What is a seismic zone?

The seismic zone is an area in which the rate of seismic activity remains relatively consistent. This may mean that seismic activity is incredibly rare or that it is extremely common. Some people often use the term "seismic zone" to talk about areas with an increased risk of seismic activity, while others prefer to speak of "seismic risk zones" in discussion about areas where seismic activity is more frequent. These agencies use data that collect seismic activities, divide the nation into various seismic zones. A number of different territorial planning systems are used, from numerical zones to color zones, each number or color representing a different level of seismic activity. For example, in the United States, seismic zones are divided between one and five, with the zone five are most at risk of seismic activity. Full zones often occur where continental plates meet but can alsoFind around volcanoes. The main fault zone in North America far from the boundaries of the albums is caused by a huge bubble of magma under the Earth's bark, which regularly bubbles into an explosive volcanic eruption.

The division of the country into various seismic zones can identify the nation that are exposed to increased risk. These areas may have stricter building regulations that are designed to be safer in the case of the earthquake, and the emergency services in the high -risk seismic zone may be required to have special earthquakes and frequent exercises to practice the reaction to the earthquake. Insurance companies usually also increase their rates in the seismic zone with high activity.

One of the greatest risks beyond the basic fraying for people in high -activity seismic zone is liquefaction. The liquefaction of the soil occurs when free sediments in the water are hung up due toFor seismic activity that pushes the water surface up. When the soil is liquefied, the soil is no longer able to support the weight of buildings, highways and other structures, causing collapse. Underground service lines can be interrupted in this process, resulting in potentially explosive gas leaks along with extensive wastewater contamination. In zones with high activity, which are also exposed to liquefaction, the earthquake may be extremely dangerous.