[Ips-wgr] IPS Weekly Geo. Report (17 April 08)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 17 APRIL 2008, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (08 APRIL - 16 APRIL)
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               
 08 Apr   2213 3222    8     
 09 Apr   3233 3212   10     
 10 Apr   3233 3212   10    
 11 Apr   2212 2212    6    
 12 Apr   2332 3232   11    
 13 Apr   2232 3322   10    
 14 Apr   2211 0111    3    
 15 Apr   2211 2223    7    
 16 Apr   2233 4332    13

A weak (13nT) impulse was observed in the IPS magnetometer data at
1214UT on 12 Apr

*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 expected for the forecast period. Chance
of Active conditions on 22Apr-23Apr due to recurrent coronal hole 
activity.


2. FORECAST (17 APRIL - 17 MAY)
Disturbed Periods: 
Active 22 Apr to 24 Apr, Active on 2 May.

Best Quiet Periods: 
 18 Apr to 21 Apr,  27 Apr to 30 Apr,  7 May to 8 May,  10 May to 13 May.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 20 Apr to 21 Apr,  26 Apr to 30 Apr,  8 May to 10 May.

Southern Australian Regions:
 Disturbed Periods: 4 May to 5 May.
 Best Quiet Periods: 18 Apr to 20 Apr,  26 Apr to 30 Apr,  8 May to 10 May.

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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