UNDERWATER BACKSCATTERING STRENGTHS OF ARCTIC PACK ICE

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...

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Bibliographic Details
Main Author: Milne,A. R.
Other Authors: PACIFIC NAVAL LAB ESQUIMALT (BRITISH COLUMBIA)
Format: Text
Language:English
Published: 1964
Subjects:
(*UNDERWATER SOUND
SCATTERING)
(*ICE
ARCTIC OCEAN)
MEASUREMENT
REFLECTION
AUDIO FREQUENCY
EXTREMELY LOW FREQUENCY
Arctic
Arctic Ocean
Canada
Sea ice
Online Access:http://www.dtic.mil/docs/citations/AD0611680
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0611680
Description
Summary: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) Pub. in Acoustical Society of America. Journal (U.S.) v36 n8 p1551-6 Aug 1964 (copies not available to DDC or Clearinghouse customers).

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