GEOL 1 Lecture 17: Geol 1 - Physical Geology - 17
Document Summary
Educate public on what to do before, during and after quakes (drop, cover, hold on) But with sufficient data, probabilities of future quakes can be forecasted. Probability of an eq on a given fault over a certain time period. Based on statistics of how often quakes occur on the fault. Require geologic or historic record of activity. Goal is to predict when and where earthquakes will strike. Based on precursors: small foreshocks, change in well-levels, electromagnetic waves, even animal behavior. There are allegations that poor will be displaced by new projects. Even though us got airport running, international relief was not coordinated. Stress and strain concentrated on old faults in certain areas. Effects of intraplate quakes often felt over larger areas than boundary quakes. Plate interiors are colder, more rigid and continuous. Seismic waves lose less energy within plates. Plate boundaries have loose blocks of crust and are warmer. Area sparsely settled, little loss of life.
