[Ips-wgr] IPS Weekly Geo. Report (18 April 13) issued 0150 UT on 18 Apr 2013
rwc at ips.gov.au
Thu Apr 18 11:50:22 EST 2013
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 18 APRIL 2013, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (09 APRIL - 17 APRIL)
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
09 Apr 1211 1111 3
10 Apr 1221 1112 4
11 Apr 1111 1112 3
12 Apr 2221 1111 4
13 Apr 2211 1113 5
14 Apr 2233 2212 8 In the IPS magnetometer data for 14
Apr, a weak (10nT) impulse was observed
15 Apr 2221 1032 6
16 Apr 2100 0212 3
17 Apr 1111 2101 3
*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 International Center for Space Weather
Science and Education, Japan.
Quiet to unsettled conditions.
2. FORECAST (18 APRIL - 18 MAY)
No strong recurrent patterns, however mild activity may be experienced on:
23-26 Apr, 11 May, 14 May.
Best Quiet Periods:
18-22 Apr, 27 Apr to 10 May, 12-13 May.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 18-24 Apr, 26-Apr to 18-May.
Southern Australian Regions:
Disturbed Periods: 26-Apr.
Best Quiet Periods: 18-23 Apr, 28-Apr to 8-May, 13-18 May.
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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PO Box 1386 WWW: http://www.ips.gov.au
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