[Ips-wgr] IPS Weekly Geo. Report (21 July 11)
rwc
rwc at ips.gov.au
Thu Jul 21 12:36:33 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 21 JULY 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (12 JULY - 20 JULY)
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
Australian Region*
Date K-INDICES A
12 Jul 3212 3221 8
13 Jul 2212 2010 4
14 Jul 1223 1211 6
15 Jul 1311 1110 4
16 Jul 1112 0101 2
17 Jul 2201 0101 2
18 Jul 1212 2111 4
19 Jul 1123 2433 11
20 Jul 2324 3323 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.
Quiet to unsettled conditions with an active period 19 Jul and 20 Jul.
2. FORECAST (21 JULY - 20 AUGUST)
Disturbed Periods:
21 Jul to 23 Jul 15 Aug to 18 Aug.
16 Aug.
Best Quiet Periods:
24 Jul to 27 Jul and 11 Aug to 13 Aug.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Southern Australian Regions:
Disturbed Periods: 15 Aug to 16 Aug.
Best Quiet Periods: 24 Jul to 5 Aug.
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
flight-line data.
PLEASE NOTE:
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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