Accession Number : AD0736155

Title :   Project CANUS: Sound Propagation and Reverberation Measurement in Hudson Bay.

Descriptive Note : Research rept.,

Corporate Author : NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s) : Browning,David G.

Report Date : 01 DEC 1971

Pagination or Media Count : 31

Abstract : An experiment was conducted in Hudson Bay during August 1970 to obtain propagation and reverberation data below 12kHz. A listening hydeophone was suspended from an Amphibian stationed 90 miles east of Cape Churchill. Explosive charges were dropped from an aircraft along a 270-mile track to Coats Island. Additional charges were detonated close to hydrophone to obtain the reverberation data. BT information from along the propagation track indicated a sound channel with an axial depth of 80 feet over a flat hard bottom at an average depth of 425 feet. Propagation loss curves were obtained for 1/3-octave bands from 300 to 5000 Hz and reverberation levels for 1-octave bands from 200 to 12,800 Hz. (Author)

Descriptors :   (*UNDERWATER SOUND, HUDSON BAY), (*HUDSON BAY, ACOUSTIC PROPERTIES), REVERBERATION, EXPLOSIVE CHARGES, DETONATIONS, SHALLOW WATER, AUDIO FREQUENCY

Subject Categories : Physical and Dynamic Oceanography
      Non-electrical Energy Conversion

Distribution Statement : APPROVED FOR PUBLIC RELEASE