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Can the magnitude of an aftershock be stronger than the magnitude of the main earthquake?
Wiki User
∙ 12y ago
By definitiona an aftershock is always smaller than the larger earthquake that preceeded it. If an earthquake then occurs that is of larger magnitude and related to the prior seismic activity it is redesignated as the mainshock and all pre-recording quakes are re-designated as foreshocks.
Wiki User
∙ 12y ago
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How many days after the Haitian earthquake did the aftershocks follow?
The two largest aftershocks from the Haitian earthquake had a magnitude of 6.0 and 5.9. The magnitude 6.0 aftershock occurred 7 minutes after the main earthquake on the 12th of January and the magnitude 5.9 aftershock occurred at 11:03 GMT on the 20th of January. Please see the related questions for more information.
What is the smaller shake called that follows the main earthquake?
The smaller shake after the main earthquake is called an aftershock or tremor.
How long do after shocks happen after an earthquake?
By this you could mean 2 things:How long after the main earthquake do aftershocks occur?A: This depends on the magnitude of the main quake, and the faultline and how much tension there is between the tectonic plates.2. For how long after the main earthquake do aftershocks occur?A: This again depends on the magnitude of the main earthquake and the faultline.
What do you call the little earthquakes that come before a big earthquake?
Foreshock is what you call one of the little earthquakes that come before the big earthquake or main shock. The main shock may be followed by a little earthquake that's called the aftershock.
What is the main factor in determining the risk that location might have an earthquake?
Magnitude :D
Can an aftershock of an earthquake be stronger than the earthquake itself?
Yes. However the preceding earthquakes (including the one that was originally the largest) are then downgraded or renamed as foreshocks and the new larger magnitude earthquake is termed the main shock.
How many days after the Haitian earthquake did the aftershocks follow?
The two largest aftershocks from the Haitian earthquake had a magnitude of 6.0 and 5.9. The magnitude 6.0 aftershock occurred 7 minutes after the main earthquake on the 12th of January and the magnitude 5.9 aftershock occurred at 11:03 GMT on the 20th of January. Please see the related questions for more information.
aftershock?
a small earthquake that follows the main earthquake
What is smaller earthquake that follow a larger earthquake?
An earthquake is the movement of the tectonic plates, the little quake that happens after the main quake is called the aftershock.Aftershocks. If an aftershock is stronger than the original earthquake, it takes its place and trhe last earthquake becomes a pre-shock.
What is the smaller shake called that follows the main earthquake?
The smaller shake after the main earthquake is called an aftershock or tremor.
How many aftershocks were there following the major Haitian earthquake of January 2010 and what was their magnitude?
The US Geological survey report that (as of the 5th of February, 2010) there have been 59 aftershocks of magnitude 4.5 or greater. Sixteen of which had magnitudes of 5.0 or above. The two largest aftershocks had a magnitude of 6.0 and 5.9. The magnitude 6.0 aftershock occurred 7 minutes after the main earthquake on the 12th of January and the magnitude 5.9 aftershock occurred at 11:03 GMT on the 20th of January. Please see the related question.
What are foreshocks and aftershocks?
An aftershock is an earthquake that comes after another, larger earthquake often within a few days.
What are earthquake after earthquake?
A small earthquake that happens after a larger one is called an aftershock. Aftershocks happen because the crust in the area where the main earthquake happened is adjusting to the earthquake's effects.
Compare and contrast aftershocks and foreshocks?
An aftershock is a small earthquake that follows the main earthquake, while a foreshock is a small earthquake that often precedes, leads to, a major earthquake.
Why do afterschocks occur?
I'm assuming you know how earthquakes occur and all an aftershock is a smaller earthquake after a larger one. If the "aftershock" is larger than the main shock it is reclassified as the main shock and the previous "main shock" becomes a foreshock.
What do you call the vibration which occurs after main earthquake?
The earthquakes after a major earthquake in the same area are called aftershocks.
What caused a second earthquake to hit Haiti on Jan 20 2010?
There would be a second earhquake after the first, it always do,just like the earthquake in the China in 2008. Actually, it is called an aftershock. If the aftershock was a higher valve then the first quake then the aftershock becomes the earthquake and the earthquake becomes the aftershock. Hope you get this. So to put it in perspective, the main hit is called an earthquake and any following disruptions are called aftershocks and not considered earthquakes. To answer the question: Geophysicists in the US have found that the "aftershocks" produced by earthquakes are triggered by the dynamic seismic waves from the main shock rather the changes in stress in nearby faults brought about by the rearrangement of the earths crust,as previously believed.
