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back-azimuth

The angle measured from north to the direction from which the energy arrives at a given station. Is used to determine the longitudinal and transverse directions for an incoming ray at a prescribed station. The longitudinal component lies along the great circle, and the transverse component is perpendicular to the great circle.

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  • Part of Speech: noun
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  • Industry/Domain: Earth science
  • Category: Seismology
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