[Ips-wgr] IPS Weekly Geo. Report (19 May 11)

rwc rwc at ips.gov.au
Thu May 19 13:10:10 EST 2011


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 19 MAY 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (10 MAY - 18 MAY)
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 May   1132 3322    9     
 11 May   1211 1110    3     
 12 May   1000 0001    0    
 13 May   1111 1101    2    
 14 May   1100 0101    1    
 15 May   2213 2222    7    
 16 May   2233 3122    9    
 17 May   2123 2212    7    
 18 May   1111 1110    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.


Primarly Quiet conditions have been observed during the previous week. 

2. FORECAST (19 MAY - 18 JUNE)
Disturbed Periods: 
27 May to 30 May, 11 Jun to 14 Jun

Best Quiet Periods: 
19 May to 25 May,  2 May to 9 May.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 May to 25 May,  1 Jun to 11 Jun. 

Central Australian Regions:  
 Disturbed Periods: 27 May to 31 May, 12 Jun to 13 Jun.
 Best Quiet Periods: 19 May to 25 May,  1 Jun to 11 Jun. 

Southern Australian Regions:
 Disturbed Periods: 27 May to 31 May,  12 Jun to 14 Jun.
 Best Quiet Periods: 19 May to 25 May,  2 Jun to 10 Jun.

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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