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Big earthquakes in the Eastern and Central US occur every few hundred years, but Pittsburgh is well outside the major threat zones for earthquake hazard as seen in the
USGS National Seismic Hazard map.
The nearest fault is the New Madrid Seismic Zone about 500-800 miles southwest near the southern tip of Illinois. The last major New Madrid earthquakes in 1811-1812 were among the largest ever recorded in North America, but when the next one occurs, Pittsburgh will be far enough away that there will be minor damage.
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∙ 11y ago
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Why does it flood after earthquakes?
it doesn't always happen but if the earthquake was underwater two it would cause a tsunami ( a really big wave) and flood the city/town.
When did the earthquakes happen in the mount St. Helens eruption of 1980?
March 20, 1980 was the date of the big eruption.
How long do big earthquakes last?
it depends on how strong it is.
What is the cause of earthquakes in volcanic regions?
Earthquakes are like a rubber band. They both have limits. If you strech a rubber band the farthest it can, it will eventually meet it's elastic limit or the point where it can strech its farthest. If you go any farther than its elastic limit the rubber band will break. This is an example of how earthquakes are formed.I'm not sure if a volcano can cause earthquake or an earthquake can cause an volcanic eruption or both. But earthquakes can cause volcanoes to erupt. There are many kinds of earthquakes some are big and destructive but most of them are small that we can't even feel. Small earthquakes are important now and then because if they don't happen often the stress and force build up and create a big earthquake. One cause of earthquake causes in volcanic regions can probably be the shaking of an earthquake can cause an eruption. Or the shaking ofa volcano can cause an earthquake.
Is big ben earthquake resistant?
The building which houses Big Ben was built long before we worried about earthquakes. But England only rarely has very minor earthquakes.
Where are earthquakes a big problem?
Well earthquakes can happen in alot of different places such as Africa but the reason e=why they happen is because the earth is being shaken which causes it to happen
How many earthquakes have the US had?
Earthquakes (big and small) happen so many times a day, it is impossible to put a number on it.
When is the most affected season of tsunamis?
In the summer, that is when most of the earthquakes happen. If there happens to be a big earthquake, there is a chance of a big tsunami.
How big are Australia's earthquakes?
As big as regular earthquakes.
In 1 day how many earthquakes happen in Japan?
no one knows the answer to that but a big one happen one march 11,2011 bye now
Why is large earthquakes often followed by numerous aftershock?
why ARE large earthquakes.... ANSWER- Aftershocks happen after a big earthquake because the movement on the fault changed the forces in the earth that act on the fault itself and nearby. Aftershocks go on until the fault recovers, which takes much longer in the middle of a continent.
Does CA get really bad earthquakes?
no, but we have them probably more often then other states or part of the world. Thay say that "The Big One" is coming but we can never predict earthquakes.
Why do you get big earthquakes?
we get big earthquakes because, the bigger the land is moving the bigger the earthquake.
Where do earthquakes generally occur?
The Ring of Fire
How does big ben withstand earthquakes?
Big Ben is in London, England which doesn't have a problem with earthquakes.
Do all earthquakes have after shock?
No only middle and big magnitude earthquakes do.
How big are the earthquakes?
The earthquakes will be 90%-81% of the largest 40,000km long.
