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How many seismograph reading are needed before an earthquake's epicenter can be located?
Wiki User
∙ 13y ago
three
Wiki User
∙ 13y ago
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On a typical day, a seismologist is usually studying the instruments that monitor shocks and any seismic activity on the earth. Seismologists carry out a lot of graph reading and record keeping.
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What is the difference of the P waves and S waves used to locate an earthquake's epicenter?
P waves, also called primary waves, are the first waves to be registered on a seismograph. The S waves, or secondary waves, are the second and slower wave to register on the seismograph. When locating an earthquakes epicenter seismologists take the first reading of the P wave, and then take the reading from the S wave. At the station of where the earthquake was recorded, seismologists draw a large circle from where the earthquakes epicenter could be. TO exactly located the earthquakes epicenter there needs to be at least 3 dfferent staions where the earthquake hit to determine its epicenter using the S and P time interval.
What is a seismogragh?
A seismograph is the reading that comes from a seismometer. They are used to measure the seismic waves that are generated by volcanoes and earthquakes.
What are the example of objective?
Objective information is a type of information that is not caused or biased by an individual's perspective. For instance, geologists measure earthquakes using a seismograph. The seismograph takes an objective reading of an earthquake and assigns it a number. This reading also gives the duration. An individual who has felt the earthquake may insist that he earthquake was much longer or stronger than the measurement. The individual's experience is subjective. The measurement is objective.
How do you read a seismogram?
A seismograph is used to delete seismic waves under the surface of the Earth. It helps seismologists to determine the locations of earthquakes.
What are the examples of objective information?
Objective information is a type of information that is not caused or biased by an individual's perspective. For instance, geologists measure earthquakes using a seismograph. The seismograph takes an objective reading of an earthquake and assigns it a number. This reading also gives the duration. An individual who has felt the earthquake may insist that he earthquake was much longer or stronger than the measurement. The individual's experience is subjective. The measurement is objective.
Can the s-p time method be used with one seismograph station to locate the epicenter of an earthquake?
The first step in this method is to collect several seismograms of the same earthquake from different locations. Then, the seismograms are placed on a time-distance graph. The seismogram tracing of the first P wave is lined up with the P-wave time-distance curve, and the tracing of the first S wave is lined up with the S-wave curve.The distance of each station from the earthquake can be found by reading the horizontal axis. After finding out the distances, a seismologist can locate an earthquake's epicenter.-New Boyz
How many seismic do you need to find an earthquakes epicenter?
3. With 2 you can get possible locations (where the 2 circles intersect). With the 3rd reading, that circle will intersect the other two circles at one of those 2 candidate locations. See the link for a description.http://www.geo.mtu.edu/UPSeis/locating.html
Why is three the minimum of the stations necessary to locate an epicenter?
A single seismic station can tell you the distance to an earthquakes epicentre but will give you no information on it's location. Seismic vibrations take time to travel to a seismic station and when you have two seismic stations you can narrow down the location of the earthquake's epicentre to two possible locations. Add in a reading from a third station and you can nail down the exact location because if you draw 3 circles one round each station with the size of each circle proportional to the distance of the station form the epicenter, they will intersect at one location on the planet and that location is the epicenter.
Can s-p time method be used with one seismograph station to locate the epicenter of an earthquake?
The first step in this method is to collect several seismograms of the same earthquake from different locations. Then, the seismograms are placed on a time-distance graph. The seismogram tracing of the first P wave is lined up with the P-wave time-distance curve, and the tracing of the first S wave is lined up with the S-wave curve.The distance of each station from the earthquake can be found by reading the horizontal axis. After finding out the distances, a seismologist can locate an earthquake's epicenter.-New Boyz
Can the s-p time method be used with on seismograph station to locate the epicenter of an earthquake?
The first step in this method is to collect several seismograms of the same earthquake from different locations. Then, the seismograms are placed on a time-distance graph. The seismogram tracing of the first P wave is lined up with the P-wave time-distance curve, and the tracing of the first S wave is lined up with the S-wave curve.The distance of each station from the earthquake can be found by reading the horizontal axis. After finding out the distances, a seismologist can locate an earthquake's epicenter.-New Boyz
Can the S-P times method be used with one seismograph station to locate the epicenter of an earthquake?
The first step in this method is to collect several seismograms of the same earthquake from different locations. Then, the seismograms are placed on a time-distance graph. The seismogram tracing of the first P wave is lined up with the P-wave time-distance curve, and the tracing of the first S wave is lined up with the S-wave curve.The distance of each station from the earthquake can be found by reading the horizontal axis. After finding out the distances, a seismologist can locate an earthquake's epicenter.-New Boyz
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