[Ips-wgr] IPS Weekly Geo. Report (11 August 11)
rwc
rwc at ips.gov.au
Thu Aug 11 11:59:24 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 11 AUGUST 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (02 AUGUST - 10 AUGUST)
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
02 Aug 1121 0111 3
03 Aug 1210 0001 2
04 Aug 1210 0003 3 A weak (11nT) impulse was observed in the IPS
magnetometer data at 2155UT on 04 Aug.
05 Aug 2111 0255 14 A weak (22nT) impulse was observed in the IPS
magnetometer data at 1902UT on 05 Aug.
06 Aug 4333 3312 14
07 Aug 3210 1121 5
08 Aug 1223 4112 9
09 Aug 2332 0012 6
10 Aug 1222 2111 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.
Minor storm on 5 August, quiet to active from 6 to 9 August,
otherwise mostly quiet.
2. FORECAST (11 AUGUST - 10 SEPTEMBER)
Disturbed Periods:
active on 16 Aug, active on 1 and 2 Sep.
Best Quiet Periods:
12 Aug to 13 Aug, 20 Aug, 22 Aug to 25 Aug, 29 Aug to 31 Aug, 3 Sep.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Southern Australian Regions:
Disturbed Periods: 16 Aug to 17 Aug.
Best Quiet Periods: 11 Aug to 14 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.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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