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A Real Earthquake. Seismograms: TUC = Tucson PCAZ = Phoenix GLA = Yuma WUAZ = Wupatki.
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A Real Earthquake.Seismograms: TUC = TucsonPCAZ = PhoenixGLA = YumaWUAZ = Wupatki
Determine distance of earthquake from station GLA at Yuma:P arrival time 46 secS arrival time 91 sec(S - P time) 45 secDistance from station to EQ:distance = (S - P time) X 8 km/sec = 45 sec X 8 km/sec = 360 kmNOW YOUR TURN T0 DETERMINEDISTANCES FROM OTHER STATIONS!
Triangulating on the earthquake:Draw circle with radius 360 km around GLA.Use your distances from other seismic stations to “triangulate” the location of the earthquake. 360 km