 18-19 August
 Best Quiet Periods:
  13 Aug to 17 Aug,  20 Aug to 29 Aug,  31 Aug to 1 Sep,   4 Sep,  6 Sep to
  8 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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