[Ips-wgr] IPS Weekly Geo. Report (28 December 06)
rwc
rwc at ips.gov.au
Thu Dec 28 12:12:55 EST 2006
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 28 DECEMBER 2006, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (19 DECEMBER - 27 DECEMBER)
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
19 Dec 2334 3222 12
20 Dec 3333 4333 16
21 Dec 3243 3322 13
22 Dec 3334 2323 14
23 Dec 2233 3322 11
24 Dec 2232 3322 10
25 Dec 2232 2212 7
26 Dec 2121 2111 4
27 Dec 2221 1101 4
The geomagnetic activity stayed mostly at quiet to active
levels for the first three days of this period due to the
effect of the high speed solar wind stream from a coronal
hole. The activity level then gradually declined to mostly
quiet and stayed at this level for most part of the remaining
period.
2. FORECAST (28 DECEMBER - 27 JANUARY)
Disturbed Periods:
Unsettled to active from 03 to 04 January, 16 to 19 January and on
23 January.
Best Quiet Periods:
28 December to 01 January, 05 January, 09 January, 13 to 14 January,
20 to 22 January,
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 28 Dec to 8 Jan, 12 Jan to 22 Jan.
Central Australian Regions:
Disturbed Periods: 6 Jan, 8 Jan to 11 Jan, 15 Jan, 18 Jan to 19 Jan.
Best Quiet Periods: 28 Dec to 31 Dec, 22 Jan.
Southern Australian Regions:
Disturbed Periods: 9 Jan to 11 Jan.
Best Quiet Periods: 28 Dec to 31 Dec, 21 Jan to 22 Jan.
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.
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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