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Please indicate in the seismogram the arrival-time of P-, S-, and surface wavesWhat is the approximate distance of this event?(A) 1 km(B) 10km(C) 100km(D) 1000kmDescription de l'image :Arrivée onde P au bout de 7 [s]Arrivée onde S au bout de 22 [s]Arrivée ondes surface au bout de 25 [s](Ref sismographe Fribourg 1999/02/14, Magnitude 4.3)

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