[Ips-wgr] IPS Weekly Geo. Report (28 May 09)
Regional Warning Centre
rwc at ips.gov.au
Thu May 28 14:30:09 EST 2009
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 28 MAY 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (19 MAY - 27 MAY)
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
19 May 2211 0011 3
20 May 2211 0111 3
21 May 1111 1001 2
22 May 1112 2221 5
23 May 1111 0111 2
24 May 1111 0111 2
25 May 1110 0011 1
26 May 1111 1111 3
27 May 1110 0001 1
*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 (28 MAY - 27 JUNE)
No strong recurrent patterns, however mild activity may be experienced on:
3 Jun to 4 Jun, 10 Jun.
Best Quiet Periods:
28 May to 2 Jun, 5 Jun to 9 Jun, 11 Jun to 23 Jun.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: NA
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 28 May to 23 Jun.
Southern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 28 May to 3 Jun, 5 Jun to 23 Jun.
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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