[Ips-wgr] IPS Weekly Geo. Report (26 May 11)
rwc
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
Australian Region*
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)
Disturbed Periods:
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
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.
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PO Box 1386 WWW: http://www.ips.gov.au
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