Although seismic activity in Russia is mainly evident only in the South and East of the country, for other countries the problem of sudden occurrence of earthquakes is very important. Tremors can present a huge danger for the population, not to mention the advent of the tsunami and more serious consequences like accident at a nuclear power plant. Therefore, scientists are constantly developing new technologies as quickly as possible to warn citizens of the impending disaster, because here the account is already in seconds.
American seismologists have created ShakeAlert is a special warning system of earthquakes, which shall promptly notify the inhabitants of the Western coast of the United States on the slightest tremors. For its operation it uses 400 seismographs installed throughout California. As soon as at least one sensor detects the first signs of the earthquake, the specialists instantly get a warning.
The system is able to calculate the magnitude of the approaching tremors, estimate time in advance, and the approximate radius of the earthquake, forming a kind of “security zone”.
Read also — 10 most destructive earthquakes in history
And recently, scientists made it possible to send alerts about the disaster not only on computers but also on smartphones.
Most interesting is that the US government does not want to allocate funds for the development of ShakeAlert. The cost of installing one such system comes to $ 100 million plus the costs of its continued maintenance. However, seismologists have reported a high probability (99 %) of occurrence of an earthquake in California that could affect Los Angeles and San Francisco. Now the question is — will the officials to transfer the required amount of money, or it will be too late.
West coast USA (pink) is the most risk of earthquakes
Warning systems like ShakeAlert work successfully in other countries. So, for example, using one of these networks, established in 2007 in Japan, 52 million people in the country were promptly alerted about a serious 9-point earthquake in 2011, which allowed to minimize casualties. At that time it was the strongest earthquake in the history of Japan.
Last year the same system is alerted about the earthquake the residents of the city of Mexico, giving them a 30-second advantage over the elements. The power of the earthquake was 7.4 points.
See also — In USA there have been more than 3000 earthquakes a few days. In California it is expected even more
Scientists believe that the government does not want to allocate funds for ShakeAlert because of the small number of earthquakes over the past 15 years. The most recent destructive earthquake occurred in the USA in 1994, in California. Then killed 60 people, and the cost of repair exceeded $ 13 billion. However, on July 4 of this year, an earthquake in California — it is the strongest in state history over the last 20 years. Last push with a magnitude of 7.1 was recorded in the South of the state in 1999, but at that time, fortunately, nobody has suffered. This time too there were no casualties and major destruction. But how long can it be “take”?