[Ips-wgr] IPS Weekly Geo. Report (20 December 07)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 20 DECEMBER 2007, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (11 DECEMBER - 19 DECEMBER)
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               
 11 Dec   3333 3333   15    A weak (18nT) impulse was observed in the IPS
magnetometer data at 0609UT on 11 Dec. 
 12 Dec   3333 2112   10     
 13 Dec   2312 2221    7    
 14 Dec   2222 1121    5    
 15 Dec   2112 1111    4    
 16 Dec   2221 1212    5    
 17 Dec   3444 4332   20    A weak (15nT) impulse was observed in the IPS
magnetometer data at 0253UT on 17 Dec.
 18 Dec   2334 4323   16    
 19 Dec   2232 2222    8    

*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.

Mild increase in activity 17-18 December due to coronal hole,
otherwise mostly quiet to unsettled levels observed.

2. FORECAST (20 DECEMBER - 19 JANUARY)
Disturbed Periods: 12-15 Jan, mostly active levels with minor storm
levels possible.

Best Quiet Periods: 22 Dec to 8 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: NA

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 22 Dec to 2 Jan.

Southern Australian Regions:
 Disturbed Periods:  14-15 Jan.
 Best Quiet Periods: 23 Dec to 2 Jan.

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
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 

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of IPS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
Occasionally IPS sends email promoting IPS products and 
services to its mailing list customers. If you do not wish to 
receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"