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North Pacific Acoustic Laboratory.

Peter F Worcester1, Robert C Spindel

  • 1Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0225, USA. pworcester@ucsd.edu

The Journal of the Acoustical Society of America
|April 7, 2005
PubMed
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Researchers conducted long-range acoustic propagation experiments in the North Pacific Ocean. These studies analyzed low-frequency, broadband sound transmission and its stability in varying ocean environments.

Area of Science:

  • Oceanography
  • Acoustics
  • Signal Processing

Background:

  • Long-range acoustic propagation is crucial for underwater communication and sensing.
  • Environmental variability significantly impacts acoustic signal stability and coherence.
  • Previous studies have explored acoustic propagation, but gaps remain in understanding broadband signals.

Purpose of the Study:

  • To investigate the physics of low-frequency, wide-bandwidth acoustic propagation.
  • To assess the influence of environmental variability on signal stability and coherence.
  • To summarize key findings from 15 years of acoustic propagation experiments.

Main Methods:

  • Conducted long-range acoustic propagation experiments over 15 years.
  • Utilized low-frequency, wide-bandwidth transmitters.

Related Experiment Videos

  • Employed horizontal and vertical line array receivers, including a 2D array (1400m vertical, 3600m horizontal aperture).

    • Main Results:

    • Detailed measurements of acoustic signal behavior over long distances.
    • Analysis of how oceanographic conditions affect signal characteristics.
    • Data contributing to a better understanding of underwater acoustic physics.

    Conclusions:

    • The experiments provide valuable data on low-frequency, broadband acoustic propagation.
    • Environmental factors demonstrably influence signal stability and coherence.
    • This research enhances the understanding of underwater acoustic phenomena.