[Ips-wgr] IPS Weekly Geo. Report (31 March 11)
rwc
rwc at ips.gov.au
Thu Mar 31 13:37:12 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 31 MARCH 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (22 MARCH - 30 MARCH)
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
22 Mar 2222 2002 5
23 Mar 2232 2332 10
24 Mar 2112 1111 4
25 Mar 1111 2111 3
26 Mar 1100 0001 1
27 Mar 1100 0012 2
28 Mar 1100 2011 2
29 Mar 1101 0202 2
30 Mar 4311 1001 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 with active levels 00-03UT 30th March.
2. FORECAST (31 MARCH - 30 APRIL)
Disturbed Periods:
Possible isolated active levels are expected 31 Mar,3 Apr,8 Apr,
19 Apr and 30 Apr.
Best Quiet Periods:
1-2 Apr, 4-7 Apr, 9-18 Apr and 20-29 Apr.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 31 Mar to 30 Apr.
Central Australian Regions:
Mildly Disturbed Periods: 9 and 10 Apr.
Best Quiet Periods: 31 Mar to 8 Apr and 11 Apr to 30 Apr.
Southern Australian Regions:
Disturbed Periods: 9 and 10 Apr.
Best Quiet Periods: 31 Mar to 8 Apr and 11 Apr to 30 Apr.
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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