[Ips-wgr] IPS Weekly Geo. Report (19 February 09)

rwc rwc at ips.gov.au
Thu Feb 19 12:07:25 EST 2009


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 19 FEBRUARY 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (10 FEBRUARY - 18 FEBRUARY)
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               
 10 Feb   2210 1111    3     
 11 Feb   2121 1111    4     
 12 Feb   2212 1211    5    
 13 Feb   2110 1112    3    
 14 Feb   2344 4313   17    
 15 Feb   2333 4212   12    
 16 Feb   2211 1222    5    
 17 Feb   1211 1111    3    
 18 Feb   1211 0112    3    

*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 periods on 14 Feb. Mostly quiet to unsettled on other days.

2. FORECAST (19 FEBRUARY - 21 MARCH)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
21 to 22 Feb, 27 to 28 Feb, 03 Mar, 12 to 14 Mar, 21 Mar.

Best Quiet Periods: 
19 Feb to 20 Feb,  23 to 26 Feb, 01 to 02 Mar, 04 to 11 Mar, 15 to 20 Mar.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 Feb to 15 Mar.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 Feb to 15 Mar.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 Feb to 15 Mar.

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
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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