Last updated 02 Sep 2010 02:14 UT SUBJ: IPS WEEKLY GEOPHYSICAL REPORT ISSUED ON 02 SEPTEMBER 2010, BY IPS RADIO AND SPACE SERVICES, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (24 AUGUST - 01 SEPTEMBER) 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 24 Aug 3333 4323 15 25 Aug 3324 3322 13 26 Aug 3333 3211 11 27 Aug 2333 3323 13 28 Aug 2232 2122 7 29 Aug 1111 0011 2 30 Aug 1111 0001 1 31 Aug 1121 1012 3 01 Sep 2211 1122 5 *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 (02 SEPTEMBER - 02 OCTOBER) Disturbed Periods: No strong recurrent patterns, however Unsettled-Active may be experienced on: 5-7 Sept, 20-23 Sept Best Quiet Periods: 2 Sep to 4 Sep, 8 Sep to 19 Sep, 24 Sep to 28 Sep. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 2 Sep to 20 Sep. Central Australian Regions: Disturbed Periods: Mildly disturbed 20-24 Sept Best Quiet Periods: 2 Sep to 19 Sep. Southern Australian Regions: Disturbed Periods: 20-24 Sept Best Quiet Periods: 2 Sep to 11 Sep, 16 Sep to 20 Sep. 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.