[Ips-wgr] IPS Weekly Geo. Report (30 April 15) issued 0240 UT on 30 Apr 2015
rwc
rwc at ips.gov.au
Thu Apr 30 12:40:03 EST 2015
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 30 APRIL 2015, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (21 APRIL - 29 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
Australian Region*
Date K-INDICES A
21 Apr 3334 4322 16
22 Apr 2233 2212 8
23 Apr 1311 0001 3
24 Apr 2201 1000 2
25 Apr 1000 0001 0
26 Apr 1100 0001 1
27 Apr 1112 1111 3
28 Apr 1112 2111 4
29 Apr 1102 0101 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 International Center for Space Weather
Science and Education, Japan.
Active conditions for on 21Apr due to coronal hole effects. Quiet to
Unsettled on other days.
2. FORECAST (30 APRIL - 30 MAY)
Disturbed Periods: 12 May.
Best Quiet Periods: 1-5 May, 20-25 May.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: No disturbed periods.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 30 Apr, 3-11 May, 16-17 May, 19-26 May.
Southern Australian Regions:
Disturbed Periods: 2 May, 13-15 May, 18 May.
Best Quiet Periods: 3-11 May, 17 May, 20-26 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
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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