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Timothy F. Duda (M’05–SM’09) received the B.A. degree in physics from Pomona College, Claremont, CA, in 1979 and the Ph.D. degree in oceanography from the Scripps Institution
of Oceanography, University of California, San Diego, in 1986. He worked at the University of California, Santa Cruz, from 1986 to 1991. He has been a Scientist at the Woods Hole Oceano-
graphic Institution, Woods Hole, MA, since 1991. His three pri- mary fields of study are ocean acoustic propagation, ocean internal gravity waves, and ocean mixing processes. His research into these has included theoretical and observational physical process studies, development of new measurement tools, and computational acoustic modeling. Dr. Duda is a member of the IEEE Oceanic Engineering Society. He is also a member of the American Meteorological Soci- ety, the American Geophysical Union, and the Acoustical Society of America (Fellow).
References
Badiey M., Lynch J. F., Tang X., Apel J., and the SWARM group (2002). “Azimuthal and temporal dependence of sound propagation due to shallow water internal waves.” IEEE J. Oceanic Eng’g. 27(1), pp. 117-129.
Carey, W. M., (1998). “The determination of signal coherence length based on signal coherence and gain measurements in deep and shallow water.” J. Acoust. Soc. Am. 104, 831-837.
Carey W. M., Cable P., Siegmann W., Lynch J. F, and Rozenfeld I. (2002). “Measurement of sound transmission and signal gain in the Strait of Korea.” IEEE J. Oceanic Eng., 27(4), pp. 841-852.
Colosi, J.A. (2013). “On horizontal coherence estimates from path integral theory for sound propagation through random ocean sound-speed perturbations”, J. Acoust. Soc. Am., 134 (4), pp3116- 3118.
John A. Colosi received his B.A. degree in Physics from the Uni- versity of California, San Diego in 1988, and a PhD in Physics from the University of California, Santa Cruz in 1993. He is presently a Professor of Oceanography at the
Naval Postgraduate School (NPS) in Monterey California. Before his arrival at NPS in 2005 he was a tenured Associate scientist at the Woods Hole Oceanographic Institution (WHOI) in the department of Applied Ocean Physics and Engineering (AOPE), and he was an active faculty member in the Massachusetts Institute of Technology (MIT)/WHOI Joint Program. He has authored/co-authored over 50 refereed publications on the topic of ocean acoustics and physical oceanography. He was the recipient of the 2001 A.B Wood Medal, and the 2011 Medwin Prize in Acoustical Oceanography, and he was recently elected Fellow of the Acoustical Society of America. His scientific interests are in wave propagation through random media, acoustical remote sensing, and internal waves and tides.
Duda, T. F., (2006). “Temporal and cross-range coherence of sound traveling through shallow-water nonlinear internal wave packets,” J. Acoust. Soc. Am. 119, 3717-3725.
Duda, T. F., Collis J. M., Lin Y. T., Newhall A. E., Lynch J. F., and DeFerrari H. A. (2012). “Horizontal coherence of low-frequency fixed-path sound in a continental shelf region with internal-wave activity,” J. Acoust. Soc. Am, 131, 1782-1797.
Finette, S., and Oba, R. (2003). “Horizontal array beam-forming in an azimuthally anisotropic internal wave field,” J. Acoust. Soc. Am. 114, 131–144.
Flatte S., (Editor) (1979). “Sound transmission through a fluctuat- ing ocean”, Cambridge University Press, New York, New York.
Katznelson B. G., Petnikov V., and Lynch J. F. (2012). “Fundamen- tals of shallow water acoustics”, ONR series book, Springer Verlag, 520 pages.
18 | Acoustics Today | Winter 2014