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The seismometer records the P and S-wave arrival times. P-waves travel faster through the earth than S-waves and so they arrive at the seismometer station before the S-waves and are recorded by the seismometer first.
The difference in arrival time between the two types of seismic wave can be used to calculate the distance of the earthquake's epicentre from the seismometer.
This can then be plotted on a map, by drawing a circle with a radius equal to the distance to the epicentre around the seismometer station. This is then repeated for the other two seismometer stations and the point where the three circles intersect is the location of the earthquakes epicentre.
What else can I help you with?
How many comparative points are required for a positive id?
exactly 7
Where exactly was the Vietnam war?
Southeast Asia: 1. Ground warfare occurred in the Republic of South Vietnam (RVN) 2. Airwarfare occurred in the skies over North Vietnam 3. Covert warfare occurred in the nations of Cambodia and Laos 4. Riverine warfare occurred in all waterways of RVN
Exactly when is a presidential election required to take place according to the Constitution?
in 2009
Why would you not expect a fossil buried million years ago to look exactly like modern day organism?
evolution occurred
Where was the campaign located?
The Atlanta campaign wasn't exactly located anywhere. It mostly occurred in northwestern Georgia around the Atlanta area.
Are identical triplets exactly the same at birth?
Exactly - no. They're usually a bit different in size. Fingerprints are different. And if their DNA is VERY CLOSELY analysed, there will be tiny, tiny differences that has occurred since the egg split.
Where do they cut the DNA strand?
They direct a specific Restriction Enzyme to cut the Dna Exactly where required.
Where was the atlanta campaign located?
The Atlanta campaign wasn't exactly located anywhere. It mostly occurred in northwestern Georgia around the Atlanta area.
What can cops do to eighteen year olds drinking alcohol at house party?
Depends on the state, and exactly what occurred and what they can prove. We don't have enough information to answer.
Why is union required in programming?
Not exactly required, but very useful when different sorts of data should be handled, like in a list of mixed numbers and strings elements.
Are you required to have 401k if you are self employed?
Absolutely not. Nobody is required by law to have a 401k. However, it is always a good idea to be saving for retirement and that is exactly what a 401k will help you do.
Are manual fire alarm pull stations required?
Check with your local building department of your city or county. They will be able to tell you exactly what is required in your community.
