[Ips-wgr] IPS Weekly Geo. Report (19 March 09)
rwc at ips.gov.au
Thu Mar 19 13:04:47 EST 2009
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 19 MARCH 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (10 MARCH - 18 MARCH)
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
10 Mar 1110 1211 3
11 Mar 2221 1012 4
12 Mar 3222 1113 7
13 Mar 3333 3322 13
14 Mar 2233 1322 9
15 Mar 2232 2102 6
16 Mar 2122 1221 5
17 Mar 1211 1212 4
18 Mar 1111 2001 2
*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.
2. FORECAST (19 MARCH - 18 APRIL)
No strong recurrent patterns, however mild activity may be experienced on:
26 Mar, 4 Apr, 9 Apr to 10 Apr.
Best Quiet Periods:
19 Mar to 25 Mar, 27 Mar to 3 Apr, 5 Apr to 8 Apr, 11 Apr to 14 Apr.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 11 Apr - Mildly disturbed
Central Australian Regions: 19-20 Mar,26-27 Mar,9-10 Apr - Mildly disturbed, 11 Apr - Disturbed
Southern Australian Regions: 19-20 Mar, 26-27 Mar, 9-11 Apr - Disturbed
Best Quiet periods: 19-25 Mar, 28 Mar - 8 Apr, 12-14 Apr
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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