[Ips-wgr] IPS Weekly Geo. Report (29 September 11)
rwc at ips.gov.au
Thu Sep 29 12:54:34 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 29 SEPTEMBER 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (20 SEPTEMBER - 28 SEPTEMBER)
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
20 Sep 2222 1111 5
21 Sep 1112 2212 5
22 Sep 1110 1122 3
23 Sep 2110 0002 2
24 Sep 2111 2012 4
25 Sep 2202 2212 5
26 Sep 2112 5564 27
27 Sep 4343 3234 18
28 Sep 3342 3312 13
*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.
Active 26 Sep to 27 Sep.
Quiet to unsettled on other days.
2. FORECAST (29 SEPTEMBER - 29 OCTOBER)
Active on 7 Oct, Active on 9 Oct.
Best Quiet Periods:
30 Sep, 2 Oct to 6 Oct, 11 Oct to 13 Oct, 15 Oct to 23 Oct, 25 Oct.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 29 Sep to 8 Oct, 10 Oct to 22 Oct.
Southern Australian Regions:
Disturbed Periods: 8 Oct to 10 Oct, 23 Oct to 25 Oct.
Best Quiet Periods: 29 Sep to 6 Oct, 12 Oct to 22 Oct.
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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