[Ips-wgr] IPS Weekly Geo. Report (23 December 10)

rwc rwc at ips.gov.au
Thu Dec 23 13:38:54 EST 2010


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 23 DECEMBER 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (14 DECEMBER - 22 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               
 14 Dec   2323 4333   14     
 15 Dec   3222 2212    7     
 16 Dec   2222 1212    6    
 17 Dec   2211 1221    5    
 18 Dec   2221 2111    5    
 19 Dec   2211 1112    4    
 20 Dec   3332 3122   10    
 21 Dec   2111 1202    4    
 22 Dec   1111 1101    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.

Quiet to unsettled conditions.

2. FORECAST (23 DECEMBER - 22 JANUARY)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
  24 Dec,  10 Jan to 11 Jan,   16 Jan.

Best Quiet Periods: 
  23 Dec,  25 Dec to 9 Jan,  12 Jan to 15 Jan,  17 Jan to 18 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions: 
 Disturbed Periods: None.
 Expect Quiet period for the next 30 days.
Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Dec to 10 Jan.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Dec to 11 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.

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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