ERTH 2415 Lecture Notes - Lecture 8: Natural Frequency, Hypocenter, Epicenter

• School: Carleton University
• Department: Earth Sciences
• Course: ERTH 2415
• Professor: Jason Mah

Document Summary

Erth 2415 lecture 8 earth quakes, people and infrastructure. Intensity a measure of the effects of an earth quake on people and infrastructure: shake map intensity map generated automatically using data from networks of seismograph stations, input ground motion data, knowledge of regional geology. Output computed intensity: factors affecting earth quake damage : earth quake magnitude, epicenter location, distance from epicenter, hypocenter depth, duration of shaking, Area near to the epicenter would experience more destruction than areas far away, but it also depends on the regional geology near the epicenter: hypocenter is the point at depth where the earth quake occurs. If the hypocenter is close to the surface then the seismic waves would be less attenuated and will result in stronger ground shaking: duration of shaking longer time causes more damage. Aftershocks small earth quakes that follow the large (mainstream shock).