To view locations of earthquake epicentres in South Australia

To view locations of earthquake epicentres in South Australia

Excel Spreadsheet, Calculations from instrumental recordings - direct from recorders - accuracy of instrument timing and number of recorders
Research work - dependent on the detail in newspaper reports (usually about 1:1M)
Post 1964 - mostly from...

Excel Spreadsheet, Calculations from instrumental recordings - direct from recorders - accuracy of instrument timing and number of recorders
Research work - dependent on the detail in newspaper reports (usually about 1:1M)

Post 1964 - mostly from calculations based on readings from local and interstate recorders
1909 - 1963 - from calculations based on readings from broad Australian recorder network and newspaper and research reports
Pre 1909 - from newspaper and research reports (isoseismal maps)
Positional accuracy:Dependent on location of recorders, accuracy of recorders, magnitude of event.
Attribute accuracy:Dependent on location of recorders, accuracy of recorders, magnitude of event.

Place - before 1989-2-1 this was place at which eq was felt. Note that from 1962 - 1968 when network was only starting, felt place may be better epicentre than lat - long!
Up to 1997-6-1 this was nearest town. Post 1997-6-1 includes town, direction and distance.

Depth - depth of focus - note that this is nearly always much less accurate than location. Usually needs a station very close by for there to be much accuracy in the depth. Depths of 0, 1, 5 and 10 may be used as defaults.

Accuracy - extra note - accuracy A may be a mistake. Only a few locations have be calculated with a local model. Nearly all locations in all areas of the state have been calculated with the same, single layer velocity model. Accuracies I, J and K have not been applied rigorously. The accuracy of an epicentre is heavily dependent on the location of recording stations. If an epicentre is within the recording network, it is likely to be much more accurate than if it is outside the recording network. This information is not available in this dataset. Recording network has slowly changed from paper to digital starting in 1989. Most of the relevant stations have been added below, with reduced location accuracy.

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