[Ips-wgr] IPS Weekly Geo. Report (09 April 09)
rwc
rwc at ips.gov.au
Thu Apr 9 13:33:54 EST 2009
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 09 APRIL 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (31 MARCH - 08 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
31 Mar 2211 3011 5
01 Apr 2111 0012 3
02 Apr 1111 1111 3
03 Apr 1110 1111 2
04 Apr 1111 2001 2
05 Apr 2222 1111 5
06 Apr 1211 1211 4
07 Apr 2121 1111 4
08 Apr 1221 1222 5
*estimated from real time data
Quiet conditions observed entire period.
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.
2. FORECAST (09 APRIL - 09 MAY)
Disturbed Periods:
No strong recurrent patterns, however mild activity may be experienced on:
9-10 April.
Best Quiet Periods:
13 April to 5 May.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 9 Apr to 9 May.
Central Australian Regions:
Disturbed Periods: 9-10 April.
Best Quiet Periods: 13 Apr to 5 May.
Southern Australian Regions:
Disturbed Periods: 9-11 April.
Best Quiet Periods: 13 Apr to 5 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.
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
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Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
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