[Ips-wgr] IPS Weekly Geo. Report (18 February 10)

rwc rwc at ips.gov.au
Thu Feb 18 12:54:50 EST 2010


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 18 FEBRUARY 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (09 FEBRUARY - 17 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               
 09 Feb   1112 1111    3     
 10 Feb   2222 1122    6     
 11 Feb   3222 3212    8    
 12 Feb   2221 2112    5    
 13 Feb   2210 1122    4    
 14 Feb   2111 3012    5    
 15 Feb   3222 2243   11    
 16 Feb   3222 1223    8    
 17 Feb   2111 1112    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. Some active periods observed on 
15 and 16 February due to a weak CME and a recurrent pattern of 
strengthening in the solar wind stream. 

2. FORECAST (18 FEBRUARY - 20 MARCH)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 1 Mar to 2 Mar,   15 Mar.

Best Quiet Periods: 
 19 Feb to 28 Feb,  3 Mar to 14 Mar,   16 Mar.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 18 Feb to 14 Mar.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 18 Feb to 14 Mar.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 18 Feb to 14 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
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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