[Ips-wgr] IPS Weekly Geo. Report (26 March 09)
rwc at ips.gov.au
Thu Mar 26 12:41:36 EST 2009
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 26 MARCH 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (17 MARCH - 25 MARCH)
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
Date K-INDICES A
17 Mar 1211 1212 4
18 Mar 1111 2001 2
19 Mar 1221 3012 5
20 Mar 2121 1212 5
21 Mar 1333 3122 10
22 Mar 2221 0112 4
23 Mar 2210 0112 3
24 Mar 2222 3312 8
25 Mar 2232 1112 6
*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 (26 MARCH - 25 APRIL)
No strong recurrent patterns, however mild activity may be experienced on:
26 Mar to 27 Mar, 4 Apr, 9 Apr to 10 Apr, 17 Apr, 20 Apr to 23 Apr.
Best Quiet Periods:
28 Mar to 3 Apr, 5 Apr to 7 Apr, 11 Apr to 16 Apr, 18 Apr to 19 Apr,
24 Apr to 25 Apr.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: NA
Central Australian Regions: NA
Southern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 27 Mar to 18 Apr.
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
Geomagnetic activity can frequently be determined by short timescale
solar events that cannot be forecast a week in advance, particularly
at solar maximum.
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