Hi, I have had some remarkable success with winkquake
in predicting the location of an epicentre for a  few local
quakes. Using the Kalamunda station and two autodrum
stations,  it has been possible to locate an epicentre
within 5 km of the quoted value. Though our depth of these
quake are highly likely to be around 5 km. But you need
a good "P" and "S" wave for the prediction.

I would like to write or use a program that can locate
a quake using the "P" waves. Can anyone help in locating
a program, code or a source of information on how this is
done? I guess a least squares equation is involved but the
way depth is calculated eludes me.

Any ideas.

Arie




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