Q3. Measurements on a Wood Anderson seismograph were used to determine the local magnitude by Richter. The natural period of this seismograph is T. 0.8s and the damping ratio, S = 80%. Two earthquakes are sized using this device, one in Eastern Canada & another in California. Both occurred at a distance of 200km from the recording station, and calculated to be M. = 6. The time history of the earthquake records indicate the motion in California primarily consists of T. = 1.0s motions and those in Eastern Canada consists of Tn = 0.1s. Discuss whether you believe these two earthquakes are of the same magnitude, and released the same energy. If not, which earthquake you believe released more energy? Q3. Measurements on a Wood Anderson seismograph were used to determine the local magnitude by Richter. The natural period of this seismograph is T. 0.8s and the damping ratio, S = 80%. Two earthquakes are sized using this device, one in Eastern Canada & another in California. Both occurred at a distance of 200km from the recording station, and calculated to be M. = 6. The time history of the earthquake records indicate the motion in California primarily consists of T. = 1.0s motions and those in Eastern Canada consists of Tn = 0.1s. Discuss whether you believe these two earthquakes are of the same magnitude, and released the same energy. If not, which earthquake you believe released more energy