Abstract
With data obtained from earthquakes and explosions before the Salmon event, it was possible to compute regional travel-time corrections and station corrections which reduced the location error for Salmon by a factor of 10 if times from all (91) stations were used and by a factor of 2 if times from only distant stations were used. When all stations were used, the error was less than 2 km, and the 0.90 confidence ellipse had an area of about 100 km2. The computation when times from 23 distant stations (Δ > 20°) were used gave an error of less than 6 km, a 0.90 confidence ellipse of about 900 km2, and a 0.75 confidence ellipse of 500 km2. The latter ellipse covered the true location.
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