Seismic Waves Characteristics
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Questions and Answers

What type of motion is exhibited by Love waves?

  • Circular motion
  • Vertical motion
  • Horizontal motion (correct)
  • Spiral motion
  • Which wave velocity lies between the S-wave velocity in the soil layer and the half-space?

  • P-wave velocity
  • Love wave velocity (correct)
  • Rayleigh wave velocity
  • Surface wave velocity
  • What term is used to describe the dependence of Love wave velocity on wavelength?

  • Reflection
  • Interference
  • Refraction
  • Dispersion (correct)
  • Why are Love waves considered dispersive?

    <p>Because they can only propagate in a layered medium</p> Signup and view all the answers

    How are Love waves generated according to A.E.H. Love (1911)?

    <p>By trapping S-waves in a soil layer</p> Signup and view all the answers

    What kind of waves are responsible for generating Love waves?

    <p>Surface waves</p> Signup and view all the answers

    What is the direction of mass particle motion for a P-wave?

    <p>In the direction of wave propagation</p> Signup and view all the answers

    Why are S-waves sometimes referred to as secondary waves?

    <p>Because they move slower than P-waves</p> Signup and view all the answers

    Which of the following surface waves are subdivided into Rayleigh and Love waves?

    <p>Surface waves</p> Signup and view all the answers

    How do S-waves affect the instantaneous volume of materials?

    <p>No effect on volume</p> Signup and view all the answers

    Which wave type is responsible for causing a momentary shape change in materials?

    <p>S-wave</p> Signup and view all the answers

    What type of waves do not propagate through fluids?

    <p>S-waves</p> Signup and view all the answers

    What type of motion describes the particle motion in a homogeneous half-space?

    <p>Retrograde ellipse in the vertical plane</p> Signup and view all the answers

    In a layered and dissipative medium, the path of particle motion is always:

    <p>Elliptical</p> Signup and view all the answers

    What type of wave is dependent on Poisson's ratio and its velocity is approximately 0.9194 times that of S-wave in a Poisson's solid?

    <p>Rayleigh wave</p> Signup and view all the answers

    Which scientist explained the mechanism of generation of Love waves in a horizontal soil layer overlying a half-space?

    <p>A.E.H. Love</p> Signup and view all the answers

    When is the SH-wave trapped in the soil layer according to A.E.H. Love's explanation?

    <p>When the angle of reflection at the base of soil layer is more than the critical angle</p> Signup and view all the answers

    What type of interference generates horizontally traveling Love waves according to A.E.H. Love's explanation?

    <p>Constructive interference of reflected SH-waves from the top and bottom of the soil layer</p> Signup and view all the answers

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