Geomagnetism - Applications

See all Geoscience Australia Data and Applications


(7 products total)

Application Description
Australian Geomagnetic Reference Field Values Application
An application to calculate geomagnetic field values in Australia using the 2010 Australian Geomagnetic Reference Field model (AGRF) model.
Australia-wide Total Intensity Variability Application
Using data from the six Australian continental magnetic observatories, a contour display of the rate-of-change of magnetic total intensity, F, over the continent is shown below. This provides a broad view of how F changes across Australia. The units shown on the contours are in nanoTesla per hour. The grey squares indicate the locations of the magnetic observatories. Both real-time and historic data can be displayed in this format. All maps are generated from a period of 15 minutes of observatory data and available at 15 minute intervals.
International Quiet Days (IQD) and International Disturbed Days (IDD) Application
International Quiet Days (IQD's) are the days where the geomagnetic variations are a minimum in each month. International Disturbed Days (IDD's) are 5 days in each month where the geomagnetic variations are maximum. The classification of days is relative only to the month of calculation. The average disturbance level in one month may differ from another.
K Indices from Australia Application
The k index is a quasilogarithmic index of geomagnetic activity relative to an assumed quiet day curve for the recording site. k is a code from 0-9 that characterizes magnetic activity (0 being the least active field and 9 the most active field) over a 3 hour period.
Minute Values Request Form Application
Minute Values Request Form
Canberra Realtime Data Application
Canberra Realtime Data for last 24 hours
SUNAZ is a set of computer programs comprising SUNAZ and SUNIN to calculate azimuth-by-hour-angle observations of the Sun to determine true north azimuth to an azimuth mark based on the observing proforma described in K.A. Weinert (1980), Notes on Geomagnetic Observatory and Survey Practice, Earth Science 5, UNESCO, paragraph 246, page 36, using the algorithm described in G.G.Bennett (1980), "A Solar Ephemeris for use with Programmable Calculators", The Australian Surveyor, Vol.30, No.3, pp 147-151.