Earth Sciences 1022A/B Lecture Notes - Lecture 1: Ground Vibrations, Hypocenter, Richter Magnitude Scale
9 Apr 2018
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Document Summary
Earth sciences 1022a lecture brief 15 oct 15. Foreshocks and aftershocks accompany the main event with some earthquakes. Seismic station data indicate that earthquakes occur mainly at plate boundaries. Measuring the size of earthquakes: the richter scale measures earthquake magnitude based on the amplitude of the largest wave on the seismogram which depends on the energy released; largest earthquakes recorded in history ~8. 9. Prediction: short-range predictions (hours to days) are not yet feasible. Long-range predictions are made where seismic gaps occur along plate boundaries that is, where no big earthquakes have happened for at least 100 years; overdue.
