[Ips-wgr] IPS Weekly Geo. Report (18 May 06)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 18 MAY 2006, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (09 MAY - 17 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               
 09 May   2111 0111    3     
 10 May   1111 1112    3     
 11 May   2334 3232   13    
 12 May   3332 3222   11    
 13 May   2223 2211    7    
 14 May   2322 1111    6    
 15 May   1112 1111    3    
 16 May   1110 1111    2    
 17 May   1101 1211    3    

*estimated from real time data

A weak (14nT) impulse was observed in the IPS magnetometer data
at 0529UT on 11 May.

Quiet to Unsettled conditions observed for this week. No major
solar flare activity. Elevated conditions on 11May and 12May
due to coronal hole effects.

2. FORECAST (18 MAY - 17 JUNE)
Disturbed Periods: 
active 7 Jun to 8 Jun.

Best Quiet Periods: 
 21 May to 24 May,  26 May to 30 May,  5 Jun to 6 Jun,  11 Jun to 13 Jun.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 17 May to 7 Jun,  9 Jun to 12 Jun.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 16 May to 30 May,  3 Jun to 5 Jun.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods:  15 May,  19 May to 31 May,   4 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.

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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