GEOLOGY 1 Lecture Notes - Lecture 9: Epicenter, Lake Ontario
Document Summary
Determine this by o empirical observations o laboratory experiments o. The closer you are to the earthquake, the greater the damage. The greater the magnitude, the greater the damage. But this is modified by natural and anthropogenic conditions o natural: nature or soil/rocks o anthropogenic: nature or the structures that we build. List of earthquake hazards o surface faulting- structures on the fault will be disrupted by the tearing motion. So don"t build right on active faults o ground shaking- this is generally the greatest threat to buildings and people. The most damage from ground shaking is generally a direct consequence of surface wave motion. And, if you are close to the epicenter, the p and s wave arrivals. The amount of shaking also depends on the nature of the soil/rocks in the area. Soft soils (clay) shake more than stiff soils (sand) which shake more than rock. When seismic waves slow down as they go into another material.
