Welcome to the ...  Ocean Acoustics Library





Normal Modes
Parabolic Equation
Wavenumber integration




Related sites
The Student Page
Sound and Marine Mammals

Featured new additions/links

New release of the Acoustics Toolbox including KRAKEN and BELLHOP. (28 January 2015).

3MB (Marine Mammal Motion and Behavior) Software Package (New 11 April 2014)
(Dorian Houser, National Marine Mammal Foundation)

Acoustic Channel Simulator  (New 16 January 2014)
(P. Qarabaqi and M. Stojanovic, Northeastern University)
(see also http://millitsa.coe.neu.edu/?q=projects)
Uses arrival time information from BELLHOP or a simplified multipath calculator for generating large-scale channel realizations.

HWT_3D_mm --- Huygens Wavefront Tracing in 3D for moving media (New 17 September 2013)
(Nikolay Zabotin, Oleg A. Godin, and Liudmila Ye. Zabotina, National Oceanic and Atmospheric Administration)

RAMSurf: RAM recoded in C and vectorized for speed (Thomas Folegot/Quiet-Oceans) (new September 3, 2013)

TRACEO Beam Tracing code [see also the SiPLAB site] Tracing code (New 20 July 2012)
(O. Rodríguez and Emanuel Ey, Univ. Algarve, Portugal)

NORDA PE Workshop Proceedings (1981)
(James A. Davis, DeWayne White, and Ray Cavanaugh)[12 Mbytes]

Aquatic Acoustic Archive (A3)

PocketBook of Underwater Acoustics (3rd Ed.)
compiled by Christine Erbe
(JASCO Applied Sciences; contact Roberto Racca with corrections or questions)

The Ocean Acoustics library contains acoustic modeling software and data. It is supported by the U.S. Office of Naval Research (Ocean Acoustics Program) as a means of publishing software of general use to the international ocean acoustics community.

Global Shipping Noise

Shipping noise is an important part of the ocean 'environment', and presents interesting modeling problems. The upper figure shows shipping-noise source-level densities at 200 Hz. The shipping lanes are clearly visible. The colors represent dB re: 1 microPa2 /Hz @ 1m/m2.  These source level maps can then be convolved with the propagation characteristics of the ocean channel to show the resulting 'illumination' or ensonification of the ocean. The level is displayed as a Noise Spectral Density with a scale in dB referenced to 1 microPascal ^2/Hz. (Also available as a KMZ file.)  Caution: these are preliminary (DRAFT) results presented to illustrate the process. The source level is derived from shipping data provided by Carrie Kappel/NCEAS.  (This page highlights current research projects in ocean acoustics. Suggestions welcome.) Previous FrontPages.

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Sound in the Sea