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Browsing by Keyword "Underwater acoustics"

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Browsing by Keyword "Underwater acoustics"

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  • Newhall, Arthur E.; Duda, Timothy F.; von der Heydt, Keith; Irish, James D.; Kemp, John N.; Lerner, Steven A.; Liberatore, Stephen P.; Lin, Ying-Tsong; Lynch, James F.; Maffei, Andrew R.; Morozov, Andrey K.; Shmelev, Alexey A.; Sellers, Cynthia J.; Witzell, Warren E. (Woods Hole Oceanographic Institution, 2007-05)
    This document describes data, sensors, and other useful information pertaining to the moorings that were deployed from the R/V Knorr from July 24th to August 4th, 2006 in support of the SW06 experiment. The SW06 experiment ...
  • Martin Traykovski, Linda V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-02)
    Work on the forward problem in zooplankton bioacoustics has resulted in the identification of three categories of acoustic scatterers: elastic-shelled (e.g. pteropods), fluid-like (e.g. euphausiids), and gas-bearing (e.g. ...
  • Dahl, Peter H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-05)
    The problem of a low-frequency acoustic plane wave incident upon a free surface coupled to a semi-infinite elastic plate surface, is solved using an analytic approach based on the Wiener-Hopf method. By low-frequency it ...
  • Polcari, John J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1986-05)
    The dual issues of modal decomposition for tonal sound fields and the temporal coherence of the modal amplitudes are investigated for the case of the central Arctic sound channel at very low frequencies (15-80 Hz). A ...
  • Hunt, Mary M.; Marquet, William M.; Moller, Donald A.; Peal, Kenneth R.; Smith, Woollcott K.; Spindel, Robert C. (Woods Hole Oceanographic Institution, 1974-12)
    This report describes a system for underwater acoustic navigation developed, and in use, at the Woods Hole Oceanographic Institution. It includes a brief discussion of the electronic components, operation, mathematical ...
  • Reeder, D. Benjamin (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2002-06)
    This thesis investigates the complexities of acoustic scattering by finite bodies in general and by fish in particular through the development of an advanced acoustic scattering model and detailed laboratory acoustic ...
  • Chester, David B. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-09)
    Variability of the Florida Current has been monitored via acoustic tomography. A reciprocal tomography experiment was conducted in the eastern half of the Florida Straits during mid October and November, 1983. A triangular ...
  • Frye, Daniel E. (Woods Hole Oceanographic Institution, 1996-04)
    The Advanced Engineering Laboratory of the Woods Hole Oceanographic Institution is a development laboratory within the Applied Ocean Physics and Engineering Department. Its function is the development of oceanographic ...
  • Martinez, David Richard (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979-06)
    For a spherical acoustic wave incident on a horizontally stratified ocean bottom, the reflected pressure field and the plane-wave reflection coefficient are related through a two-dimensional spatial-wavenumber Fourier ...
  • Felizardo, Francis C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-06)
    There is a growing consensus that the sound generated by breaking waves is responsible for much of the ambient noise level in the ocean. While numerous field measurements have shown a strong correlation between the ambient ...
  • Partan, James W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2000-09)
    A channel characterization experiment for the underwater acoustic communication channel was carried out at Scripps Pier in May 1999. The experiment investigated acoustic transmission in very shallow water and breaking ...
  • Sperry, Brian J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-06)
    During July and August of 1996, a large acoustics/physical oceanography experiment was fielded in the Mid-Atlantic Bight, south of Nantucket Island, MA. Known as the Shelfbreak Front PRIMER Experiment, the study combined ...
  • Stephen, Ralph A.; Bolmer, S. Thompson; Udovydchenkov, Ilya A.; Dzieciuch, Matthew A.; Worcester, Peter F.; Andrew, Rex K.; Mercer, James A.; Colosi, John A.; Howe, Bruce M. (Woods Hole Oceanographic Institution, 2012-12)
    This report gives an overview of the analysis that was done on Deep Seafloor Arrivals since they were initially presented in Stephen et al (2009). All of the NPAL04/LOAPEX (North Pacific Acoustic Laboratory, 2004/ Long ...
  • Headrick, Robert H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-06)
    As part of the Shallow Water Acoustics in a Random Medium (SWARM) experiment [1], a sixteen element WHOI vertical line array (WVLA) was moored in 70 meters of water off the New Jersey coast. This array was sampled at ...
  • Dudko, Yuriy V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-02)
    In this thesis the analysis of natural ice events is carried out based on direct measurements of ice-borne seismo-acoustic waves generated by ice fracturing processes. A major reason for studying this phenomenon is that ...
  • Headrick, Robert H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-09)
    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 ...
  • Richards, Randall G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-09)
    This paper develops a beam pattern design procedure for general multidimensional irregular sonar arrays that incorporates the not well understood effects of array geometry into the design process. The procedure is ...
  • Nadakuditi, Rajesh Rao (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2002-02)
    One of the major problems in wireless communications is compensating for the time-varying intersymbol interference (ISI) due to multipath. Underwater acoustic communications is one such type of wireless communications ...
  • Preisig, James C.; Duda, Timothy F. (IEEE, 1997-04)
    Three techniques are used to investigate mode coupling as acoustic energy passes through continental-shelf internal solitary waves (ISW's). Results from all techniques agree. The waves considered here are single downward ...
  • Tracey, Brian H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
    An ultra-short baseline acoustic navigation system has been developed which is capable of determining bearing to a sound source with an error of less than 1° in typical operational conditions. The system has a demonstrated ...

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