[Ips-wgr] IPS Weekly Geo. Report (22 April 10)
rwc
rwc at ips.gov.au
Thu Apr 22 12:55:34 EST 2010
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 22 APRIL 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (13 APRIL - 21 APRIL)
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
13 Apr 1121 1102 3
14 Apr 1111 0124 6
15 Apr 3321 2101 6
16 Apr 2221 0010 3
17 Apr 1120 0021 2
18 Apr 1110 0101 1
19 Apr 1312 1111 5
20 Apr 1211 2211 4
21 Apr 1221 3211 6
*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.
2. FORECAST (22 APRIL - 22 MAY)
Disturbed Periods:
No strong recurrent patterns, however mild activity may be experienced on:
22 Apr to 23 Apr, 28 Apr to 30 Apr, 4 May to 5 May, 8 May to 9 May, 11
May to 12 May.
Best Quiet Periods:
24 Apr to 27 Apr, 1 May to 3 May, 6 May to 7 May, 10 May, 13 May to
18 May.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 22 Apr to 12 May.
Central Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 22 Apr to 12 May.
Southern Australian Regions:
Disturbed Periods: 2 May to 3 May.
Best Quiet Periods: 22 Apr to 30 Apr, 5 May to 12 May.
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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