While it is hard to fathom, earthquakes are triggered by a number of factors including urbanization, the strain on fault lines, and even volcanic activity. These factors are the ones that must be analyzed if one wants to know about the earthquake history. They can be quite misleading, as they do not take into account the major causes of these events. That is why, the best way to know about earthquake history is to study the causes of these events, and note down the past earthquakes in order to become a better researcher.
A major cause of earthquake history is actually rooted in the urbanization phenomenon. The overall growth of population has led to the gradual contraction of the natural channels in which the ground moves. As this happened, there is a huge possibility of the fault lines being developed, which can then cause an earthquake. In other words, the population itself is responsible for the development of these faults. But since a huge number of people live in a certain area, the chances of this happening is quite high.
The second and third major causes of earthquake history are due to the stress and strain put on the faults. Earthquake history actually refers to the big physical effects that the ground feels when it is ruptured. Since a great deal of tension is exerted on the ground, the pressure is transferred onto the region around it.
During times when large populations have been living in a particular place, the chance of major destruction is increased, especially when major forces come together. When the stress is so much that it goes beyond its limits, it is usually time for the ground to collapse. This is often manifested in the form of earthquakes. This is why, an increase in population is seen as the main trigger of a devastating earthquake, although not the only cause.
Sometimes, volcanoes also cause earthquakes, which might be quite puzzling. Their erupting can mean an increase in air pressure, which can then trigger earthquakes. This is what is called the “triggering effect”.
The final major source of earthquake history is found when the magnitude is more than 8. Most of the time, this is caused by the urbanization. However, in rare cases, the earthquakes can be caused by the fault lines. The formation of these lines during the settlement stage is what leads to the huge pressures that result in the earthquake.
The factors mentioned above are the three primary reasons why a person should know about earthquake history. Knowing the things that led to these earthquakes is important, because this will help the one who is a victim of an earthquake to make proper preparations to avoid them. So this is the first and most important step that must be taken.
The next article will be about the steps that a person must take in order to prevent the earthquake history from occurring again. It will also tell the steps that must be taken in order to avoid the earthquake from triggering off another disaster.