Accession Number:

ADC002497

Title:

Church Anchor Explosive Sources (SUS) Propagation Measurements

Descriptive Note:

Technical rept.

Corporate Author:

TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s):

Report Date:

1974-12-01

Pagination or Media Count:

273.0

Abstract:

The received energy of sound waves generated by underwater explosive sources SUS was recorded during August and September 1973 as part of the CHURCH ANCHOR Exercise conducted in the central Northeastern Pacific Ocean. The analyzed and digital magnetic tape recordings of these data have been analyzed by digital hardwaresoftware processing techniques including automatic shot detection, shot length estimation, and fast Fourier transform FFT spectrum analysis. Results of these analyses are plotted as propagation loss versus range, for ranges up to 1200 nm for frequencies of 25, 50 and 158 Hz, with limited data for 100 and 250 Hz for source depths of 18 m and 91 m and for receiver depths near the sound channel axis, near the critical depth, and near the ocean bottom. Sound propagation characteristics were examined as a function of source-to-receiver range, source depth, receiver depth, frequency, and bathymetry.

Subject Categories:

  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE