Updated:  28 June 2005

Australian Geomagnetism Report 2002 Summary

Introduction

During 2002, Geoscience Australia operated geomagnetic observatories at Alice Springs and Kakadu in the Northern Territory, Canberra in the Australian Capital Territory, Charters Towers in Queensland, Gnangara and Learmonth in Western Australia, Macquarie Island, Tasmania, in the sub-Antarctic, and Mawson and Casey in the Australian Antarctic Territory.

The absolute magnetometers in routine service at the Canberra Magnetic Observatory also serve as the Australian standards. The calibration of these instruments can be traced to International Standards. Absolute magnetometers at all the other Australian observatories were standardised to those at Canberra.

Magnetic mean value data were provided to the World Data Centres for Geomagnetism at Boulder, USA and at Copenhagen, Denmark, as well as to INTERMAGNET. K indices, principal storms and rapid variations were hand-scaled for the Canberra and Gnangara observatories, and provided regularly to the International Service of Geomagnetic Indices. K indices were digitally scaled at the Mawson observatory.

Eleven repeat stations were re-occupied in 2002 during two field surveys, the first in April-May and the second in November.

This report describes instrumentation and activities, 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 GA during calendar year 2002.


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For more information contact: geomag@ga.gov.au
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