[Ips-wgr] IPS Weekly Geo. Report (23 June 11)
rwc
rwc at ips.gov.au
Thu Jun 23 14:24:25 EST 2011
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 23 JUNE 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (14 JUNE - 22 JUNE)
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
14 Jun 2223 1112 6
15 Jun 1222 2112 5
16 Jun 1111 1300 3
17 Jun 3211 2211 6 A weak (12nT) impulse was observed in
18 Jun 1120 0000 1 the IPS magnetometer data at 0240UT on 17 Jun.
19 Jun 1111 1001 2
20 Jun 1221 1021 4
21 Jun 1221 3222 7
22 Jun 2213 2332 9
*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 (23 JUNE - 23 JULY)
Disturbed Periods:
Active on 23-24 Jun.
Best Quiet Periods:
28-30 Jun, 7-19 Jul.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: No significant disturbed periods expected.
Best Quiet Periods: 25-30 Jun, 1-23 Jul
Central Australian Regions:
Disturbed Periods: 23-25 Jun
Best Quiet Periods: 27-30 Jun, 7-19 Jul
Southern Australian Regions:
Disturbed Periods: 23-28 Jun, 1-6 Jul, 20-23 Jul
Best Quiet Periods: 12-18 Jul
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
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