COMPRESSIONAL WAVE MEASUREMENTS IN THE SURFICIAL SEDIMENTS OF SABLE ISLAND BANK

Authors
  1. McKay, A.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Nova Scotia Research Foundation, Dartmouth NS (CAN)
Abstract
Field observations from multichannel seismic equipment towed near the seabed have been analyzed to determine the velocity of propagation of compressional waves in the sediments of Sable Island Bank. The method used was that of measuring differences in arrival time of head-waves at successive receivers of a 12-channel array (the "refraction" method of geophysics). In all, 56 stations, each comprising from 8 to 11 seismograms, have been analyzed by means of commercially available software. The results indicate consistency of the method with standard errors for the velocities found ranging from 3% to less than 1%. The principal limitation of the precision obtained appears to arise from the uncertainties as to the vertical location of individual receivers within the towed array.
Report Number
DREA-CR-85-404 — Contract Report (Final)
Date of publication
15 Jul 1985
Number of Pages
153
DSTKIM No
85-02727
CANDIS No
47521
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: