What does a longer time interval mean about the locations distance to the epicenter?

How does the ps time interval change with distance from the epicenter?

With increasing distance from the earthquake, the time difference between the arrival of the P waves and the arrival of the S waves increases. Put more simply, the higher the time between the S and P waves (the S-P interval), the farther the distance.

How does distance from an epicenter affect the interval between the S and P waves?

As the P and S waves travel out from an earthquake the P waves get progressively farther ahead of the S waves. Therefore, the farther a seismic recording station is from the earthquake epicenter the greater will be the difference in time of arrival between the P and S wave.

What happens to lag time the further you are from the epicenter?

The shorter the lag time, the farther the distance. There is no relationship.

Which of the statements best describes the relationship between lag time and distance from epicenter?

Q. Which of the statements best describes the relationship between lag time and distance from epicenter? The longer the lag time, the closer the distance.

What is the recurrence interval for the section of the San Andreas fault that runs through Parkfield?

Seismologists discovered that the San Andreas Fault near Parkfield in central California consistently produces a magnitude 6.0 earthquake approximately once every 22 years.

What is the interval between the P and S waves?

S waves are indicated by an abrupt change in wave amplitude. In the seismogram below, we see that the S wave arrived at about 34 sec after the P wave arrived. This time difference is called the S-P interval and is the lag time between the P and S wave.

What is the interval between the primary and secondary waves?

P waves travel faster than S waves, and are the first waves recorded by a seismograph in the event of a disturbance. P waves travel at speeds between 1 and 14 km per second, while S waves travel significantly slower, between 1 and 8 km per second.

What is the time interval between the arrival of the first P wave and the arrival of the first S wave?

about 48 seconds

For the seismogram to the right the amplitude of the S wave is about 270, and the SP interval is about 48 seconds, that is the difference in time from the arrival of the first P wave until the arrival of the first S wave.. A nomogram will help you to determine the magnitude (intensity) of an earthquake.

What’s the difference between P waves and S waves?

P waves can travel through liquid and solids and gases, while S waves only travel through solids. Scientists use this information to help them determine the structure of Earth. For example, if an earthquake occurs on one side of Earth, seismometers around the globe can measure the resulting S and P waves.

What happens to the time difference between primary and secondary waves as the distance gets longer?

What happens to the times difference between primary and secondary waves as the distance traveled gets longer? The time differences become bigger. Suppose a primary and secondary wave both travel a distance of 4,000 km before they are picked up by a seismograph.

What is the difference between P waves and S waves based on their movement speed and capacity to move through a medium?

P-waves and S-waves are body waves that propagate through the planet. P-waves travel 60% faster than S-waves on average because the interior of the Earth does not react the same way to both of them. P-waves are compression waves that apply a force in the direction of propagation.

What are two major and very useful differences between P and S waves?

P waves can travel through any media (including liquid and gas), but S waves can only travel through solid media like rock. P waves travel faster than S waves. The difference in travel times can be used to determine the epicenter of the earthquake.

What do you call the location of the earthquake that you have identified using triangulation method?

The point where the three circles intersect is the epicenter of the earthquake. This technique is called “trilateration.” (Image from IRIS.)

What are P and S waves and where do they come from?

Both P and S waves travel outward from an earthquake focus inside the earth. The waves are often seen as separate arrivals recorded on seismographs at large distances from the earthquake. The direct P wave arrives first because its path is through the higher speed, dense rocks deeper in the earth.

What happened to S and P waves as they travel inside the Earth?

S waves cannot pass through the liquid outer core, but P waves can. The waves are refracted as they travel through the Earth due to a change in density of the medium. This causes the waves to travel in curved paths.

What happens to P waves and S waves from an earthquake when they reach the outer core?

Figure 19.2a: P-waves generally bend outward as they travel through the mantle due to the increased density of mantle rocks with depth. When P-waves strike the outer core, however, they bend downward when traveling through the outer core and bend again when they leave.

What is the velocity of the S waves as it travels at the outer core Why?

In the region of the outer core the speed of S-waves or shear waves is shown to be zero but really they are evanescent and so the velocity is probably complex. Then at the inner core boundary the speed of S-waves is shown again down to the center of the Earth, fairly flat near 4 km/sec.

What causes the velocity of a P wave to speed up when it enters the inner core?

What causes the velocity of a P-wave to speed up when it enters the inner core? The inner core is liquid, and thus the wave speeds up.

Where do P-waves travel fastest?

Generally, p-wave velocity increases with depth and increases with increasing rigidity of a material. Therefore p-waves travel fastest through the solid, iron inner core of Earth.

Why do P-waves travel faster in the mantle?

Because the earth’s mantle becomes more rigid and compressible as the depth below the asthenosphere increases, P-waves travel faster as they go deeper in the mantle. The density of the mantle also increases with depth below the asthenosphere. The higher density reduces the speed of seismic waves.

How long does it take a P-wave to travel through Earth?

16 to 20 minutes

P-wave takes 16 to 20 minutes to travel through the Earth.

How long does it take a P wave to travel through the Earth 1 minute 5 minutes 10 minutes 20 minutes?

Complete answer: P-wave takes 16 to 20 minutes to tour through the Earth.

How are earthquake locations determined?

Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. Every earthquake is recorded on numerous seismographs located in different directions.