Basin-Scale Tidal Measurements Using Acoustic Tomography

Abstract

Travel-times of acoustic signals were measured between a bottom-mounted source near Oahu and four bottom-mounted receivers located near Washington, Oregon, and California in 1988 and 1989. This paper discusses the observed tidal signals. At three out of four receivers, observed travel times at M2 and S2 periods agree with predictions from barotropic tide models to within + or - 30 in phase and a factor of 1.6 in amplitude. The discrepancy at the fourth receiver can be removed by including predicted effects of phase-locked baroclinic tides generated by seamounts. Theses.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1990
Accession Number
ADA227016

Entities

People

  • Robert H. Headrick

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Tomography
  • Data Acquisition
  • Data Analysis
  • Energy
  • Engineering
  • Equations
  • Frequency
  • Internal Waves
  • Measurement
  • Observation
  • Ocean Tides
  • Oceans
  • Signal Processing
  • Tidal Currents
  • Travel Time
  • Two Dimensional
  • United States

Fields of Study

  • Physics

Readers

  • Oceanography.
  • Radio communications and signal processing.
  • Seismology