EARTHSC 1G03 Chapter Notes - Chapter 1-3: Compressive Stress, Seismic Wave, Igneous Rock
16 Dec 2017
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Document Summary
Seismic waves: waves of energy emitted at the focus of an earthquake. P-waves (compressional waves): waves in which particles of material move back and forth parallel to the direction in which the itself moves. S-waves (shear waves): seismic waves in which particles of material move back and forth perpendicular to the direction in which the wave itself moves. Surface waves: seismic waves that travel along earth"s surface. Where: earthquakes occur in elongate seismic belts. Most seismic belts correspond to plate boundaries, and earthquakes. Strength: earthquake intensity at a locality on the earth"s surface refers to the degree of ground shaking at that locality. Magnitude: the number that represents the maximum amplitude of ground motion that would be measured by a seismometer placed at a specified distance from the epicenter. Richter scale: a scale that defines earthquakes on the basis of the amplitude of the largest ground motion recorded on a seismogram.
