[Ips-wgr] IPS Weekly Geo. Report (18 February 10)
rwc
rwc at ips.gov.au
Thu Feb 18 12:54:50 EST 2010
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 18 FEBRUARY 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (09 FEBRUARY - 17 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
09 Feb 1112 1111 3
10 Feb 2222 1122 6
11 Feb 3222 3212 8
12 Feb 2221 2112 5
13 Feb 2210 1122 4
14 Feb 2111 3012 5
15 Feb 3222 2243 11
16 Feb 3222 1223 8
17 Feb 2111 1112 4
*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.
Mostly quiet to unsettled conditions. Some active periods observed on
15 and 16 February due to a weak CME and a recurrent pattern of
strengthening in the solar wind stream.
2. FORECAST (18 FEBRUARY - 20 MARCH)
Disturbed Periods:
No strong recurrent patterns, however mild activity may be experienced on:
1 Mar to 2 Mar, 15 Mar.
Best Quiet Periods:
19 Feb to 28 Feb, 3 Mar to 14 Mar, 16 Mar.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 18 Feb to 14 Mar.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 18 Feb to 14 Mar.
Southern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 18 Feb to 14 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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