[Ips-wgr] IPS Weekly Geo. Report (29 July 10)
rwc
rwc at ips.gov.au
Thu Jul 29 12:03:08 EST 2010
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 29 JULY 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (20 JULY - 28 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
20 Jul 2121 1111 4
21 Jul 2211 1111 4
22 Jul 1112 1111 3
23 Jul 1232 1222 7
24 Jul 2110 1221 4
25 Jul 2221 2221 6
26 Jul 2221 0112 4
27 Jul 2333 3332 13
28 Jul 3233 3222 11
*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 over the last 7 days with occasional
Active periods for high latitudes due to coronal hole effects.
Mostly Quiet conditions expected for the next week with minimal
coronal hole influenced geomagnetic activity.
2. FORECAST (29 JULY - 28 AUGUST)
Disturbed Periods:
Active on 23 Aug.
Best Quiet Periods:
30 Jul to 9 Aug, 12 Aug to 18 Aug, 20 Aug to 22 Aug.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 29 Jul to 23 Aug.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 29 Jul to 24 Aug.
Southern Australian Regions:
Disturbed Periods: 23 Aug to 24 Aug.
Best Quiet Periods: 29 Jul to 21 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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