Sound Propagation Into the Shadow Zone in a Temperature-Stratified Atmosphere Above a Plane Boundary Metadata

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Title

  • Main Title Sound Propagation Into the Shadow Zone in a Temperature-Stratified Atmosphere Above a Plane Boundary
  • Series Title NACA Technical Notes

Creator

  • Author: Pridmore-Brown, David C.
    Creator Type: Personal
  • Author: Ingard, Uno
    Creator Type: Personal

Contributor

  • Originator: Massachusetts Institute of Technology
    Contributor Type: Organization
  • Originator: United States. National Advisory Committee for Aeronautics.
    Contributor Type: Organization

Date

  • Creation: 1955-10

Language

  • English

Description

  • Content Description: Note presenting an investigation of the sound field about a point source over a plane boundary in the presence of a vertical temperature gradient, which represents one phase of a general program of research in atmospheric acoustics. In this report, geometrical ray acoustics is employed to derive the ray paths and intensity distribution about a source located in a uniformly stratified medium. Results indicate that the existence of a temperature gradient, which leads only to a simple refraction of sound rays, can be in conjunction with the ground boundary result in the formation of a "shadow zone".
  • Physical Description: 57 p. : ill.

Subject

  • Keyword: temperature gradients
  • Keyword: atmospheric acoustics
  • Keyword: sound characteristics

Collection

  • Name: National Advisory Committee for Aeronautics Collection
    Code: NACA
  • Name: Technical Report Archive and Image Library
    Code: TRAIL

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Rights

  • Rights Access: public
  • Rights License: pd
  • Rights Statement: No Copyright, Unclassified, Unlimited, Publicly available

Resource Type

  • Report

Format

  • Text

Identifier

  • Accession or Local Control No: 93R13644
  • URL: http://hdl.handle.net/2060/19930084354
  • Report No.: NACA-TN-3494
  • Center for AeroSpace Information Number: 19930084354
  • Archival Resource Key: ark:/67531/metadc57873
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