[Ips-wgr] IPS Weekly Geo. Report (29 July 10)

rwc rwc at ips.gov.au
Thu Jul 29 12:03:08 EST 2010


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 29 JULY 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (20 JULY - 28 JULY)
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               
 20 Jul   2121 1111    4     
 21 Jul   2211 1111    4     
 22 Jul   1112 1111    3    
 23 Jul   1232 1222    7    
 24 Jul   2110 1221    4    
 25 Jul   2221 2221    6    
 26 Jul   2221 0112    4    
 27 Jul   2333 3332   13    
 28 Jul   3233 3222   11    

*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 over the last 7 days with occasional 
Active periods for high latitudes due to coronal hole effects. 
Mostly Quiet conditions expected for the next week with minimal 
coronal hole influenced geomagnetic activity.

2. FORECAST (29 JULY - 28 AUGUST)
Disturbed Periods: 
Active on 23 Aug.

Best Quiet Periods: 
 30 Jul to 9 Aug,  12 Aug to 18 Aug,  20 Aug to 22 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 29 Jul to 23 Aug.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 29 Jul to 24 Aug.

Southern Australian Regions:
 Disturbed Periods: 23 Aug to 24 Aug.
 Best Quiet Periods: 29 Jul to 21 Aug.

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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