[Ips-wgr] IPS Weekly Geo. Report (25 August 11)
rwc at ips.gov.au
Thu Aug 25 12:26:08 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 25 AUGUST 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (16 AUGUST - 24 AUGUST)
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
16 Aug 1333 3111 9
17 Aug 2221 2011 4
18 Aug 1110 1211 3
19 Aug 1110 0001 1
20 Aug 1211 1122 4
21 Aug 1110 1011 2
22 Aug 2221 0222 5
23 Aug 2122 2332 8
24 Aug 2211 2202 5
*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 observed for the last 7 days.
Predominently Quiet conditions with Unsettled to Active
periods expected for the next 7 days. Increased
geomagnetic activity due to recurrent coronal hole expected
2. FORECAST (25 AUGUST - 24 SEPTEMBER)
Active on 2 Sep.
Best Quiet Periods:
25 Aug, 29 Aug to 31 Aug, 3 Sep, 6 Sep to 9 Sep, 13 Sep to 18 Sep.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australia Regions: Quiet.
Central Australia Regions: Quiet, Mildly Disturbed 26Aug-29Aug.
Southern Australia Regions: Quiet to Mildy Disturbed, Disturbed
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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