Accession Number : AD0611680

Title :   UNDERWATER BACKSCATTERING STRENGTHS OF ARCTIC PACK ICE,

Corporate Author : PACIFIC NAVAL LAB ESQUIMALT (BRITISH COLUMBIA)

Personal Author(s) : Milne,A. R.

Report Date : 04 MAY 1964

Pagination or Media Count : 7

Abstract : The backscattering strengths under Arctic sea ice for octave bands between 12 cps and 4 kc/sec were measured, using explosive sound sources. The measurements were made from a camp established in April 1962 on broken and pressure-packed one-year ice over the Canada Deep. For grazing angles between 5 degrees and 14 degrees, results show a dependence of scattering strengths both on grazing angle and on frequency. The dependence on grazing angle is small in frequencies above the 0.5- to 1-kc/sec band and large in the 12- to 25-cps band. (Author)

Descriptors :   (*UNDERWATER SOUND, SCATTERING), (*ICE, ARCTIC OCEAN), MEASUREMENT, REFLECTION, AUDIO FREQUENCY, EXTREMELY LOW FREQUENCY

Distribution Statement : APPROVED FOR PUBLIC RELEASE