What are the controls of earthquake

http://www.google.com/webhp?source=search_app#q=+controls+of+earthquake

The controls of an earthquake refer to the factors that determine its occurrence and characteristics. It is important to note that earthquakes are natural and uncontrollable phenomena, meaning that they cannot be controlled or manipulated by humans. However, understanding the factors that influence earthquakes can help us better prepare and mitigate their impact. Here are the main controls of earthquakes:

1. Tectonic Plate Boundaries: Most earthquakes are a result of the movement and interaction of Earth's tectonic plates. These massive plates, which make up the Earth's crust, can collide, slide past each other, or separate. The types of plate boundaries involved in the earthquake's location determine the characteristics of the quake.

2. Seismic Activity: Earthquakes occur along fault lines, which are fractures in Earth's crust. When stress builds up along a fault line and becomes greater than the strength of the rocks holding it together, the accumulated energy is released in the form of an earthquake. The amount of seismic activity and the intensity of earthquakes are influenced by the rate and magnitude of this energy release.

3. Depth of Focus: Earthquakes can occur at different depths within the Earth's crust, ranging from shallow to intermediate to deep. The depth of the earthquake's focus is determined by the tectonic processes happening at that location.

4. Geologic Conditions: The type of rocks and geological structures in an area can affect the propagation and intensity of seismic waves generated during an earthquake. Hard, dense rocks tend to transmit seismic waves more efficiently compared to soft or loose sediments, which can amplify shaking and cause more damage.

5. Interaction with Human Structures: The impact of an earthquake on society depends on how it interacts with human-built structures. Factors such as population density, construction standards, and infrastructure resilience play a crucial role in determining the level of damage and loss of life.

While we cannot control or prevent earthquakes, measures such as implementing seismic building codes, improving early warning systems, and increasing public awareness can help reduce their impact.