How do you find the amplitude of an S wave?
- Measure the distance between the first P wave and the first S wave.
- Find the point for 24 seconds on the left side of the chart below and mark that point.
- Measure the amplitude of the strongest wave.
What is the amplitude of S wave?
The S wave amplitude decreases as the left precordium is approached. Although the upper limits of the S wave amplitude in leads V1, V2, and V3 have been given as 1.8, 2.6, and 2.1 mV, respectively,31 an amplitude of 3.0 mV is recorded occasionally in healthy individuals. An S wave is often absent in leads V5 and V6.
What is the distance from the epicenter to Fresno CA?
355 kilometers
How long does it take an S wave to travel 300 km?
approximately 70 seconds
How long does it take as wave to travel 8000 km?
Approximately 11 minutes and 20 seconds
How long does it take as wave to travel 5000 km?
6 minutes and 20 seconds
What is the P wave travel time?
Table of P and S-P versus distance
| Delta Degrees | Time of P Wave (min) | Time of P Wave (sec) |
|---|---|---|
| 6.5 | 1 | 33.3 |
| 7.0 | 1 | 40.2 |
| 7.5 | 1 | 47.0 |
| 8.0 | 1 | 53.9 |
How long does it take an P wave to travel 4000 km?
For example, this graph tells you that if an earthquake epicenter is 4000 km away, the P-wave will take 7 minutes to get to you.
How long does it take for a primary wave to travel 2000 km?
In a solid such as rock, the primary wave can travel at 5 km/sec; it would take 400 seconds, or about 6.7 minutes to travel 2,000 km. If traveling through water, the wave travels at about 1.45 km/sec and would need 1,379 seconds (23 minutes) to travel 2,000 km.
How long does it take a secondary wave to travel 2000 km?
Depending on the forcing factors, an earthquake’s s-wave could reach this distance in anywhere from approximately 4 minutes (at a speed of 8km/s) to 33 minutes (at a speed of 1km/s).
How do you find the P-wave arrival time?
7) If you are asked to determine the arrival time of the P-wave and given a clock time for the arrival of the S-wave: Find difference in arrival time between P-wave and S-wave at the given epicenter distance, Subtract the difference in arrival time from the clock time of the S-wave.
What is the total distance that a wave will travel in 7 minutes and 20 seconds?
4,200 kilometers
How do you find the distance between P and S waves?
Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter.
Can you infer why P waves travel faster through the upper mantle than they do through the crust?
Mantle rock is generally denser and stronger than crustal rock and both P- and S-waves travel faster through the mantle than they do through the crust. If the material is completely liquid, P-waves are slowed dramatically and S-waves are stopped altogether.
Do S waves travel faster than P waves?
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. The energy is thus less easily transmitted through the medium, and S-waves are slower.
What is the interval between the P wave and S wave?
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 time difference between P waves and S waves?
Wave Speeds 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. The S waves are the second wave to reach a seismic station measuring a disturbance. The difference in arrival times helps geologists determine the location of the earthquake.
What is common to both P waves and S waves?
Answer: P-waves and S-waves are waves of the body that travel across the globe. On average, P-waves move 60% faster than S-waves, since the interior of the Earth does not respond to both of them in the same way. Compression waves that apply a force in the direction of propagation are P-waves.
What is the relationship between S and P waves?
P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.