@Schoolseismo Actually, to be fair, a grid search with the EDT misfit function finds multiple "circles" (~hyperboloids) from phase arrival differences at at station, including S-P. https://t.co/eTsrwQ6VJn https://t.co/1Xtpoy5AJv
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RT @ALomaxNet: @mrbrianolson ... this depth uncertainty and bias will trade off with epicenter when the azimuth distribution of stations is…
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@mrbrianolson ... this depth uncertainty and bias will trade off with epicenter when the azimuth distribution of stations is poor, such a geometry may have contributed to the initial ShakeAlert epicenter error relative to the reviewed location https://t.co