[Ips-wgr] SWS Weekly Geo. Report (12 July 18) issued 0219 UT on 12 Jul 2018 [SEC=UNCLASSIFIED]
rwc
rwc at ips.gov.au
Thu Jul 12 12:19:31 EST 2018
SUBJ: SWS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 12 JULY 2018, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (03 JULY - 11 JULY)
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
03 Jul 0110 1200 2
04 Jul 0111 1010 1
05 Jul 1102 3332 8 In the SWS magnetometer data for 05
Jul, a weak (8nT) impulse was observed
at 1753UT.
06 Jul 2222 2001 4
07 Jul 1111 0110 2
08 Jul 1110 1001 1
09 Jul 1100 0100 1
10 Jul 1221 2100 3
11 Jul 1233 2211 7
*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 International Center for Space Weather
Science and Education, Japan.
Mostly quiet, some unsettled conditions on 11 July.
2. FORECAST (12 JULY - 11 AUGUST)
Disturbed Periods:
No strong recurrent patterns, however mild activity may be experienced on:
25, 26 Jul.
Best Quiet Periods:
12-14 Jul, 16-19 Jul, 27-31 Jul, 2-6 Aug.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: No disturbed periods expected
Central Australian Regions: NA
Mildly Disturbed Periods: 23-25 Jul.
Best Quiet Periods: 12-22 Jul, 26 Jul to 8 Aug.
Southern Australian Regions:
Disturbed Periods: 23-25 Jul.
Best Quiet Periods: 12-22 Jul, 26 Jul to 8 Aug.
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.
Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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