spherical waves at far distance act like plane wave
Yes, that is correct. The time difference between the arrival of P-waves and S-waves increases as the earthquake epicenter gets closer to the seismograph. P-waves are faster, so they arrive first, followed by the slower S-waves.
The arrival time difference between P-waves and S-waves at station 4 would be shorter than at station 3. This is because the further away a seismic station is from the earthquake epicenter, the shorter the time difference between the arrival of P-waves and S-waves. This is due to the faster travel speed of P-waves compared to S-waves.
The difference between the arrival times increases as the distance from an earthquake epicentre increases as S-waves travel more slowly than P-waves so the greater the distance the further they lag behind.
The time between P-waves (primary waves) and S-waves (secondary waves) varies depending on the distance from the seismic event. Generally, for an earthquake, the time difference can range from a few seconds to several minutes, with P-waves arriving first, followed by S-waves. The greater the distance from the epicenter, the longer the interval between the two types of waves. Seismologists often use this time difference to determine the location of the earthquake.
Your standing on it! P-waves travel faster than S-waves through the Earth. As such the further away a seismometer station is from the epicentre of an Earthquake, the larger the difference between arrival times will be. By the same logic this means that the closer you get to the epicentre, the smaller the difference in arrival time will be until your at the epicentre when the difference will be zero!
There are primarily two types of wavefronts: spherical wavefronts and plane wavefronts. Spherical wavefronts originate from a point source and propagate radially outward in all directions, similar to ripples in water. Plane wavefronts are flat, parallel surfaces that move uniformly in the same direction, similar to waves on the surface of a calm lake.
Spherical wavefronts are curved, expanding in all directions from a point source, like ripples on water. Plane wavefronts are flat, propagating in a straight line, similar to a laser beam. The key distinction lies in how the waves spread out in space.
The equation for calculating the phase difference between two waves is: Phase Difference (2 / ) (x) Where: Phase Difference is the difference in phase between the two waves is the wavelength of the waves x is the difference in position between corresponding points on the waves
The formula for calculating the phase difference between two waves is: Phase Difference (2 / ) (x) Where: Phase Difference is the difference in phase between the two waves is the wavelength of the waves x is the difference in position between corresponding points on the waves
To determine the phase difference between two waves, you can compare the starting points of the waves and measure the time it takes for each wave to reach a specific point. The phase difference is then calculated based on the difference in time or angle between the two waves.
Waves that spread outwards in all directions are called spherical waves.
To calculate the phase difference between two waves, you can measure the difference in their starting points or peaks. This difference is usually expressed in degrees or radians.
Surface waves travel slower than body waves.
There is not any difference between tidal waves and tsunamis, except for that cyclones are high waves accompanied with heavy rain wheras tsunamis are only waves.
sound are longitudinal waves while water waves are transverse waves
The main difference between mechanical and electromagnetic waves is how they travel. Mechanical waves require a medium, such as air or water, to propagate, while electromagnetic waves can travel through a vacuum.
Difference is in their frequency, audible sound waves is between 12 Hz and 20,000 Hz, Ultrasound waves is any sound that has a frequency beyond the 20,000 Hz limit