Question

solutions of earthquake

Answer 1

The key is to identify areas that have the potential for major damage from earthquakes based on the history of earthquakes in that region over thousands of years. This is important because it provides governments information to make long-term planning decision about large population centers and infrastructure locations. For example, the government should not permit large cities where a lot a people could be affected by an earthquake or nuclear power plants whose damage could result in dangerous long-term pollution to the environment that is very expensive to clean up to be located in areas prone to earthquakes.

Large population centers like the city of San Francisco and important infrastructure projects like the Hoover Dam are expected to last for centuries. So the appropriate test of whether they are safe from earthquakes is whether earthquakes are likely to occur in those locations over the next few hundred years.

Any region where major earthquakes occur with a frequency of between 200 and 500 years is a dangerous area for major population centers and large infrastructure investments. For example, can we afford to rebuild a city like Los Angeles every 200 years? Or can we afford another great fire of London after the one in 1666, about 345 years ago? Government planning was correct when London was rebuilt to survive a thousand years. Anything less would be devastating in terms of the loss of lives and the financial strain on the country.

Of course, we have information about many recent major earthquakes in the last century, but that does not help unless predict the frequency of earthquakes in a specific location over the long run. For that, we need earthquake data over thousands of years.

We know that earthquakes usually occur along fault lines. Many of these like the ring of fire run north-to-south along the western United States and from Japan down to Sumatra on the opposite side of the Pacific Ocean. These provide us with longitudes where earthquakes are likely to occur. However, they do not provide the latitudes. For example, would Tokyo City have been built at its current location if an earthquake is likely to occur at this latitude?

To get more precise information about the likely location of earthquake for long-term government planning, we need to study locations at different latitudes on the ring of fire for the possibility of earthquakes and Tsunamis. This can be done by taking core samples from the earth, up to 100 feet, that can be analyzed to see if earthquakes and Tsunamis have occurred there before. The period of these events can also be determined. Based on this we may evaluate the chance that a certain area will be hit, say, every 100 years or 1000 years

Answer 2

.Evacuate the quake zone. Pump sea-water into the fault. Set off several large explosions in the fault. Force an earthquake of predictable magnitude, releasing a measurable quantity of stress-energy.Geologists have a reasonable idea of how much stress there is in any particular fault. From that they can estimate how large the largest (likely) quake will be