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During 2005 Geoscience Australia operated geomagnetic observatories at Kakadu and Alice Springs in the Northern Territory; Charters Towers in Queensland; Learmonth and Gnangara in Western Australia; Canberra in the Australian Capital Territory; Macquarie Island, Tasmania, in the sub-Antarctic; and Casey and Mawson in the Australian Antarctic Territory. Three geomagnetic repeat stations were also occupied in 2005. The Australian Geomagnetism Report 2005 (Volume 53) describes instrumentation and activities; absolute reference magnetometers; data distribution; and presents monthly and annual mean magnetic values, plots of hourly mean magnetic values and K indices at the magnetic observatories and repeat stations operated by Geoscience Australia during calendar year 2005.

Legacy product - no abstract available

Legacy product - no abstract available

No product available. Removed from website 25/01/2019

Legacy product - no abstract available

Legacy product - no abstract available

This report describes the operation of the Mawson geophysical observatory for 1990. The observatory continuously records the geomagnetic field and global seismic activity at Mawson, and was part of the Bureau of Mineral Resources (BMR) contribution to the Australian National Antarctic Research Expeditions (ANARE). The period covered by this report is from 1 January 1990 to 30 November 1990.

The geomagnetic program at Davis and Casey is conducted in association with the Auroral and Space Physics (ASP) section of the Australian Antarctic Division. The Antarctic Division purchased, installed and operate EDA FM 100 fluxgate magnetometers at both stations to assist upper atmospheric physics investigations. The variometers are not calibrated to observatory standard. However using the digital variation data in association with absolute observations provides much better estimates of monthly field values than relying on absolute observations alone.

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