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

rwc rwc at ips.gov.au
Thu Mar 19 13:08:24 EST 2009


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

1. SUMMARY (10 MARCH - 18 MARCH)
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 Mar   1110 1211    3     
 11 Mar   2221 1012    4     
 12 Mar   3222 1113    7    
 13 Mar   3333 3322   13    
 14 Mar   2233 1322    9    
 15 Mar   2232 2102    6    
 16 Mar   2122 1221    5    
 17 Mar   1211 1212    4    
 18 Mar   1111 2001    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 (19 MARCH - 18 APRIL)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
  26 Mar,   4 Apr,  9 Apr to 10 Apr.

Best Quiet Periods: 
 19 Mar to 25 Mar,  27 Mar to 3 Apr,  5 Apr to 8 Apr,  11 Apr to 14 Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: 11 Apr - Mildly disturbed 

Central Australian Regions: 19-20 Mar,26-27 Mar,9-10 Apr - Mildly disturbed, 
11 Apr - Disturbed.

Southern Australian Regions: 19-20 Mar, 26-27 Mar, 9-11 Apr - Disturbed 


Best Quiet periods: 19-25 Mar, 28 Mar - 8 Apr, 12-14 Apr

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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