[Ips-wgr] IPS Weekly Geo. Report (19 February 09)
rwc
rwc at ips.gov.au
Thu Feb 19 12:07:25 EST 2009
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 19 FEBRUARY 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (10 FEBRUARY - 18 FEBRUARY)
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
10 Feb 2210 1111 3
11 Feb 2121 1111 4
12 Feb 2212 1211 5
13 Feb 2110 1112 3
14 Feb 2344 4313 17
15 Feb 2333 4212 12
16 Feb 2211 1222 5
17 Feb 1211 1111 3
18 Feb 1211 0112 3
*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.
Active periods on 14 Feb. Mostly quiet to unsettled on other days.
2. FORECAST (19 FEBRUARY - 21 MARCH)
Disturbed Periods:
No strong recurrent patterns, however mild activity may be experienced on:
21 to 22 Feb, 27 to 28 Feb, 03 Mar, 12 to 14 Mar, 21 Mar.
Best Quiet Periods:
19 Feb to 20 Feb, 23 to 26 Feb, 01 to 02 Mar, 04 to 11 Mar, 15 to 20 Mar.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 19 Feb to 15 Mar.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 19 Feb to 15 Mar.
Southern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 19 Feb to 15 Mar.
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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