type of seismic wave
…the two surface seismic waves, Love waves—named after the British seismologist A.E.H. Love, who first predicted their existence—travel faster. They are propagated when the solid medium near the surface has varying vertical elastic properties.
What are Love waves and Rayleigh waves?
Love waves have a horizontal motion that moves the surface from side to side perpendicular to the direction the wave is traveling. Of the two surface waves, Love waves move faster. Rayleigh waves cause the ground to shake in an elliptical pattern. This motion is similar to that observed in ocean waves.
What are the characteristics of Love waves?
Love waves are transverse and restricted to horizontal movement – they are recorded only on seismometers that measure the horizontal ground motion. Another important characteristic of Love waves is that the amplitude of ground vibration caused by a Love wave decreases with depth – they’re surface waves.
What does a Love wave feel like?
One type of surface wave, Rayleigh waves, makes it feel like the ground is rolling. The other type of surface wave, Love waves or L-waves, makes it feel like the ground is shaking.
Where do Love waves occur?
Two types of surface waves, known as Love waves and Rayleigh waves after their discoverers, propagate near the Earth’s surface. Rayleigh waves result from a combination of P and SV motions, while Love waves result from SH waves trapped near the surface.
Which wave is more destructive Love or Rayleigh?
Answer and Explanation: While both types of surface waves are dangerous, Love waves cause more damage than Rayleigh waves.
What is the movement of Love waves?
Love Waves—surface waves that move parallel to the Earth’s surface and perpendicular to the direction of wave propagation. Particle motion consists of alternating transverse motions. Particle motion is horizontal and perpendicular to the direction of propagation (transverse).
Which is more destructive Love or Rayleigh?
Love waves cause more damage than Rayleigh waves, but both are highly destructive because they occur near the surface of the Earth.
What is the frequency of Love waves?
Their result indicated that Love wave energy is about 50% of Rayleigh wave energy above 0.1 Hz, although Love wave energy is larger for frequencies below 0.1 Hz.
What is the velocity of a Love wave?
Earthquake Love waves have velocities up to 4.5 km/s, faster than Rayleigh waves. Love waves are possible with a monotonic velocity gradient without a distinctive surface layer, but they cannot occur with a high-velocity near-surface layer. See Figure E-3 and Sheriff and Geldart (1995, 52–53). Named for A.E.H.
Are Love waves destructive?
They move the ground from side to side in a horizontal plane but at right angles to the direction of propagation. Love waves are particularly damaging to the foundations of structures because of the horizontal ground motion they generate. Love waves can also cause horizontal shearing of the ground.
How are Love waves formed?
Love waves are a type of seismic wave that can be defined as dispersive surface waves with horizontal motion, perpendicular to the direction of wave propagation. They are formed when shear or S waves interact with the earth’s surface or with shallow structures.
Do we feel S waves?
“It feels more abrupt, but it attenuates very quickly, so if you are far away you often won’t feel the P wave.” The second waves to arrive are called “S” (secondary) waves, and while these high-frequency waves are slower they are also larger, so they produce a much stronger jolt.
What are the types of Love waves?
Love waves are a major type of surface wave having a horizontal motion that is shear or transverse to the direction of propagation. The velocity of propagation of any body wave in any homogeneous, isotropic material is determined by the elastic moduli and densities of the material through which it passes.
What are Love waves quizlet?
Love Wave. This is a type of surface wave which is a type of seismic wave. They move straight along the crust and move rocks to the left and right.
What are the two meanings of wave?
1 : a moving ridge on the surface of water. 2 : a waving motion a wave of the hand. 3 : something that swells and dies away A wave of anger came over her. 4 : a rolling movement passing along a surface or through the air waves of grain. 5 : a curving shape or series of curving shapes hair with waves.
