[Ips-wgr] IPS Weekly Geo. Report (26 May 11)
rwc at ips.gov.au
Thu May 26 13:29:42 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 26 MAY 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (17 MAY - 25 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
17 May 2123 2212 7
18 May 1111 1110 2
19 May 1111 1000 1
20 May 1000 0000 0
21 May 0111 0112 2
22 May 2110 1100 2
23 May 1101 2111 3
24 May 1111 2201 3
25 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 over the last 7 days.
2. FORECAST (26 MAY - 25 JUNE)
Possibly active 27-30 May.
Best Quiet Periods:
31 May to 05 Jun, 07 Jun to 10 Jun, 14 Jun to 20 Jun.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 26 May to 21 Jun.
Central Australian Regions:
Mildly Disturbed Periods: 27-31 May.
Best Quiet Periods: 01-21 Jun.
Southern Australian Regions:
Disturbed Periods: 27-31 May.
Best Quiet Periods: 02 Jun to 08 Jun, 10 Jun, 15 Jun to 21 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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