The Strength of Correlations Between Geotechnical Variables and Acoustic Classifications

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Authors
  1. Preston, J.M.
  2. Collins, W.T.
  3. Mosher, D.C.
  4. Poeckert, R.H.
  5. Kuwahara, R.H.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Seabed grain size, shear strength, bearing strength, and porosity were measured at 15 sites, all in bays and harbours around southern Vancouver Island. Sounder echoes at 38 and 200 kHz from the same sites were classified using the QTC VIEW (TRADEMARK) technology. This approach uses a feature set generated from the direct echoes by a set of algorithms and then reduced by multivariate analysis, with similar acoustic responses put into the same class. Canonical correlation analysis was used to uncover correlations between two data sets: the frequency of occurrence of each acoustic class, and the four geotechnical variables. Bearing strength was found to be the major contributor to the first geotechnical canonical variable, which correlated with classes from the 38-kHz echoes with a coefficient of 0.94.
Keywords
Buried mines;Sediment properties;Soil analyzer;Seafloor;Military oceanography;Seabed;Seabed probes
Report Number
DREA-SL-1999-081 — Paper
Date of publication
01 Sep 1999
Number of Pages
8
Reprinted from
IEEE Proceedings of Oceans '99, p 1123-1128
DSTKIM No
CA001214
CANDIS No
513112
Format(s):
Hardcopy;Document Image stored on Optical Disk

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