The Physics Of An Earthquake

Earthquakes are vibrations occurring in the outer layers of the earth and in the crust, the forces that push a large amount of rocks overcome friction and fix the rocks and the rock blocks slide. The range of vibration is rarely subject to destructive influence. There are six kinds of shock waves. Both are classified as real waves. That is, they pass through the interior of the earth and the other four are surface waves. Waves change according to the type of rock and the layer they hit. Primary or compression wave (P wave) transfer particles move back and forth in the same direction as the wave propagation, while secondary or transverse waves (S waves) transmit vibrations vertically.

Based on the probability (or likelihood) of the earthquake, the physical characteristics of the hypocenter, and the propagation of seismic waves in the crust, basic and applied scientific basis for predicting the type of seismic motion predicted from future large earthquakes Research is being conducted. And the influence of the local website. Along with the destruction scenario of specific faults, these risk assessments are based on probabilistic seismic risk assessment such as earthquake risk maps throughout the country that constitute earthquake resistance requirements of buildings and other laws and regulations, and detailed urban earthquakes, It is essential for various applications. Danger map including direction of destruction, three dimensional basin response, and nonlinear effect of soil. These city disaster maps will be included in the code update for the selected area

In recent years, people are working on earthquake prediction and successfully evaluate earthquake disasters in different geographical locations to reduce earthquake risk. The physical properties of earthquake fault sources are better identified and modeled for computer analysis. In addition, seismologists have studied earthquakes caused by human activities, such as saving water behind a high dam or exploding underground nuclear explosions. The purpose of the latter study was to find a way to distinguish between explosion and natural earthquake.