[Ips-wgr] IPS Weekly Geo. Report (25 August 11)
rwc
rwc at ips.gov.au
Thu Aug 25 12:26:08 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 25 AUGUST 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (16 AUGUST - 24 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
16 Aug 1333 3111 9
17 Aug 2221 2011 4
18 Aug 1110 1211 3
19 Aug 1110 0001 1
20 Aug 1211 1122 4
21 Aug 1110 1011 2
22 Aug 2221 0222 5
23 Aug 2122 2332 8
24 Aug 2211 2202 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.
Quiet to Unsettled conditions observed for the last 7 days.
Predominently Quiet conditions with Unsettled to Active
periods expected for the next 7 days. Increased
geomagnetic activity due to recurrent coronal hole expected
between 26Aug-29Aug.
2. FORECAST (25 AUGUST - 24 SEPTEMBER)
Disturbed Periods:
Active on 2 Sep.
Best Quiet Periods:
25 Aug, 29 Aug to 31 Aug, 3 Sep, 6 Sep to 9 Sep, 13 Sep to 18 Sep.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australia Regions: Quiet.
Central Australia Regions: Quiet, Mildly Disturbed 26Aug-29Aug.
Southern Australia Regions: Quiet to Mildy Disturbed, Disturbed
periods 26Aug-29Aug.
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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