[Ips-wgr] IPS Weekly Geo. Report (27 September 12) issued 0201 UT on 27 Sep 2012
rwc at ips.gov.au
Thu Sep 27 12:01:25 EST 2012
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 27 SEPTEMBER 2012, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (18 SEPTEMBER - 26 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
18 Sep 2222 2312 7
19 Sep 2211 2243 9
20 Sep 3332 2211 9 In the IPS magnetometer data for 20
Sep, a weak (14nT) impulse was observed
21 Sep 2213 1312 7
22 Sep 2222 0012 4
23 Sep 1100 0001 1
24 Sep 1110 0111 2
25 Sep 1110 0001 1
26 Sep 1211 2122 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.
Mostly quiet to unsettled conditions.
2. FORECAST (27 SEPTEMBER - 27 OCTOBER)
No strong recurrent patterns, however mild activity may be experienced on:
29 Sep to 5 Oct, 15-17 Oct.
Best Quiet Periods:
27-28 Sep, 6-14 Oct, 18-23 Oct.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: NA
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 27 Sep to 23 Oct.
Southern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 27-30 Sep, 4-23 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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