IceShelf 2002 Bottom Loss Analysis

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Authors
  1. Schillinger, D.J.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Gale Force Scientific Consulting Ltd, Dartmouth NS (CAN)
Abstract
A short-range, shallow-water bottom loss experiment was conducted in the South Lincoln Sea, under an irregular rough ice canopy. The experiment was carried out using broadband signals generated by imploding light bulbs at depths of 15, 30 and 50m and distances ranging from 15 to 150 m from a vertical hydrophone array. Previous experiments in the vicinity of this site have provided limited seabed information. Preliminary modeling of the acoustic propagation at this location using a ray-based model is used to determine the bottom loss as a function of grazing angle for frequencies between 10 and 1000 Hz. This report will review the measurements, and discuss the challenges associated with the modeling, in view of the experimental uncertainties associated with this complicated environment.

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Keywords
Bottom loss;Arctic;Iceshelf 2002;Jolliffe Bay;Grazing angle
Report Number
DRDC-ATLANTIC-CR-2003-240 — Contractor Report
Date of publication
01 Jan 2005
Number of Pages
46
DSTKIM No
CA027235
CANDIS No
525273
Format(s):
CD ROM

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