ANALYTICAL STUDY OF CERTAIN ASPECTS OF UNDERWATER SHOCKWAVE PROPAGATION: SLOPING BOTTOM, ICECAP, SEDIMENTARY BOTTOM

Various problems concerning the effects of the boundaries of the ocean on the propagation of pressure waves in the ocean are considered. The propagation of a transient pressure wave in a wedge shaped region of fluid is treated. This is the model chosen to describe the situation in which an underwate...

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Bibliographic Details
Main Authors: Feit, David, Thompson, Jr, William
Other Authors: CAMBRIDGE ACOUSTICAL ASSOCIATES INC MA
Format: Text
Language:English
Published: 1966
Subjects:
Physical and Dynamic Oceanography
Explosions
*SHOCK WAVES
*UNDERWATER EXPLOSIONS
BOUNDARY LAYER
ICE
OCEAN BOTTOM TOPOGRAPHY
PRESSURE
PROPAGATION
SCATTERING
SEDIMENTATION
Ice cap
Polar Ice Cap
Online Access:http://www.dtic.mil/docs/citations/AD0644197
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0644197
Description
Summary:Various problems concerning the effects of the boundaries of the ocean on the propagation of pressure waves in the ocean are considered. The propagation of a transient pressure wave in a wedge shaped region of fluid is treated. This is the model chosen to describe the situation in which an underwater explosion takes place in a coastal region which is characterized by a strongly sloping bottom. In an attempt to study the effects of the polar ice cap on the propagation of a pressure wave, the reflection of a plane wave onto a rough boundary separating a fluid half space and a thick fluid layer of differing sound speed and density is considered. These results are currently being used to construct the response to a transient pressure pulse and to generate numerical results for conditions representative of underwater explosions. The final section presents numerical values of the reflection coefficient as a function of grazing angle for the case of a plane wave incident on a porous elastic bottom.

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