Abstract
It has been proved by observation with the Galitzin seismographs, both at Pulkowa and Eskdalemuir, that when the first phase P of an earthquake is sharp, the azimuth of the epicentre from the station is uniquely determined by the observations at that station. It follows that if the azimuth of the epicentre is determined at two independent stations suitably situated, the epicentre can be determined from these two azimuths alone.
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GALITZIN, B., WALKER, G. Determination of the Epicentre of an Earthquake.. Nature 90, 3 (1912). https://doi.org/10.1038/090003b0
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DOI: https://doi.org/10.1038/090003b0
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