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What is shadow zone?

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What is shadow zone?
  • 1 answers

Yogita Ingle 3 years, 10 months ago

  • The shadow zone is the zone of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves.
  • The shadow zone results from P waves being refracted by the liquid core and S waves being stopped completely by the liquid core.
  • A zone between 105° and 145° from the epicenter was recognized as the shadow zone for both the wave types.
  • The entire zone beyond 105° does not receive S-waves.
  • The shadow zone of S-wave is larger than that of the P-waves.
  • The shadow zone of P-waves appears as a band around the earth between 105° and 145° away from the epicenter.
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